167207b96SArnd Bergmann /* 267207b96SArnd Bergmann * SPU file system -- file contents 367207b96SArnd Bergmann * 467207b96SArnd Bergmann * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 567207b96SArnd Bergmann * 667207b96SArnd Bergmann * Author: Arnd Bergmann <arndb@de.ibm.com> 767207b96SArnd Bergmann * 867207b96SArnd Bergmann * This program is free software; you can redistribute it and/or modify 967207b96SArnd Bergmann * it under the terms of the GNU General Public License as published by 1067207b96SArnd Bergmann * the Free Software Foundation; either version 2, or (at your option) 1167207b96SArnd Bergmann * any later version. 1267207b96SArnd Bergmann * 1367207b96SArnd Bergmann * This program is distributed in the hope that it will be useful, 1467207b96SArnd Bergmann * but WITHOUT ANY WARRANTY; without even the implied warranty of 1567207b96SArnd Bergmann * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1667207b96SArnd Bergmann * GNU General Public License for more details. 1767207b96SArnd Bergmann * 1867207b96SArnd Bergmann * You should have received a copy of the GNU General Public License 1967207b96SArnd Bergmann * along with this program; if not, write to the Free Software 2067207b96SArnd Bergmann * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 2167207b96SArnd Bergmann */ 2267207b96SArnd Bergmann 23a33a7d73SArnd Bergmann #undef DEBUG 24a33a7d73SArnd Bergmann 2567207b96SArnd Bergmann #include <linux/fs.h> 2667207b96SArnd Bergmann #include <linux/ioctl.h> 2767207b96SArnd Bergmann #include <linux/module.h> 28d88cfffaSArnd Bergmann #include <linux/pagemap.h> 2967207b96SArnd Bergmann #include <linux/poll.h> 305110459fSArnd Bergmann #include <linux/ptrace.h> 31cbe709c1SBenjamin Herrenschmidt #include <linux/seq_file.h> 3267207b96SArnd Bergmann 3367207b96SArnd Bergmann #include <asm/io.h> 3467207b96SArnd Bergmann #include <asm/semaphore.h> 3567207b96SArnd Bergmann #include <asm/spu.h> 36b9e3bd77SDwayne Grant McConnell #include <asm/spu_info.h> 3767207b96SArnd Bergmann #include <asm/uaccess.h> 3867207b96SArnd Bergmann 3967207b96SArnd Bergmann #include "spufs.h" 4067207b96SArnd Bergmann 4127d5bf2aSBenjamin Herrenschmidt #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) 4227d5bf2aSBenjamin Herrenschmidt 43cbe709c1SBenjamin Herrenschmidt 4467207b96SArnd Bergmann static int 4567207b96SArnd Bergmann spufs_mem_open(struct inode *inode, struct file *file) 4667207b96SArnd Bergmann { 4767207b96SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 486df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 4943c2bbd9SChristoph Hellwig 5047d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 516df10a82SMark Nutter file->private_data = ctx; 5243c2bbd9SChristoph Hellwig if (!i->i_openers++) 536df10a82SMark Nutter ctx->local_store = inode->i_mapping; 5447d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 5543c2bbd9SChristoph Hellwig return 0; 5643c2bbd9SChristoph Hellwig } 5743c2bbd9SChristoph Hellwig 5843c2bbd9SChristoph Hellwig static int 5943c2bbd9SChristoph Hellwig spufs_mem_release(struct inode *inode, struct file *file) 6043c2bbd9SChristoph Hellwig { 6143c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 6243c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 6343c2bbd9SChristoph Hellwig 6447d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 6543c2bbd9SChristoph Hellwig if (!--i->i_openers) 6643c2bbd9SChristoph Hellwig ctx->local_store = NULL; 6747d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 6867207b96SArnd Bergmann return 0; 6967207b96SArnd Bergmann } 7067207b96SArnd Bergmann 7167207b96SArnd Bergmann static ssize_t 72bf1ab978SDwayne Grant McConnell __spufs_mem_read(struct spu_context *ctx, char __user *buffer, 73bf1ab978SDwayne Grant McConnell size_t size, loff_t *pos) 74bf1ab978SDwayne Grant McConnell { 75bf1ab978SDwayne Grant McConnell char *local_store = ctx->ops->get_ls(ctx); 76bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, local_store, 77bf1ab978SDwayne Grant McConnell LS_SIZE); 78bf1ab978SDwayne Grant McConnell } 79bf1ab978SDwayne Grant McConnell 80bf1ab978SDwayne Grant McConnell static ssize_t 8167207b96SArnd Bergmann spufs_mem_read(struct file *file, char __user *buffer, 8267207b96SArnd Bergmann size_t size, loff_t *pos) 8367207b96SArnd Bergmann { 84bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 85aa0ed2bdSArnd Bergmann ssize_t ret; 8667207b96SArnd Bergmann 878b3d6663SArnd Bergmann spu_acquire(ctx); 88bf1ab978SDwayne Grant McConnell ret = __spufs_mem_read(ctx, buffer, size, pos); 898b3d6663SArnd Bergmann spu_release(ctx); 9067207b96SArnd Bergmann return ret; 9167207b96SArnd Bergmann } 9267207b96SArnd Bergmann 9367207b96SArnd Bergmann static ssize_t 9467207b96SArnd Bergmann spufs_mem_write(struct file *file, const char __user *buffer, 95aa0ed2bdSArnd Bergmann size_t size, loff_t *ppos) 9667207b96SArnd Bergmann { 9767207b96SArnd Bergmann struct spu_context *ctx = file->private_data; 988b3d6663SArnd Bergmann char *local_store; 99aa0ed2bdSArnd Bergmann loff_t pos = *ppos; 1008b3d6663SArnd Bergmann int ret; 10167207b96SArnd Bergmann 102aa0ed2bdSArnd Bergmann if (pos < 0) 103aa0ed2bdSArnd Bergmann return -EINVAL; 104aa0ed2bdSArnd Bergmann if (pos > LS_SIZE) 10567207b96SArnd Bergmann return -EFBIG; 106aa0ed2bdSArnd Bergmann if (size > LS_SIZE - pos) 107aa0ed2bdSArnd Bergmann size = LS_SIZE - pos; 1088b3d6663SArnd Bergmann 1098b3d6663SArnd Bergmann spu_acquire(ctx); 1108b3d6663SArnd Bergmann local_store = ctx->ops->get_ls(ctx); 111aa0ed2bdSArnd Bergmann ret = copy_from_user(local_store + pos, buffer, size); 1128b3d6663SArnd Bergmann spu_release(ctx); 113aa0ed2bdSArnd Bergmann 114aa0ed2bdSArnd Bergmann if (ret) 115aa0ed2bdSArnd Bergmann return -EFAULT; 116aa0ed2bdSArnd Bergmann *ppos = pos + size; 117aa0ed2bdSArnd Bergmann return size; 11867207b96SArnd Bergmann } 11967207b96SArnd Bergmann 12078bde53eSBenjamin Herrenschmidt static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma, 12178bde53eSBenjamin Herrenschmidt unsigned long address) 1228b3d6663SArnd Bergmann { 1238b3d6663SArnd Bergmann struct spu_context *ctx = vma->vm_file->private_data; 124f1fa74f4SBenjamin Herrenschmidt unsigned long pfn, offset, addr0 = address; 125f1fa74f4SBenjamin Herrenschmidt #ifdef CONFIG_SPU_FS_64K_LS 126f1fa74f4SBenjamin Herrenschmidt struct spu_state *csa = &ctx->csa; 127f1fa74f4SBenjamin Herrenschmidt int psize; 12878bde53eSBenjamin Herrenschmidt 129f1fa74f4SBenjamin Herrenschmidt /* Check what page size we are using */ 130f1fa74f4SBenjamin Herrenschmidt psize = get_slice_psize(vma->vm_mm, address); 1318b3d6663SArnd Bergmann 132f1fa74f4SBenjamin Herrenschmidt /* Some sanity checking */ 133f1fa74f4SBenjamin Herrenschmidt BUG_ON(csa->use_big_pages != (psize == MMU_PAGE_64K)); 134f1fa74f4SBenjamin Herrenschmidt 135f1fa74f4SBenjamin Herrenschmidt /* Wow, 64K, cool, we need to align the address though */ 136f1fa74f4SBenjamin Herrenschmidt if (csa->use_big_pages) { 137f1fa74f4SBenjamin Herrenschmidt BUG_ON(vma->vm_start & 0xffff); 138f1fa74f4SBenjamin Herrenschmidt address &= ~0xfffful; 139f1fa74f4SBenjamin Herrenschmidt } 140f1fa74f4SBenjamin Herrenschmidt #endif /* CONFIG_SPU_FS_64K_LS */ 141f1fa74f4SBenjamin Herrenschmidt 142f1fa74f4SBenjamin Herrenschmidt offset = (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT); 143128b8546SMasato Noguchi if (offset >= LS_SIZE) 144128b8546SMasato Noguchi return NOPFN_SIGBUS; 145128b8546SMasato Noguchi 146f1fa74f4SBenjamin Herrenschmidt pr_debug("spufs_mem_mmap_nopfn address=0x%lx -> 0x%lx, offset=0x%lx\n", 147f1fa74f4SBenjamin Herrenschmidt addr0, address, offset); 148f1fa74f4SBenjamin Herrenschmidt 1498b3d6663SArnd Bergmann spu_acquire(ctx); 1508b3d6663SArnd Bergmann 151ac91cb8dSArnd Bergmann if (ctx->state == SPU_STATE_SAVED) { 152ac91cb8dSArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 153932f535dSArnd Bergmann & ~_PAGE_NO_CACHE); 15478bde53eSBenjamin Herrenschmidt pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); 155ac91cb8dSArnd Bergmann } else { 156ac91cb8dSArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 157932f535dSArnd Bergmann | _PAGE_NO_CACHE); 15878bde53eSBenjamin Herrenschmidt pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; 159ac91cb8dSArnd Bergmann } 16078bde53eSBenjamin Herrenschmidt vm_insert_pfn(vma, address, pfn); 16178bde53eSBenjamin Herrenschmidt 1628b3d6663SArnd Bergmann spu_release(ctx); 1638b3d6663SArnd Bergmann 16478bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 1658b3d6663SArnd Bergmann } 1668b3d6663SArnd Bergmann 16778bde53eSBenjamin Herrenschmidt 1688b3d6663SArnd Bergmann static struct vm_operations_struct spufs_mem_mmap_vmops = { 16978bde53eSBenjamin Herrenschmidt .nopfn = spufs_mem_mmap_nopfn, 1708b3d6663SArnd Bergmann }; 1718b3d6663SArnd Bergmann 172f1fa74f4SBenjamin Herrenschmidt static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) 17367207b96SArnd Bergmann { 174f1fa74f4SBenjamin Herrenschmidt #ifdef CONFIG_SPU_FS_64K_LS 175f1fa74f4SBenjamin Herrenschmidt struct spu_context *ctx = file->private_data; 176f1fa74f4SBenjamin Herrenschmidt struct spu_state *csa = &ctx->csa; 177f1fa74f4SBenjamin Herrenschmidt 178f1fa74f4SBenjamin Herrenschmidt /* Sanity check VMA alignment */ 179f1fa74f4SBenjamin Herrenschmidt if (csa->use_big_pages) { 180f1fa74f4SBenjamin Herrenschmidt pr_debug("spufs_mem_mmap 64K, start=0x%lx, end=0x%lx," 181f1fa74f4SBenjamin Herrenschmidt " pgoff=0x%lx\n", vma->vm_start, vma->vm_end, 182f1fa74f4SBenjamin Herrenschmidt vma->vm_pgoff); 183f1fa74f4SBenjamin Herrenschmidt if (vma->vm_start & 0xffff) 184f1fa74f4SBenjamin Herrenschmidt return -EINVAL; 185f1fa74f4SBenjamin Herrenschmidt if (vma->vm_pgoff & 0xf) 186f1fa74f4SBenjamin Herrenschmidt return -EINVAL; 187f1fa74f4SBenjamin Herrenschmidt } 188f1fa74f4SBenjamin Herrenschmidt #endif /* CONFIG_SPU_FS_64K_LS */ 189f1fa74f4SBenjamin Herrenschmidt 1908b3d6663SArnd Bergmann if (!(vma->vm_flags & VM_SHARED)) 1918b3d6663SArnd Bergmann return -EINVAL; 19267207b96SArnd Bergmann 19378bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 19467207b96SArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 19567207b96SArnd Bergmann | _PAGE_NO_CACHE); 1968b3d6663SArnd Bergmann 1978b3d6663SArnd Bergmann vma->vm_ops = &spufs_mem_mmap_vmops; 19867207b96SArnd Bergmann return 0; 19967207b96SArnd Bergmann } 20067207b96SArnd Bergmann 201f1fa74f4SBenjamin Herrenschmidt #ifdef CONFIG_SPU_FS_64K_LS 2021238819aSSebastian Siewior static unsigned long spufs_get_unmapped_area(struct file *file, 2031238819aSSebastian Siewior unsigned long addr, unsigned long len, unsigned long pgoff, 204f1fa74f4SBenjamin Herrenschmidt unsigned long flags) 205f1fa74f4SBenjamin Herrenschmidt { 206f1fa74f4SBenjamin Herrenschmidt struct spu_context *ctx = file->private_data; 207f1fa74f4SBenjamin Herrenschmidt struct spu_state *csa = &ctx->csa; 208f1fa74f4SBenjamin Herrenschmidt 209f1fa74f4SBenjamin Herrenschmidt /* If not using big pages, fallback to normal MM g_u_a */ 210f1fa74f4SBenjamin Herrenschmidt if (!csa->use_big_pages) 211f1fa74f4SBenjamin Herrenschmidt return current->mm->get_unmapped_area(file, addr, len, 212f1fa74f4SBenjamin Herrenschmidt pgoff, flags); 213f1fa74f4SBenjamin Herrenschmidt 214f1fa74f4SBenjamin Herrenschmidt /* Else, try to obtain a 64K pages slice */ 215f1fa74f4SBenjamin Herrenschmidt return slice_get_unmapped_area(addr, len, flags, 216f1fa74f4SBenjamin Herrenschmidt MMU_PAGE_64K, 1, 0); 217f1fa74f4SBenjamin Herrenschmidt } 218f1fa74f4SBenjamin Herrenschmidt #endif /* CONFIG_SPU_FS_64K_LS */ 219f1fa74f4SBenjamin Herrenschmidt 2205dfe4c96SArjan van de Ven static const struct file_operations spufs_mem_fops = { 22167207b96SArnd Bergmann .open = spufs_mem_open, 222ce92987bSChristoph Hellwig .release = spufs_mem_release, 22367207b96SArnd Bergmann .read = spufs_mem_read, 22467207b96SArnd Bergmann .write = spufs_mem_write, 2258b3d6663SArnd Bergmann .llseek = generic_file_llseek, 22667207b96SArnd Bergmann .mmap = spufs_mem_mmap, 227f1fa74f4SBenjamin Herrenschmidt #ifdef CONFIG_SPU_FS_64K_LS 228f1fa74f4SBenjamin Herrenschmidt .get_unmapped_area = spufs_get_unmapped_area, 229f1fa74f4SBenjamin Herrenschmidt #endif 2308b3d6663SArnd Bergmann }; 2318b3d6663SArnd Bergmann 23278bde53eSBenjamin Herrenschmidt static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma, 2336df10a82SMark Nutter unsigned long address, 23478bde53eSBenjamin Herrenschmidt unsigned long ps_offs, 23527d5bf2aSBenjamin Herrenschmidt unsigned long ps_size) 2366df10a82SMark Nutter { 2376df10a82SMark Nutter struct spu_context *ctx = vma->vm_file->private_data; 23878bde53eSBenjamin Herrenschmidt unsigned long area, offset = address - vma->vm_start; 2396df10a82SMark Nutter int ret; 2406df10a82SMark Nutter 2416df10a82SMark Nutter offset += vma->vm_pgoff << PAGE_SHIFT; 24227d5bf2aSBenjamin Herrenschmidt if (offset >= ps_size) 24378bde53eSBenjamin Herrenschmidt return NOPFN_SIGBUS; 2446df10a82SMark Nutter 24578bde53eSBenjamin Herrenschmidt /* error here usually means a signal.. we might want to test 24678bde53eSBenjamin Herrenschmidt * the error code more precisely though 24778bde53eSBenjamin Herrenschmidt */ 24826bec673SChristoph Hellwig ret = spu_acquire_runnable(ctx, 0); 2496df10a82SMark Nutter if (ret) 25078bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 2516df10a82SMark Nutter 2526df10a82SMark Nutter area = ctx->spu->problem_phys + ps_offs; 25378bde53eSBenjamin Herrenschmidt vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT); 2546df10a82SMark Nutter spu_release(ctx); 2556df10a82SMark Nutter 25678bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 2576df10a82SMark Nutter } 2586df10a82SMark Nutter 25927d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 26078bde53eSBenjamin Herrenschmidt static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma, 26178bde53eSBenjamin Herrenschmidt unsigned long address) 2626df10a82SMark Nutter { 26378bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x4000, 0x1000); 2646df10a82SMark Nutter } 2656df10a82SMark Nutter 2666df10a82SMark Nutter static struct vm_operations_struct spufs_cntl_mmap_vmops = { 26778bde53eSBenjamin Herrenschmidt .nopfn = spufs_cntl_mmap_nopfn, 2686df10a82SMark Nutter }; 2696df10a82SMark Nutter 2706df10a82SMark Nutter /* 2716df10a82SMark Nutter * mmap support for problem state control area [0x4000 - 0x4fff]. 2726df10a82SMark Nutter */ 2736df10a82SMark Nutter static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) 2746df10a82SMark Nutter { 2756df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 2766df10a82SMark Nutter return -EINVAL; 2776df10a82SMark Nutter 27878bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 2796df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 28023cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 2816df10a82SMark Nutter 2826df10a82SMark Nutter vma->vm_ops = &spufs_cntl_mmap_vmops; 2836df10a82SMark Nutter return 0; 2846df10a82SMark Nutter } 28527d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 28627d5bf2aSBenjamin Herrenschmidt #define spufs_cntl_mmap NULL 28727d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 2886df10a82SMark Nutter 289e1dbff2bSArnd Bergmann static u64 spufs_cntl_get(void *data) 290e1dbff2bSArnd Bergmann { 291e1dbff2bSArnd Bergmann struct spu_context *ctx = data; 292e1dbff2bSArnd Bergmann u64 val; 293e1dbff2bSArnd Bergmann 294e1dbff2bSArnd Bergmann spu_acquire(ctx); 295e1dbff2bSArnd Bergmann val = ctx->ops->status_read(ctx); 296e1dbff2bSArnd Bergmann spu_release(ctx); 297e1dbff2bSArnd Bergmann 298e1dbff2bSArnd Bergmann return val; 299e1dbff2bSArnd Bergmann } 300e1dbff2bSArnd Bergmann 301e1dbff2bSArnd Bergmann static void spufs_cntl_set(void *data, u64 val) 302e1dbff2bSArnd Bergmann { 303e1dbff2bSArnd Bergmann struct spu_context *ctx = data; 304e1dbff2bSArnd Bergmann 305e1dbff2bSArnd Bergmann spu_acquire(ctx); 306e1dbff2bSArnd Bergmann ctx->ops->runcntl_write(ctx, val); 307e1dbff2bSArnd Bergmann spu_release(ctx); 308e1dbff2bSArnd Bergmann } 309e1dbff2bSArnd Bergmann 3106df10a82SMark Nutter static int spufs_cntl_open(struct inode *inode, struct file *file) 3116df10a82SMark Nutter { 3126df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 3136df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 3146df10a82SMark Nutter 31547d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 3166df10a82SMark Nutter file->private_data = ctx; 31743c2bbd9SChristoph Hellwig if (!i->i_openers++) 3186df10a82SMark Nutter ctx->cntl = inode->i_mapping; 31947d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 320e1dbff2bSArnd Bergmann return simple_attr_open(inode, file, spufs_cntl_get, 321e1dbff2bSArnd Bergmann spufs_cntl_set, "0x%08lx"); 3226df10a82SMark Nutter } 3236df10a82SMark Nutter 32443c2bbd9SChristoph Hellwig static int 32543c2bbd9SChristoph Hellwig spufs_cntl_release(struct inode *inode, struct file *file) 32643c2bbd9SChristoph Hellwig { 32743c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 32843c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 32943c2bbd9SChristoph Hellwig 33043c2bbd9SChristoph Hellwig simple_attr_close(inode, file); 33143c2bbd9SChristoph Hellwig 33247d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 33343c2bbd9SChristoph Hellwig if (!--i->i_openers) 33443c2bbd9SChristoph Hellwig ctx->cntl = NULL; 33547d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 33643c2bbd9SChristoph Hellwig return 0; 33743c2bbd9SChristoph Hellwig } 33843c2bbd9SChristoph Hellwig 3395dfe4c96SArjan van de Ven static const struct file_operations spufs_cntl_fops = { 3406df10a82SMark Nutter .open = spufs_cntl_open, 34143c2bbd9SChristoph Hellwig .release = spufs_cntl_release, 342e1dbff2bSArnd Bergmann .read = simple_attr_read, 343e1dbff2bSArnd Bergmann .write = simple_attr_write, 3446df10a82SMark Nutter .mmap = spufs_cntl_mmap, 3456df10a82SMark Nutter }; 3466df10a82SMark Nutter 3478b3d6663SArnd Bergmann static int 3488b3d6663SArnd Bergmann spufs_regs_open(struct inode *inode, struct file *file) 3498b3d6663SArnd Bergmann { 3508b3d6663SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 3518b3d6663SArnd Bergmann file->private_data = i->i_ctx; 3528b3d6663SArnd Bergmann return 0; 3538b3d6663SArnd Bergmann } 3548b3d6663SArnd Bergmann 3558b3d6663SArnd Bergmann static ssize_t 356bf1ab978SDwayne Grant McConnell __spufs_regs_read(struct spu_context *ctx, char __user *buffer, 357bf1ab978SDwayne Grant McConnell size_t size, loff_t *pos) 358bf1ab978SDwayne Grant McConnell { 359bf1ab978SDwayne Grant McConnell struct spu_lscsa *lscsa = ctx->csa.lscsa; 360bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, 361bf1ab978SDwayne Grant McConnell lscsa->gprs, sizeof lscsa->gprs); 362bf1ab978SDwayne Grant McConnell } 363bf1ab978SDwayne Grant McConnell 364bf1ab978SDwayne Grant McConnell static ssize_t 3658b3d6663SArnd Bergmann spufs_regs_read(struct file *file, char __user *buffer, 3668b3d6663SArnd Bergmann size_t size, loff_t *pos) 3678b3d6663SArnd Bergmann { 3688b3d6663SArnd Bergmann int ret; 369bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 3708b3d6663SArnd Bergmann 3718b3d6663SArnd Bergmann spu_acquire_saved(ctx); 372bf1ab978SDwayne Grant McConnell ret = __spufs_regs_read(ctx, buffer, size, pos); 37327b1ea09SChristoph Hellwig spu_release_saved(ctx); 3748b3d6663SArnd Bergmann return ret; 3758b3d6663SArnd Bergmann } 3768b3d6663SArnd Bergmann 3778b3d6663SArnd Bergmann static ssize_t 3788b3d6663SArnd Bergmann spufs_regs_write(struct file *file, const char __user *buffer, 3798b3d6663SArnd Bergmann size_t size, loff_t *pos) 3808b3d6663SArnd Bergmann { 3818b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 3828b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 3838b3d6663SArnd Bergmann int ret; 3848b3d6663SArnd Bergmann 3858b3d6663SArnd Bergmann size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); 3868b3d6663SArnd Bergmann if (size <= 0) 3878b3d6663SArnd Bergmann return -EFBIG; 3888b3d6663SArnd Bergmann *pos += size; 3898b3d6663SArnd Bergmann 3908b3d6663SArnd Bergmann spu_acquire_saved(ctx); 3918b3d6663SArnd Bergmann 3928b3d6663SArnd Bergmann ret = copy_from_user(lscsa->gprs + *pos - size, 3938b3d6663SArnd Bergmann buffer, size) ? -EFAULT : size; 3948b3d6663SArnd Bergmann 39527b1ea09SChristoph Hellwig spu_release_saved(ctx); 3968b3d6663SArnd Bergmann return ret; 3978b3d6663SArnd Bergmann } 3988b3d6663SArnd Bergmann 3995dfe4c96SArjan van de Ven static const struct file_operations spufs_regs_fops = { 4008b3d6663SArnd Bergmann .open = spufs_regs_open, 4018b3d6663SArnd Bergmann .read = spufs_regs_read, 4028b3d6663SArnd Bergmann .write = spufs_regs_write, 4038b3d6663SArnd Bergmann .llseek = generic_file_llseek, 4048b3d6663SArnd Bergmann }; 4058b3d6663SArnd Bergmann 4068b3d6663SArnd Bergmann static ssize_t 407bf1ab978SDwayne Grant McConnell __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, 408bf1ab978SDwayne Grant McConnell size_t size, loff_t * pos) 409bf1ab978SDwayne Grant McConnell { 410bf1ab978SDwayne Grant McConnell struct spu_lscsa *lscsa = ctx->csa.lscsa; 411bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, 412bf1ab978SDwayne Grant McConnell &lscsa->fpcr, sizeof(lscsa->fpcr)); 413bf1ab978SDwayne Grant McConnell } 414bf1ab978SDwayne Grant McConnell 415bf1ab978SDwayne Grant McConnell static ssize_t 4168b3d6663SArnd Bergmann spufs_fpcr_read(struct file *file, char __user * buffer, 4178b3d6663SArnd Bergmann size_t size, loff_t * pos) 4188b3d6663SArnd Bergmann { 4198b3d6663SArnd Bergmann int ret; 420bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 4218b3d6663SArnd Bergmann 4228b3d6663SArnd Bergmann spu_acquire_saved(ctx); 423bf1ab978SDwayne Grant McConnell ret = __spufs_fpcr_read(ctx, buffer, size, pos); 42427b1ea09SChristoph Hellwig spu_release_saved(ctx); 4258b3d6663SArnd Bergmann return ret; 4268b3d6663SArnd Bergmann } 4278b3d6663SArnd Bergmann 4288b3d6663SArnd Bergmann static ssize_t 4298b3d6663SArnd Bergmann spufs_fpcr_write(struct file *file, const char __user * buffer, 4308b3d6663SArnd Bergmann size_t size, loff_t * pos) 4318b3d6663SArnd Bergmann { 4328b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 4338b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 4348b3d6663SArnd Bergmann int ret; 4358b3d6663SArnd Bergmann 4368b3d6663SArnd Bergmann size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); 4378b3d6663SArnd Bergmann if (size <= 0) 4388b3d6663SArnd Bergmann return -EFBIG; 4398b3d6663SArnd Bergmann *pos += size; 4408b3d6663SArnd Bergmann 4418b3d6663SArnd Bergmann spu_acquire_saved(ctx); 4428b3d6663SArnd Bergmann 4438b3d6663SArnd Bergmann ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, 4448b3d6663SArnd Bergmann buffer, size) ? -EFAULT : size; 4458b3d6663SArnd Bergmann 44627b1ea09SChristoph Hellwig spu_release_saved(ctx); 4478b3d6663SArnd Bergmann return ret; 4488b3d6663SArnd Bergmann } 4498b3d6663SArnd Bergmann 4505dfe4c96SArjan van de Ven static const struct file_operations spufs_fpcr_fops = { 4518b3d6663SArnd Bergmann .open = spufs_regs_open, 4528b3d6663SArnd Bergmann .read = spufs_fpcr_read, 4538b3d6663SArnd Bergmann .write = spufs_fpcr_write, 45467207b96SArnd Bergmann .llseek = generic_file_llseek, 45567207b96SArnd Bergmann }; 45667207b96SArnd Bergmann 45767207b96SArnd Bergmann /* generic open function for all pipe-like files */ 45867207b96SArnd Bergmann static int spufs_pipe_open(struct inode *inode, struct file *file) 45967207b96SArnd Bergmann { 46067207b96SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 46167207b96SArnd Bergmann file->private_data = i->i_ctx; 46267207b96SArnd Bergmann 46367207b96SArnd Bergmann return nonseekable_open(inode, file); 46467207b96SArnd Bergmann } 46567207b96SArnd Bergmann 466cdcc89bbSArnd Bergmann /* 467cdcc89bbSArnd Bergmann * Read as many bytes from the mailbox as possible, until 468cdcc89bbSArnd Bergmann * one of the conditions becomes true: 469cdcc89bbSArnd Bergmann * 470cdcc89bbSArnd Bergmann * - no more data available in the mailbox 471cdcc89bbSArnd Bergmann * - end of the user provided buffer 472cdcc89bbSArnd Bergmann * - end of the mapped area 473cdcc89bbSArnd Bergmann */ 47467207b96SArnd Bergmann static ssize_t spufs_mbox_read(struct file *file, char __user *buf, 47567207b96SArnd Bergmann size_t len, loff_t *pos) 47667207b96SArnd Bergmann { 4778b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 478cdcc89bbSArnd Bergmann u32 mbox_data, __user *udata; 479cdcc89bbSArnd Bergmann ssize_t count; 48067207b96SArnd Bergmann 48167207b96SArnd Bergmann if (len < 4) 48267207b96SArnd Bergmann return -EINVAL; 48367207b96SArnd Bergmann 484cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_WRITE, buf, len)) 48567207b96SArnd Bergmann return -EFAULT; 48667207b96SArnd Bergmann 487cdcc89bbSArnd Bergmann udata = (void __user *)buf; 488cdcc89bbSArnd Bergmann 489cdcc89bbSArnd Bergmann spu_acquire(ctx); 490274cef5eSArnd Bergmann for (count = 0; (count + 4) <= len; count += 4, udata++) { 491cdcc89bbSArnd Bergmann int ret; 492cdcc89bbSArnd Bergmann ret = ctx->ops->mbox_read(ctx, &mbox_data); 493cdcc89bbSArnd Bergmann if (ret == 0) 494cdcc89bbSArnd Bergmann break; 495cdcc89bbSArnd Bergmann 496cdcc89bbSArnd Bergmann /* 497cdcc89bbSArnd Bergmann * at the end of the mapped area, we can fault 498cdcc89bbSArnd Bergmann * but still need to return the data we have 499cdcc89bbSArnd Bergmann * read successfully so far. 500cdcc89bbSArnd Bergmann */ 501cdcc89bbSArnd Bergmann ret = __put_user(mbox_data, udata); 502cdcc89bbSArnd Bergmann if (ret) { 503cdcc89bbSArnd Bergmann if (!count) 504cdcc89bbSArnd Bergmann count = -EFAULT; 505cdcc89bbSArnd Bergmann break; 506cdcc89bbSArnd Bergmann } 507cdcc89bbSArnd Bergmann } 508cdcc89bbSArnd Bergmann spu_release(ctx); 509cdcc89bbSArnd Bergmann 510cdcc89bbSArnd Bergmann if (!count) 511cdcc89bbSArnd Bergmann count = -EAGAIN; 512cdcc89bbSArnd Bergmann 513cdcc89bbSArnd Bergmann return count; 51467207b96SArnd Bergmann } 51567207b96SArnd Bergmann 5165dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_fops = { 51767207b96SArnd Bergmann .open = spufs_pipe_open, 51867207b96SArnd Bergmann .read = spufs_mbox_read, 51967207b96SArnd Bergmann }; 52067207b96SArnd Bergmann 52167207b96SArnd Bergmann static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, 52267207b96SArnd Bergmann size_t len, loff_t *pos) 52367207b96SArnd Bergmann { 5248b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 52567207b96SArnd Bergmann u32 mbox_stat; 52667207b96SArnd Bergmann 52767207b96SArnd Bergmann if (len < 4) 52867207b96SArnd Bergmann return -EINVAL; 52967207b96SArnd Bergmann 5308b3d6663SArnd Bergmann spu_acquire(ctx); 5318b3d6663SArnd Bergmann 5328b3d6663SArnd Bergmann mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; 5338b3d6663SArnd Bergmann 5348b3d6663SArnd Bergmann spu_release(ctx); 53567207b96SArnd Bergmann 53667207b96SArnd Bergmann if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) 53767207b96SArnd Bergmann return -EFAULT; 53867207b96SArnd Bergmann 53967207b96SArnd Bergmann return 4; 54067207b96SArnd Bergmann } 54167207b96SArnd Bergmann 5425dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_stat_fops = { 54367207b96SArnd Bergmann .open = spufs_pipe_open, 54467207b96SArnd Bergmann .read = spufs_mbox_stat_read, 54567207b96SArnd Bergmann }; 54667207b96SArnd Bergmann 54767207b96SArnd Bergmann /* low-level ibox access function */ 5488b3d6663SArnd Bergmann size_t spu_ibox_read(struct spu_context *ctx, u32 *data) 54967207b96SArnd Bergmann { 5508b3d6663SArnd Bergmann return ctx->ops->ibox_read(ctx, data); 55167207b96SArnd Bergmann } 55267207b96SArnd Bergmann 55367207b96SArnd Bergmann static int spufs_ibox_fasync(int fd, struct file *file, int on) 55467207b96SArnd Bergmann { 5558b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 5568b3d6663SArnd Bergmann 5578b3d6663SArnd Bergmann return fasync_helper(fd, file, on, &ctx->ibox_fasync); 5588b3d6663SArnd Bergmann } 5598b3d6663SArnd Bergmann 5608b3d6663SArnd Bergmann /* interrupt-level ibox callback function. */ 5618b3d6663SArnd Bergmann void spufs_ibox_callback(struct spu *spu) 5628b3d6663SArnd Bergmann { 5638b3d6663SArnd Bergmann struct spu_context *ctx = spu->ctx; 5648b3d6663SArnd Bergmann 5658b3d6663SArnd Bergmann wake_up_all(&ctx->ibox_wq); 5668b3d6663SArnd Bergmann kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); 56767207b96SArnd Bergmann } 56867207b96SArnd Bergmann 569cdcc89bbSArnd Bergmann /* 570cdcc89bbSArnd Bergmann * Read as many bytes from the interrupt mailbox as possible, until 571cdcc89bbSArnd Bergmann * one of the conditions becomes true: 572cdcc89bbSArnd Bergmann * 573cdcc89bbSArnd Bergmann * - no more data available in the mailbox 574cdcc89bbSArnd Bergmann * - end of the user provided buffer 575cdcc89bbSArnd Bergmann * - end of the mapped area 576cdcc89bbSArnd Bergmann * 577cdcc89bbSArnd Bergmann * If the file is opened without O_NONBLOCK, we wait here until 578cdcc89bbSArnd Bergmann * any data is available, but return when we have been able to 579cdcc89bbSArnd Bergmann * read something. 580cdcc89bbSArnd Bergmann */ 58167207b96SArnd Bergmann static ssize_t spufs_ibox_read(struct file *file, char __user *buf, 58267207b96SArnd Bergmann size_t len, loff_t *pos) 58367207b96SArnd Bergmann { 5848b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 585cdcc89bbSArnd Bergmann u32 ibox_data, __user *udata; 586cdcc89bbSArnd Bergmann ssize_t count; 58767207b96SArnd Bergmann 58867207b96SArnd Bergmann if (len < 4) 58967207b96SArnd Bergmann return -EINVAL; 59067207b96SArnd Bergmann 591cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_WRITE, buf, len)) 592cdcc89bbSArnd Bergmann return -EFAULT; 593cdcc89bbSArnd Bergmann 594cdcc89bbSArnd Bergmann udata = (void __user *)buf; 595cdcc89bbSArnd Bergmann 5968b3d6663SArnd Bergmann spu_acquire(ctx); 59767207b96SArnd Bergmann 598cdcc89bbSArnd Bergmann /* wait only for the first element */ 599cdcc89bbSArnd Bergmann count = 0; 60067207b96SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 6018b3d6663SArnd Bergmann if (!spu_ibox_read(ctx, &ibox_data)) 602cdcc89bbSArnd Bergmann count = -EAGAIN; 60367207b96SArnd Bergmann } else { 604cdcc89bbSArnd Bergmann count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); 605cdcc89bbSArnd Bergmann } 606cdcc89bbSArnd Bergmann if (count) 607cdcc89bbSArnd Bergmann goto out; 608cdcc89bbSArnd Bergmann 609cdcc89bbSArnd Bergmann /* if we can't write at all, return -EFAULT */ 610cdcc89bbSArnd Bergmann count = __put_user(ibox_data, udata); 611cdcc89bbSArnd Bergmann if (count) 612cdcc89bbSArnd Bergmann goto out; 613cdcc89bbSArnd Bergmann 614cdcc89bbSArnd Bergmann for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { 615cdcc89bbSArnd Bergmann int ret; 616cdcc89bbSArnd Bergmann ret = ctx->ops->ibox_read(ctx, &ibox_data); 617cdcc89bbSArnd Bergmann if (ret == 0) 618cdcc89bbSArnd Bergmann break; 619cdcc89bbSArnd Bergmann /* 620cdcc89bbSArnd Bergmann * at the end of the mapped area, we can fault 621cdcc89bbSArnd Bergmann * but still need to return the data we have 622cdcc89bbSArnd Bergmann * read successfully so far. 623cdcc89bbSArnd Bergmann */ 624cdcc89bbSArnd Bergmann ret = __put_user(ibox_data, udata); 625cdcc89bbSArnd Bergmann if (ret) 626cdcc89bbSArnd Bergmann break; 62767207b96SArnd Bergmann } 62867207b96SArnd Bergmann 629cdcc89bbSArnd Bergmann out: 6308b3d6663SArnd Bergmann spu_release(ctx); 6318b3d6663SArnd Bergmann 632cdcc89bbSArnd Bergmann return count; 63367207b96SArnd Bergmann } 63467207b96SArnd Bergmann 63567207b96SArnd Bergmann static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) 63667207b96SArnd Bergmann { 6378b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 63867207b96SArnd Bergmann unsigned int mask; 63967207b96SArnd Bergmann 6408b3d6663SArnd Bergmann poll_wait(file, &ctx->ibox_wq, wait); 64167207b96SArnd Bergmann 6423a843d7cSArnd Bergmann spu_acquire(ctx); 6433a843d7cSArnd Bergmann mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); 6443a843d7cSArnd Bergmann spu_release(ctx); 64567207b96SArnd Bergmann 64667207b96SArnd Bergmann return mask; 64767207b96SArnd Bergmann } 64867207b96SArnd Bergmann 6495dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_fops = { 65067207b96SArnd Bergmann .open = spufs_pipe_open, 65167207b96SArnd Bergmann .read = spufs_ibox_read, 65267207b96SArnd Bergmann .poll = spufs_ibox_poll, 65367207b96SArnd Bergmann .fasync = spufs_ibox_fasync, 65467207b96SArnd Bergmann }; 65567207b96SArnd Bergmann 65667207b96SArnd Bergmann static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, 65767207b96SArnd Bergmann size_t len, loff_t *pos) 65867207b96SArnd Bergmann { 6598b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 66067207b96SArnd Bergmann u32 ibox_stat; 66167207b96SArnd Bergmann 66267207b96SArnd Bergmann if (len < 4) 66367207b96SArnd Bergmann return -EINVAL; 66467207b96SArnd Bergmann 6658b3d6663SArnd Bergmann spu_acquire(ctx); 6668b3d6663SArnd Bergmann ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; 6678b3d6663SArnd Bergmann spu_release(ctx); 66867207b96SArnd Bergmann 66967207b96SArnd Bergmann if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) 67067207b96SArnd Bergmann return -EFAULT; 67167207b96SArnd Bergmann 67267207b96SArnd Bergmann return 4; 67367207b96SArnd Bergmann } 67467207b96SArnd Bergmann 6755dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_stat_fops = { 67667207b96SArnd Bergmann .open = spufs_pipe_open, 67767207b96SArnd Bergmann .read = spufs_ibox_stat_read, 67867207b96SArnd Bergmann }; 67967207b96SArnd Bergmann 68067207b96SArnd Bergmann /* low-level mailbox write */ 6818b3d6663SArnd Bergmann size_t spu_wbox_write(struct spu_context *ctx, u32 data) 68267207b96SArnd Bergmann { 6838b3d6663SArnd Bergmann return ctx->ops->wbox_write(ctx, data); 68467207b96SArnd Bergmann } 68567207b96SArnd Bergmann 68667207b96SArnd Bergmann static int spufs_wbox_fasync(int fd, struct file *file, int on) 68767207b96SArnd Bergmann { 6888b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 6898b3d6663SArnd Bergmann int ret; 6908b3d6663SArnd Bergmann 6918b3d6663SArnd Bergmann ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); 6928b3d6663SArnd Bergmann 6938b3d6663SArnd Bergmann return ret; 6948b3d6663SArnd Bergmann } 6958b3d6663SArnd Bergmann 6968b3d6663SArnd Bergmann /* interrupt-level wbox callback function. */ 6978b3d6663SArnd Bergmann void spufs_wbox_callback(struct spu *spu) 6988b3d6663SArnd Bergmann { 6998b3d6663SArnd Bergmann struct spu_context *ctx = spu->ctx; 7008b3d6663SArnd Bergmann 7018b3d6663SArnd Bergmann wake_up_all(&ctx->wbox_wq); 7028b3d6663SArnd Bergmann kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); 70367207b96SArnd Bergmann } 70467207b96SArnd Bergmann 705cdcc89bbSArnd Bergmann /* 706cdcc89bbSArnd Bergmann * Write as many bytes to the interrupt mailbox as possible, until 707cdcc89bbSArnd Bergmann * one of the conditions becomes true: 708cdcc89bbSArnd Bergmann * 709cdcc89bbSArnd Bergmann * - the mailbox is full 710cdcc89bbSArnd Bergmann * - end of the user provided buffer 711cdcc89bbSArnd Bergmann * - end of the mapped area 712cdcc89bbSArnd Bergmann * 713cdcc89bbSArnd Bergmann * If the file is opened without O_NONBLOCK, we wait here until 714cdcc89bbSArnd Bergmann * space is availabyl, but return when we have been able to 715cdcc89bbSArnd Bergmann * write something. 716cdcc89bbSArnd Bergmann */ 71767207b96SArnd Bergmann static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, 71867207b96SArnd Bergmann size_t len, loff_t *pos) 71967207b96SArnd Bergmann { 7208b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 721cdcc89bbSArnd Bergmann u32 wbox_data, __user *udata; 722cdcc89bbSArnd Bergmann ssize_t count; 72367207b96SArnd Bergmann 72467207b96SArnd Bergmann if (len < 4) 72567207b96SArnd Bergmann return -EINVAL; 72667207b96SArnd Bergmann 727cdcc89bbSArnd Bergmann udata = (void __user *)buf; 728cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_READ, buf, len)) 729cdcc89bbSArnd Bergmann return -EFAULT; 730cdcc89bbSArnd Bergmann 731cdcc89bbSArnd Bergmann if (__get_user(wbox_data, udata)) 73267207b96SArnd Bergmann return -EFAULT; 73367207b96SArnd Bergmann 7348b3d6663SArnd Bergmann spu_acquire(ctx); 7358b3d6663SArnd Bergmann 736cdcc89bbSArnd Bergmann /* 737cdcc89bbSArnd Bergmann * make sure we can at least write one element, by waiting 738cdcc89bbSArnd Bergmann * in case of !O_NONBLOCK 739cdcc89bbSArnd Bergmann */ 740cdcc89bbSArnd Bergmann count = 0; 74167207b96SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 7428b3d6663SArnd Bergmann if (!spu_wbox_write(ctx, wbox_data)) 743cdcc89bbSArnd Bergmann count = -EAGAIN; 74467207b96SArnd Bergmann } else { 745cdcc89bbSArnd Bergmann count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); 74667207b96SArnd Bergmann } 74767207b96SArnd Bergmann 748cdcc89bbSArnd Bergmann if (count) 749cdcc89bbSArnd Bergmann goto out; 7508b3d6663SArnd Bergmann 751cdcc89bbSArnd Bergmann /* write aѕ much as possible */ 752cdcc89bbSArnd Bergmann for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { 753cdcc89bbSArnd Bergmann int ret; 754cdcc89bbSArnd Bergmann ret = __get_user(wbox_data, udata); 755cdcc89bbSArnd Bergmann if (ret) 756cdcc89bbSArnd Bergmann break; 757cdcc89bbSArnd Bergmann 758cdcc89bbSArnd Bergmann ret = spu_wbox_write(ctx, wbox_data); 759cdcc89bbSArnd Bergmann if (ret == 0) 760cdcc89bbSArnd Bergmann break; 761cdcc89bbSArnd Bergmann } 762cdcc89bbSArnd Bergmann 763cdcc89bbSArnd Bergmann out: 764cdcc89bbSArnd Bergmann spu_release(ctx); 765cdcc89bbSArnd Bergmann return count; 76667207b96SArnd Bergmann } 76767207b96SArnd Bergmann 76867207b96SArnd Bergmann static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) 76967207b96SArnd Bergmann { 7708b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 77167207b96SArnd Bergmann unsigned int mask; 77267207b96SArnd Bergmann 7738b3d6663SArnd Bergmann poll_wait(file, &ctx->wbox_wq, wait); 77467207b96SArnd Bergmann 7753a843d7cSArnd Bergmann spu_acquire(ctx); 7763a843d7cSArnd Bergmann mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); 7773a843d7cSArnd Bergmann spu_release(ctx); 77867207b96SArnd Bergmann 77967207b96SArnd Bergmann return mask; 78067207b96SArnd Bergmann } 78167207b96SArnd Bergmann 7825dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_fops = { 78367207b96SArnd Bergmann .open = spufs_pipe_open, 78467207b96SArnd Bergmann .write = spufs_wbox_write, 78567207b96SArnd Bergmann .poll = spufs_wbox_poll, 78667207b96SArnd Bergmann .fasync = spufs_wbox_fasync, 78767207b96SArnd Bergmann }; 78867207b96SArnd Bergmann 78967207b96SArnd Bergmann static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, 79067207b96SArnd Bergmann size_t len, loff_t *pos) 79167207b96SArnd Bergmann { 7928b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 79367207b96SArnd Bergmann u32 wbox_stat; 79467207b96SArnd Bergmann 79567207b96SArnd Bergmann if (len < 4) 79667207b96SArnd Bergmann return -EINVAL; 79767207b96SArnd Bergmann 7988b3d6663SArnd Bergmann spu_acquire(ctx); 7998b3d6663SArnd Bergmann wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; 8008b3d6663SArnd Bergmann spu_release(ctx); 80167207b96SArnd Bergmann 80267207b96SArnd Bergmann if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) 80367207b96SArnd Bergmann return -EFAULT; 80467207b96SArnd Bergmann 80567207b96SArnd Bergmann return 4; 80667207b96SArnd Bergmann } 80767207b96SArnd Bergmann 8085dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_stat_fops = { 80967207b96SArnd Bergmann .open = spufs_pipe_open, 81067207b96SArnd Bergmann .read = spufs_wbox_stat_read, 81167207b96SArnd Bergmann }; 81267207b96SArnd Bergmann 8136df10a82SMark Nutter static int spufs_signal1_open(struct inode *inode, struct file *file) 8146df10a82SMark Nutter { 8156df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 8166df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 81743c2bbd9SChristoph Hellwig 81847d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 8196df10a82SMark Nutter file->private_data = ctx; 82043c2bbd9SChristoph Hellwig if (!i->i_openers++) 8216df10a82SMark Nutter ctx->signal1 = inode->i_mapping; 82247d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 8236df10a82SMark Nutter return nonseekable_open(inode, file); 8246df10a82SMark Nutter } 8256df10a82SMark Nutter 82643c2bbd9SChristoph Hellwig static int 82743c2bbd9SChristoph Hellwig spufs_signal1_release(struct inode *inode, struct file *file) 82843c2bbd9SChristoph Hellwig { 82943c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 83043c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 83143c2bbd9SChristoph Hellwig 83247d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 83343c2bbd9SChristoph Hellwig if (!--i->i_openers) 83443c2bbd9SChristoph Hellwig ctx->signal1 = NULL; 83547d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 83643c2bbd9SChristoph Hellwig return 0; 83743c2bbd9SChristoph Hellwig } 83843c2bbd9SChristoph Hellwig 839bf1ab978SDwayne Grant McConnell static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, 84067207b96SArnd Bergmann size_t len, loff_t *pos) 84167207b96SArnd Bergmann { 84217f88cebSDwayne Grant McConnell int ret = 0; 84367207b96SArnd Bergmann u32 data; 84467207b96SArnd Bergmann 84567207b96SArnd Bergmann if (len < 4) 84667207b96SArnd Bergmann return -EINVAL; 84767207b96SArnd Bergmann 84817f88cebSDwayne Grant McConnell if (ctx->csa.spu_chnlcnt_RW[3]) { 84917f88cebSDwayne Grant McConnell data = ctx->csa.spu_chnldata_RW[3]; 85017f88cebSDwayne Grant McConnell ret = 4; 85117f88cebSDwayne Grant McConnell } 8528b3d6663SArnd Bergmann 85317f88cebSDwayne Grant McConnell if (!ret) 85417f88cebSDwayne Grant McConnell goto out; 85517f88cebSDwayne Grant McConnell 85667207b96SArnd Bergmann if (copy_to_user(buf, &data, 4)) 85767207b96SArnd Bergmann return -EFAULT; 85867207b96SArnd Bergmann 85917f88cebSDwayne Grant McConnell out: 86017f88cebSDwayne Grant McConnell return ret; 86167207b96SArnd Bergmann } 86267207b96SArnd Bergmann 863bf1ab978SDwayne Grant McConnell static ssize_t spufs_signal1_read(struct file *file, char __user *buf, 864bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 865bf1ab978SDwayne Grant McConnell { 866bf1ab978SDwayne Grant McConnell int ret; 867bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 868bf1ab978SDwayne Grant McConnell 869bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 870bf1ab978SDwayne Grant McConnell ret = __spufs_signal1_read(ctx, buf, len, pos); 87127b1ea09SChristoph Hellwig spu_release_saved(ctx); 872bf1ab978SDwayne Grant McConnell 873bf1ab978SDwayne Grant McConnell return ret; 874bf1ab978SDwayne Grant McConnell } 875bf1ab978SDwayne Grant McConnell 87667207b96SArnd Bergmann static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, 87767207b96SArnd Bergmann size_t len, loff_t *pos) 87867207b96SArnd Bergmann { 87967207b96SArnd Bergmann struct spu_context *ctx; 88067207b96SArnd Bergmann u32 data; 88167207b96SArnd Bergmann 88267207b96SArnd Bergmann ctx = file->private_data; 88367207b96SArnd Bergmann 88467207b96SArnd Bergmann if (len < 4) 88567207b96SArnd Bergmann return -EINVAL; 88667207b96SArnd Bergmann 88767207b96SArnd Bergmann if (copy_from_user(&data, buf, 4)) 88867207b96SArnd Bergmann return -EFAULT; 88967207b96SArnd Bergmann 8908b3d6663SArnd Bergmann spu_acquire(ctx); 8918b3d6663SArnd Bergmann ctx->ops->signal1_write(ctx, data); 8928b3d6663SArnd Bergmann spu_release(ctx); 89367207b96SArnd Bergmann 89467207b96SArnd Bergmann return 4; 89567207b96SArnd Bergmann } 89667207b96SArnd Bergmann 89778bde53eSBenjamin Herrenschmidt static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma, 89878bde53eSBenjamin Herrenschmidt unsigned long address) 8996df10a82SMark Nutter { 90027d5bf2aSBenjamin Herrenschmidt #if PAGE_SIZE == 0x1000 90178bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x14000, 0x1000); 90227d5bf2aSBenjamin Herrenschmidt #elif PAGE_SIZE == 0x10000 90327d5bf2aSBenjamin Herrenschmidt /* For 64k pages, both signal1 and signal2 can be used to mmap the whole 90427d5bf2aSBenjamin Herrenschmidt * signal 1 and 2 area 90527d5bf2aSBenjamin Herrenschmidt */ 90678bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); 90727d5bf2aSBenjamin Herrenschmidt #else 90827d5bf2aSBenjamin Herrenschmidt #error unsupported page size 90927d5bf2aSBenjamin Herrenschmidt #endif 9106df10a82SMark Nutter } 9116df10a82SMark Nutter 9126df10a82SMark Nutter static struct vm_operations_struct spufs_signal1_mmap_vmops = { 91378bde53eSBenjamin Herrenschmidt .nopfn = spufs_signal1_mmap_nopfn, 9146df10a82SMark Nutter }; 9156df10a82SMark Nutter 9166df10a82SMark Nutter static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) 9176df10a82SMark Nutter { 9186df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 9196df10a82SMark Nutter return -EINVAL; 9206df10a82SMark Nutter 92178bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 9226df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 92323cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 9246df10a82SMark Nutter 9256df10a82SMark Nutter vma->vm_ops = &spufs_signal1_mmap_vmops; 9266df10a82SMark Nutter return 0; 9276df10a82SMark Nutter } 9286df10a82SMark Nutter 9295dfe4c96SArjan van de Ven static const struct file_operations spufs_signal1_fops = { 9306df10a82SMark Nutter .open = spufs_signal1_open, 93143c2bbd9SChristoph Hellwig .release = spufs_signal1_release, 93267207b96SArnd Bergmann .read = spufs_signal1_read, 93367207b96SArnd Bergmann .write = spufs_signal1_write, 9346df10a82SMark Nutter .mmap = spufs_signal1_mmap, 93567207b96SArnd Bergmann }; 93667207b96SArnd Bergmann 937d054b36fSJeremy Kerr static const struct file_operations spufs_signal1_nosched_fops = { 938d054b36fSJeremy Kerr .open = spufs_signal1_open, 939d054b36fSJeremy Kerr .release = spufs_signal1_release, 940d054b36fSJeremy Kerr .write = spufs_signal1_write, 941d054b36fSJeremy Kerr .mmap = spufs_signal1_mmap, 942d054b36fSJeremy Kerr }; 943d054b36fSJeremy Kerr 9446df10a82SMark Nutter static int spufs_signal2_open(struct inode *inode, struct file *file) 9456df10a82SMark Nutter { 9466df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 9476df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 94843c2bbd9SChristoph Hellwig 94947d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 9506df10a82SMark Nutter file->private_data = ctx; 95143c2bbd9SChristoph Hellwig if (!i->i_openers++) 9526df10a82SMark Nutter ctx->signal2 = inode->i_mapping; 95347d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 9546df10a82SMark Nutter return nonseekable_open(inode, file); 9556df10a82SMark Nutter } 9566df10a82SMark Nutter 95743c2bbd9SChristoph Hellwig static int 95843c2bbd9SChristoph Hellwig spufs_signal2_release(struct inode *inode, struct file *file) 95943c2bbd9SChristoph Hellwig { 96043c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 96143c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 96243c2bbd9SChristoph Hellwig 96347d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 96443c2bbd9SChristoph Hellwig if (!--i->i_openers) 96543c2bbd9SChristoph Hellwig ctx->signal2 = NULL; 96647d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 96743c2bbd9SChristoph Hellwig return 0; 96843c2bbd9SChristoph Hellwig } 96943c2bbd9SChristoph Hellwig 970bf1ab978SDwayne Grant McConnell static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, 97167207b96SArnd Bergmann size_t len, loff_t *pos) 97267207b96SArnd Bergmann { 97317f88cebSDwayne Grant McConnell int ret = 0; 97467207b96SArnd Bergmann u32 data; 97567207b96SArnd Bergmann 97667207b96SArnd Bergmann if (len < 4) 97767207b96SArnd Bergmann return -EINVAL; 97867207b96SArnd Bergmann 97917f88cebSDwayne Grant McConnell if (ctx->csa.spu_chnlcnt_RW[4]) { 98017f88cebSDwayne Grant McConnell data = ctx->csa.spu_chnldata_RW[4]; 98117f88cebSDwayne Grant McConnell ret = 4; 98217f88cebSDwayne Grant McConnell } 9838b3d6663SArnd Bergmann 98417f88cebSDwayne Grant McConnell if (!ret) 98517f88cebSDwayne Grant McConnell goto out; 98617f88cebSDwayne Grant McConnell 98767207b96SArnd Bergmann if (copy_to_user(buf, &data, 4)) 98867207b96SArnd Bergmann return -EFAULT; 98967207b96SArnd Bergmann 99017f88cebSDwayne Grant McConnell out: 991bf1ab978SDwayne Grant McConnell return ret; 992bf1ab978SDwayne Grant McConnell } 993bf1ab978SDwayne Grant McConnell 994bf1ab978SDwayne Grant McConnell static ssize_t spufs_signal2_read(struct file *file, char __user *buf, 995bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 996bf1ab978SDwayne Grant McConnell { 997bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 998bf1ab978SDwayne Grant McConnell int ret; 999bf1ab978SDwayne Grant McConnell 1000bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1001bf1ab978SDwayne Grant McConnell ret = __spufs_signal2_read(ctx, buf, len, pos); 100227b1ea09SChristoph Hellwig spu_release_saved(ctx); 1003bf1ab978SDwayne Grant McConnell 1004bf1ab978SDwayne Grant McConnell return ret; 100567207b96SArnd Bergmann } 100667207b96SArnd Bergmann 100767207b96SArnd Bergmann static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, 100867207b96SArnd Bergmann size_t len, loff_t *pos) 100967207b96SArnd Bergmann { 101067207b96SArnd Bergmann struct spu_context *ctx; 101167207b96SArnd Bergmann u32 data; 101267207b96SArnd Bergmann 101367207b96SArnd Bergmann ctx = file->private_data; 101467207b96SArnd Bergmann 101567207b96SArnd Bergmann if (len < 4) 101667207b96SArnd Bergmann return -EINVAL; 101767207b96SArnd Bergmann 101867207b96SArnd Bergmann if (copy_from_user(&data, buf, 4)) 101967207b96SArnd Bergmann return -EFAULT; 102067207b96SArnd Bergmann 10218b3d6663SArnd Bergmann spu_acquire(ctx); 10228b3d6663SArnd Bergmann ctx->ops->signal2_write(ctx, data); 10238b3d6663SArnd Bergmann spu_release(ctx); 102467207b96SArnd Bergmann 102567207b96SArnd Bergmann return 4; 102667207b96SArnd Bergmann } 102767207b96SArnd Bergmann 102827d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 102978bde53eSBenjamin Herrenschmidt static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma, 103078bde53eSBenjamin Herrenschmidt unsigned long address) 10316df10a82SMark Nutter { 103227d5bf2aSBenjamin Herrenschmidt #if PAGE_SIZE == 0x1000 103378bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000); 103427d5bf2aSBenjamin Herrenschmidt #elif PAGE_SIZE == 0x10000 103527d5bf2aSBenjamin Herrenschmidt /* For 64k pages, both signal1 and signal2 can be used to mmap the whole 103627d5bf2aSBenjamin Herrenschmidt * signal 1 and 2 area 103727d5bf2aSBenjamin Herrenschmidt */ 103878bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); 103927d5bf2aSBenjamin Herrenschmidt #else 104027d5bf2aSBenjamin Herrenschmidt #error unsupported page size 104127d5bf2aSBenjamin Herrenschmidt #endif 10426df10a82SMark Nutter } 10436df10a82SMark Nutter 10446df10a82SMark Nutter static struct vm_operations_struct spufs_signal2_mmap_vmops = { 104578bde53eSBenjamin Herrenschmidt .nopfn = spufs_signal2_mmap_nopfn, 10466df10a82SMark Nutter }; 10476df10a82SMark Nutter 10486df10a82SMark Nutter static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) 10496df10a82SMark Nutter { 10506df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 10516df10a82SMark Nutter return -EINVAL; 10526df10a82SMark Nutter 105378bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 10546df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 105523cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 10566df10a82SMark Nutter 10576df10a82SMark Nutter vma->vm_ops = &spufs_signal2_mmap_vmops; 10586df10a82SMark Nutter return 0; 10596df10a82SMark Nutter } 106027d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 106127d5bf2aSBenjamin Herrenschmidt #define spufs_signal2_mmap NULL 106227d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 10636df10a82SMark Nutter 10645dfe4c96SArjan van de Ven static const struct file_operations spufs_signal2_fops = { 10656df10a82SMark Nutter .open = spufs_signal2_open, 106643c2bbd9SChristoph Hellwig .release = spufs_signal2_release, 106767207b96SArnd Bergmann .read = spufs_signal2_read, 106867207b96SArnd Bergmann .write = spufs_signal2_write, 10696df10a82SMark Nutter .mmap = spufs_signal2_mmap, 107067207b96SArnd Bergmann }; 107167207b96SArnd Bergmann 1072d054b36fSJeremy Kerr static const struct file_operations spufs_signal2_nosched_fops = { 1073d054b36fSJeremy Kerr .open = spufs_signal2_open, 1074d054b36fSJeremy Kerr .release = spufs_signal2_release, 1075d054b36fSJeremy Kerr .write = spufs_signal2_write, 1076d054b36fSJeremy Kerr .mmap = spufs_signal2_mmap, 1077d054b36fSJeremy Kerr }; 1078d054b36fSJeremy Kerr 1079104f0cc2SMichael Ellerman /* 1080104f0cc2SMichael Ellerman * This is a wrapper around DEFINE_SIMPLE_ATTRIBUTE which does the 1081104f0cc2SMichael Ellerman * work of acquiring (or not) the SPU context before calling through 1082104f0cc2SMichael Ellerman * to the actual get routine. The set routine is called directly. 1083104f0cc2SMichael Ellerman */ 1084104f0cc2SMichael Ellerman #define SPU_ATTR_NOACQUIRE 0 1085104f0cc2SMichael Ellerman #define SPU_ATTR_ACQUIRE 1 1086104f0cc2SMichael Ellerman #define SPU_ATTR_ACQUIRE_SAVED 2 1087104f0cc2SMichael Ellerman 1088104f0cc2SMichael Ellerman #define DEFINE_SPUFS_ATTRIBUTE(__name, __get, __set, __fmt, __acquire) \ 1089104f0cc2SMichael Ellerman static u64 __##__get(void *data) \ 1090104f0cc2SMichael Ellerman { \ 1091104f0cc2SMichael Ellerman struct spu_context *ctx = data; \ 1092104f0cc2SMichael Ellerman u64 ret; \ 1093104f0cc2SMichael Ellerman \ 1094104f0cc2SMichael Ellerman if (__acquire == SPU_ATTR_ACQUIRE) { \ 1095104f0cc2SMichael Ellerman spu_acquire(ctx); \ 1096104f0cc2SMichael Ellerman ret = __get(ctx); \ 1097104f0cc2SMichael Ellerman spu_release(ctx); \ 1098104f0cc2SMichael Ellerman } else if (__acquire == SPU_ATTR_ACQUIRE_SAVED) { \ 1099104f0cc2SMichael Ellerman spu_acquire_saved(ctx); \ 1100104f0cc2SMichael Ellerman ret = __get(ctx); \ 1101104f0cc2SMichael Ellerman spu_release_saved(ctx); \ 1102104f0cc2SMichael Ellerman } else \ 1103104f0cc2SMichael Ellerman ret = __get(ctx); \ 1104104f0cc2SMichael Ellerman \ 1105104f0cc2SMichael Ellerman return ret; \ 1106104f0cc2SMichael Ellerman } \ 1107104f0cc2SMichael Ellerman DEFINE_SIMPLE_ATTRIBUTE(__name, __##__get, __set, __fmt); 1108104f0cc2SMichael Ellerman 110967207b96SArnd Bergmann static void spufs_signal1_type_set(void *data, u64 val) 111067207b96SArnd Bergmann { 111167207b96SArnd Bergmann struct spu_context *ctx = data; 111267207b96SArnd Bergmann 11138b3d6663SArnd Bergmann spu_acquire(ctx); 11148b3d6663SArnd Bergmann ctx->ops->signal1_type_set(ctx, val); 11158b3d6663SArnd Bergmann spu_release(ctx); 111667207b96SArnd Bergmann } 111767207b96SArnd Bergmann 1118104f0cc2SMichael Ellerman static u64 spufs_signal1_type_get(struct spu_context *ctx) 1119bf1ab978SDwayne Grant McConnell { 1120bf1ab978SDwayne Grant McConnell return ctx->ops->signal1_type_get(ctx); 1121bf1ab978SDwayne Grant McConnell } 1122104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, 1123104f0cc2SMichael Ellerman spufs_signal1_type_set, "%llu", SPU_ATTR_ACQUIRE); 1124bf1ab978SDwayne Grant McConnell 112567207b96SArnd Bergmann 112667207b96SArnd Bergmann static void spufs_signal2_type_set(void *data, u64 val) 112767207b96SArnd Bergmann { 112867207b96SArnd Bergmann struct spu_context *ctx = data; 112967207b96SArnd Bergmann 11308b3d6663SArnd Bergmann spu_acquire(ctx); 11318b3d6663SArnd Bergmann ctx->ops->signal2_type_set(ctx, val); 11328b3d6663SArnd Bergmann spu_release(ctx); 113367207b96SArnd Bergmann } 113467207b96SArnd Bergmann 1135104f0cc2SMichael Ellerman static u64 spufs_signal2_type_get(struct spu_context *ctx) 1136bf1ab978SDwayne Grant McConnell { 1137bf1ab978SDwayne Grant McConnell return ctx->ops->signal2_type_get(ctx); 1138bf1ab978SDwayne Grant McConnell } 1139104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, 1140104f0cc2SMichael Ellerman spufs_signal2_type_set, "%llu", SPU_ATTR_ACQUIRE); 114167207b96SArnd Bergmann 114227d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 114378bde53eSBenjamin Herrenschmidt static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma, 114478bde53eSBenjamin Herrenschmidt unsigned long address) 1145d9379c4bSarnd@arndb.de { 114678bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x1000); 1147d9379c4bSarnd@arndb.de } 1148d9379c4bSarnd@arndb.de 1149d9379c4bSarnd@arndb.de static struct vm_operations_struct spufs_mss_mmap_vmops = { 115078bde53eSBenjamin Herrenschmidt .nopfn = spufs_mss_mmap_nopfn, 1151d9379c4bSarnd@arndb.de }; 1152d9379c4bSarnd@arndb.de 1153d9379c4bSarnd@arndb.de /* 1154d9379c4bSarnd@arndb.de * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 1155d9379c4bSarnd@arndb.de */ 1156d9379c4bSarnd@arndb.de static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) 1157d9379c4bSarnd@arndb.de { 1158d9379c4bSarnd@arndb.de if (!(vma->vm_flags & VM_SHARED)) 1159d9379c4bSarnd@arndb.de return -EINVAL; 1160d9379c4bSarnd@arndb.de 116178bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 1162d9379c4bSarnd@arndb.de vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 116323cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 1164d9379c4bSarnd@arndb.de 1165d9379c4bSarnd@arndb.de vma->vm_ops = &spufs_mss_mmap_vmops; 1166d9379c4bSarnd@arndb.de return 0; 1167d9379c4bSarnd@arndb.de } 116827d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 116927d5bf2aSBenjamin Herrenschmidt #define spufs_mss_mmap NULL 117027d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1171d9379c4bSarnd@arndb.de 1172d9379c4bSarnd@arndb.de static int spufs_mss_open(struct inode *inode, struct file *file) 1173d9379c4bSarnd@arndb.de { 1174d9379c4bSarnd@arndb.de struct spufs_inode_info *i = SPUFS_I(inode); 117517e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 1176d9379c4bSarnd@arndb.de 1177d9379c4bSarnd@arndb.de file->private_data = i->i_ctx; 117843c2bbd9SChristoph Hellwig 117947d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 118043c2bbd9SChristoph Hellwig if (!i->i_openers++) 118117e0e270SBenjamin Herrenschmidt ctx->mss = inode->i_mapping; 118247d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 1183d9379c4bSarnd@arndb.de return nonseekable_open(inode, file); 1184d9379c4bSarnd@arndb.de } 1185d9379c4bSarnd@arndb.de 118643c2bbd9SChristoph Hellwig static int 118743c2bbd9SChristoph Hellwig spufs_mss_release(struct inode *inode, struct file *file) 118843c2bbd9SChristoph Hellwig { 118943c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 119043c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 119143c2bbd9SChristoph Hellwig 119247d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 119343c2bbd9SChristoph Hellwig if (!--i->i_openers) 119443c2bbd9SChristoph Hellwig ctx->mss = NULL; 119547d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 119643c2bbd9SChristoph Hellwig return 0; 119743c2bbd9SChristoph Hellwig } 119843c2bbd9SChristoph Hellwig 11995dfe4c96SArjan van de Ven static const struct file_operations spufs_mss_fops = { 1200d9379c4bSarnd@arndb.de .open = spufs_mss_open, 120143c2bbd9SChristoph Hellwig .release = spufs_mss_release, 1202d9379c4bSarnd@arndb.de .mmap = spufs_mss_mmap, 120327d5bf2aSBenjamin Herrenschmidt }; 120427d5bf2aSBenjamin Herrenschmidt 120578bde53eSBenjamin Herrenschmidt static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma, 120678bde53eSBenjamin Herrenschmidt unsigned long address) 120727d5bf2aSBenjamin Herrenschmidt { 120878bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x20000); 120927d5bf2aSBenjamin Herrenschmidt } 121027d5bf2aSBenjamin Herrenschmidt 121127d5bf2aSBenjamin Herrenschmidt static struct vm_operations_struct spufs_psmap_mmap_vmops = { 121278bde53eSBenjamin Herrenschmidt .nopfn = spufs_psmap_mmap_nopfn, 121327d5bf2aSBenjamin Herrenschmidt }; 121427d5bf2aSBenjamin Herrenschmidt 121527d5bf2aSBenjamin Herrenschmidt /* 121627d5bf2aSBenjamin Herrenschmidt * mmap support for full problem state area [0x00000 - 0x1ffff]. 121727d5bf2aSBenjamin Herrenschmidt */ 121827d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) 121927d5bf2aSBenjamin Herrenschmidt { 122027d5bf2aSBenjamin Herrenschmidt if (!(vma->vm_flags & VM_SHARED)) 122127d5bf2aSBenjamin Herrenschmidt return -EINVAL; 122227d5bf2aSBenjamin Herrenschmidt 122378bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 122427d5bf2aSBenjamin Herrenschmidt vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 122527d5bf2aSBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 122627d5bf2aSBenjamin Herrenschmidt 122727d5bf2aSBenjamin Herrenschmidt vma->vm_ops = &spufs_psmap_mmap_vmops; 122827d5bf2aSBenjamin Herrenschmidt return 0; 122927d5bf2aSBenjamin Herrenschmidt } 123027d5bf2aSBenjamin Herrenschmidt 123127d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_open(struct inode *inode, struct file *file) 123227d5bf2aSBenjamin Herrenschmidt { 123327d5bf2aSBenjamin Herrenschmidt struct spufs_inode_info *i = SPUFS_I(inode); 123417e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 123527d5bf2aSBenjamin Herrenschmidt 123647d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 123727d5bf2aSBenjamin Herrenschmidt file->private_data = i->i_ctx; 123843c2bbd9SChristoph Hellwig if (!i->i_openers++) 123917e0e270SBenjamin Herrenschmidt ctx->psmap = inode->i_mapping; 124047d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 124127d5bf2aSBenjamin Herrenschmidt return nonseekable_open(inode, file); 124227d5bf2aSBenjamin Herrenschmidt } 124327d5bf2aSBenjamin Herrenschmidt 124443c2bbd9SChristoph Hellwig static int 124543c2bbd9SChristoph Hellwig spufs_psmap_release(struct inode *inode, struct file *file) 124643c2bbd9SChristoph Hellwig { 124743c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 124843c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 124943c2bbd9SChristoph Hellwig 125047d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 125143c2bbd9SChristoph Hellwig if (!--i->i_openers) 125243c2bbd9SChristoph Hellwig ctx->psmap = NULL; 125347d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 125443c2bbd9SChristoph Hellwig return 0; 125543c2bbd9SChristoph Hellwig } 125643c2bbd9SChristoph Hellwig 12575dfe4c96SArjan van de Ven static const struct file_operations spufs_psmap_fops = { 125827d5bf2aSBenjamin Herrenschmidt .open = spufs_psmap_open, 125943c2bbd9SChristoph Hellwig .release = spufs_psmap_release, 126027d5bf2aSBenjamin Herrenschmidt .mmap = spufs_psmap_mmap, 1261d9379c4bSarnd@arndb.de }; 1262d9379c4bSarnd@arndb.de 1263d9379c4bSarnd@arndb.de 126427d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 126578bde53eSBenjamin Herrenschmidt static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma, 126678bde53eSBenjamin Herrenschmidt unsigned long address) 12676df10a82SMark Nutter { 126878bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x3000, 0x1000); 12696df10a82SMark Nutter } 12706df10a82SMark Nutter 12716df10a82SMark Nutter static struct vm_operations_struct spufs_mfc_mmap_vmops = { 127278bde53eSBenjamin Herrenschmidt .nopfn = spufs_mfc_mmap_nopfn, 12736df10a82SMark Nutter }; 12746df10a82SMark Nutter 12756df10a82SMark Nutter /* 12766df10a82SMark Nutter * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 12776df10a82SMark Nutter */ 12786df10a82SMark Nutter static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) 12796df10a82SMark Nutter { 12806df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 12816df10a82SMark Nutter return -EINVAL; 12826df10a82SMark Nutter 128378bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 12846df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 128523cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 12866df10a82SMark Nutter 12876df10a82SMark Nutter vma->vm_ops = &spufs_mfc_mmap_vmops; 12886df10a82SMark Nutter return 0; 12896df10a82SMark Nutter } 129027d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 129127d5bf2aSBenjamin Herrenschmidt #define spufs_mfc_mmap NULL 129227d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1293a33a7d73SArnd Bergmann 1294a33a7d73SArnd Bergmann static int spufs_mfc_open(struct inode *inode, struct file *file) 1295a33a7d73SArnd Bergmann { 1296a33a7d73SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 1297a33a7d73SArnd Bergmann struct spu_context *ctx = i->i_ctx; 1298a33a7d73SArnd Bergmann 1299a33a7d73SArnd Bergmann /* we don't want to deal with DMA into other processes */ 1300a33a7d73SArnd Bergmann if (ctx->owner != current->mm) 1301a33a7d73SArnd Bergmann return -EINVAL; 1302a33a7d73SArnd Bergmann 1303a33a7d73SArnd Bergmann if (atomic_read(&inode->i_count) != 1) 1304a33a7d73SArnd Bergmann return -EBUSY; 1305a33a7d73SArnd Bergmann 130647d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 1307a33a7d73SArnd Bergmann file->private_data = ctx; 130843c2bbd9SChristoph Hellwig if (!i->i_openers++) 130917e0e270SBenjamin Herrenschmidt ctx->mfc = inode->i_mapping; 131047d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 1311a33a7d73SArnd Bergmann return nonseekable_open(inode, file); 1312a33a7d73SArnd Bergmann } 1313a33a7d73SArnd Bergmann 131443c2bbd9SChristoph Hellwig static int 131543c2bbd9SChristoph Hellwig spufs_mfc_release(struct inode *inode, struct file *file) 131643c2bbd9SChristoph Hellwig { 131743c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 131843c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 131943c2bbd9SChristoph Hellwig 132047d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 132143c2bbd9SChristoph Hellwig if (!--i->i_openers) 132243c2bbd9SChristoph Hellwig ctx->mfc = NULL; 132347d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 132443c2bbd9SChristoph Hellwig return 0; 132543c2bbd9SChristoph Hellwig } 132643c2bbd9SChristoph Hellwig 1327a33a7d73SArnd Bergmann /* interrupt-level mfc callback function. */ 1328a33a7d73SArnd Bergmann void spufs_mfc_callback(struct spu *spu) 1329a33a7d73SArnd Bergmann { 1330a33a7d73SArnd Bergmann struct spu_context *ctx = spu->ctx; 1331a33a7d73SArnd Bergmann 1332a33a7d73SArnd Bergmann wake_up_all(&ctx->mfc_wq); 1333a33a7d73SArnd Bergmann 1334a33a7d73SArnd Bergmann pr_debug("%s %s\n", __FUNCTION__, spu->name); 1335a33a7d73SArnd Bergmann if (ctx->mfc_fasync) { 1336a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1337a33a7d73SArnd Bergmann unsigned int mask; 1338a33a7d73SArnd Bergmann 1339a33a7d73SArnd Bergmann /* no need for spu_acquire in interrupt context */ 1340a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1341a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1342a33a7d73SArnd Bergmann 1343a33a7d73SArnd Bergmann mask = 0; 1344a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1345a33a7d73SArnd Bergmann mask |= POLLOUT; 1346a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1347a33a7d73SArnd Bergmann mask |= POLLIN; 1348a33a7d73SArnd Bergmann 1349a33a7d73SArnd Bergmann kill_fasync(&ctx->mfc_fasync, SIGIO, mask); 1350a33a7d73SArnd Bergmann } 1351a33a7d73SArnd Bergmann } 1352a33a7d73SArnd Bergmann 1353a33a7d73SArnd Bergmann static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) 1354a33a7d73SArnd Bergmann { 1355a33a7d73SArnd Bergmann /* See if there is one tag group is complete */ 1356a33a7d73SArnd Bergmann /* FIXME we need locking around tagwait */ 1357a33a7d73SArnd Bergmann *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; 1358a33a7d73SArnd Bergmann ctx->tagwait &= ~*status; 1359a33a7d73SArnd Bergmann if (*status) 1360a33a7d73SArnd Bergmann return 1; 1361a33a7d73SArnd Bergmann 1362a33a7d73SArnd Bergmann /* enable interrupt waiting for any tag group, 1363a33a7d73SArnd Bergmann may silently fail if interrupts are already enabled */ 1364a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1365a33a7d73SArnd Bergmann return 0; 1366a33a7d73SArnd Bergmann } 1367a33a7d73SArnd Bergmann 1368a33a7d73SArnd Bergmann static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, 1369a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1370a33a7d73SArnd Bergmann { 1371a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1372a33a7d73SArnd Bergmann int ret = -EINVAL; 1373a33a7d73SArnd Bergmann u32 status; 1374a33a7d73SArnd Bergmann 1375a33a7d73SArnd Bergmann if (size != 4) 1376a33a7d73SArnd Bergmann goto out; 1377a33a7d73SArnd Bergmann 1378a33a7d73SArnd Bergmann spu_acquire(ctx); 1379a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1380a33a7d73SArnd Bergmann status = ctx->ops->read_mfc_tagstatus(ctx); 1381a33a7d73SArnd Bergmann if (!(status & ctx->tagwait)) 1382a33a7d73SArnd Bergmann ret = -EAGAIN; 1383a33a7d73SArnd Bergmann else 1384a33a7d73SArnd Bergmann ctx->tagwait &= ~status; 1385a33a7d73SArnd Bergmann } else { 1386a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1387a33a7d73SArnd Bergmann spufs_read_mfc_tagstatus(ctx, &status)); 1388a33a7d73SArnd Bergmann } 1389a33a7d73SArnd Bergmann spu_release(ctx); 1390a33a7d73SArnd Bergmann 1391a33a7d73SArnd Bergmann if (ret) 1392a33a7d73SArnd Bergmann goto out; 1393a33a7d73SArnd Bergmann 1394a33a7d73SArnd Bergmann ret = 4; 1395a33a7d73SArnd Bergmann if (copy_to_user(buffer, &status, 4)) 1396a33a7d73SArnd Bergmann ret = -EFAULT; 1397a33a7d73SArnd Bergmann 1398a33a7d73SArnd Bergmann out: 1399a33a7d73SArnd Bergmann return ret; 1400a33a7d73SArnd Bergmann } 1401a33a7d73SArnd Bergmann 1402a33a7d73SArnd Bergmann static int spufs_check_valid_dma(struct mfc_dma_command *cmd) 1403a33a7d73SArnd Bergmann { 1404a33a7d73SArnd Bergmann pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, 1405a33a7d73SArnd Bergmann cmd->ea, cmd->size, cmd->tag, cmd->cmd); 1406a33a7d73SArnd Bergmann 1407a33a7d73SArnd Bergmann switch (cmd->cmd) { 1408a33a7d73SArnd Bergmann case MFC_PUT_CMD: 1409a33a7d73SArnd Bergmann case MFC_PUTF_CMD: 1410a33a7d73SArnd Bergmann case MFC_PUTB_CMD: 1411a33a7d73SArnd Bergmann case MFC_GET_CMD: 1412a33a7d73SArnd Bergmann case MFC_GETF_CMD: 1413a33a7d73SArnd Bergmann case MFC_GETB_CMD: 1414a33a7d73SArnd Bergmann break; 1415a33a7d73SArnd Bergmann default: 1416a33a7d73SArnd Bergmann pr_debug("invalid DMA opcode %x\n", cmd->cmd); 1417a33a7d73SArnd Bergmann return -EIO; 1418a33a7d73SArnd Bergmann } 1419a33a7d73SArnd Bergmann 1420a33a7d73SArnd Bergmann if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { 1421a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment, ea %lx lsa %x\n", 1422a33a7d73SArnd Bergmann cmd->ea, cmd->lsa); 1423a33a7d73SArnd Bergmann return -EIO; 1424a33a7d73SArnd Bergmann } 1425a33a7d73SArnd Bergmann 1426a33a7d73SArnd Bergmann switch (cmd->size & 0xf) { 1427a33a7d73SArnd Bergmann case 1: 1428a33a7d73SArnd Bergmann break; 1429a33a7d73SArnd Bergmann case 2: 1430a33a7d73SArnd Bergmann if (cmd->lsa & 1) 1431a33a7d73SArnd Bergmann goto error; 1432a33a7d73SArnd Bergmann break; 1433a33a7d73SArnd Bergmann case 4: 1434a33a7d73SArnd Bergmann if (cmd->lsa & 3) 1435a33a7d73SArnd Bergmann goto error; 1436a33a7d73SArnd Bergmann break; 1437a33a7d73SArnd Bergmann case 8: 1438a33a7d73SArnd Bergmann if (cmd->lsa & 7) 1439a33a7d73SArnd Bergmann goto error; 1440a33a7d73SArnd Bergmann break; 1441a33a7d73SArnd Bergmann case 0: 1442a33a7d73SArnd Bergmann if (cmd->lsa & 15) 1443a33a7d73SArnd Bergmann goto error; 1444a33a7d73SArnd Bergmann break; 1445a33a7d73SArnd Bergmann error: 1446a33a7d73SArnd Bergmann default: 1447a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment %x for size %x\n", 1448a33a7d73SArnd Bergmann cmd->lsa & 0xf, cmd->size); 1449a33a7d73SArnd Bergmann return -EIO; 1450a33a7d73SArnd Bergmann } 1451a33a7d73SArnd Bergmann 1452a33a7d73SArnd Bergmann if (cmd->size > 16 * 1024) { 1453a33a7d73SArnd Bergmann pr_debug("invalid DMA size %x\n", cmd->size); 1454a33a7d73SArnd Bergmann return -EIO; 1455a33a7d73SArnd Bergmann } 1456a33a7d73SArnd Bergmann 1457a33a7d73SArnd Bergmann if (cmd->tag & 0xfff0) { 1458a33a7d73SArnd Bergmann /* we reserve the higher tag numbers for kernel use */ 1459a33a7d73SArnd Bergmann pr_debug("invalid DMA tag\n"); 1460a33a7d73SArnd Bergmann return -EIO; 1461a33a7d73SArnd Bergmann } 1462a33a7d73SArnd Bergmann 1463a33a7d73SArnd Bergmann if (cmd->class) { 1464a33a7d73SArnd Bergmann /* not supported in this version */ 1465a33a7d73SArnd Bergmann pr_debug("invalid DMA class\n"); 1466a33a7d73SArnd Bergmann return -EIO; 1467a33a7d73SArnd Bergmann } 1468a33a7d73SArnd Bergmann 1469a33a7d73SArnd Bergmann return 0; 1470a33a7d73SArnd Bergmann } 1471a33a7d73SArnd Bergmann 1472a33a7d73SArnd Bergmann static int spu_send_mfc_command(struct spu_context *ctx, 1473a33a7d73SArnd Bergmann struct mfc_dma_command cmd, 1474a33a7d73SArnd Bergmann int *error) 1475a33a7d73SArnd Bergmann { 1476a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1477a33a7d73SArnd Bergmann if (*error == -EAGAIN) { 1478a33a7d73SArnd Bergmann /* wait for any tag group to complete 1479a33a7d73SArnd Bergmann so we have space for the new command */ 1480a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1481a33a7d73SArnd Bergmann /* try again, because the queue might be 1482a33a7d73SArnd Bergmann empty again */ 1483a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1484a33a7d73SArnd Bergmann if (*error == -EAGAIN) 1485a33a7d73SArnd Bergmann return 0; 1486a33a7d73SArnd Bergmann } 1487a33a7d73SArnd Bergmann return 1; 1488a33a7d73SArnd Bergmann } 1489a33a7d73SArnd Bergmann 1490a33a7d73SArnd Bergmann static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, 1491a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1492a33a7d73SArnd Bergmann { 1493a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1494a33a7d73SArnd Bergmann struct mfc_dma_command cmd; 1495a33a7d73SArnd Bergmann int ret = -EINVAL; 1496a33a7d73SArnd Bergmann 1497a33a7d73SArnd Bergmann if (size != sizeof cmd) 1498a33a7d73SArnd Bergmann goto out; 1499a33a7d73SArnd Bergmann 1500a33a7d73SArnd Bergmann ret = -EFAULT; 1501a33a7d73SArnd Bergmann if (copy_from_user(&cmd, buffer, sizeof cmd)) 1502a33a7d73SArnd Bergmann goto out; 1503a33a7d73SArnd Bergmann 1504a33a7d73SArnd Bergmann ret = spufs_check_valid_dma(&cmd); 1505a33a7d73SArnd Bergmann if (ret) 1506a33a7d73SArnd Bergmann goto out; 1507a33a7d73SArnd Bergmann 1508577f8f10SAkinobu Mita ret = spu_acquire_runnable(ctx, 0); 1509577f8f10SAkinobu Mita if (ret) 1510577f8f10SAkinobu Mita goto out; 1511577f8f10SAkinobu Mita 1512a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1513a33a7d73SArnd Bergmann ret = ctx->ops->send_mfc_command(ctx, &cmd); 1514a33a7d73SArnd Bergmann } else { 1515a33a7d73SArnd Bergmann int status; 1516a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1517a33a7d73SArnd Bergmann spu_send_mfc_command(ctx, cmd, &status)); 1518a33a7d73SArnd Bergmann if (status) 1519a33a7d73SArnd Bergmann ret = status; 1520a33a7d73SArnd Bergmann } 1521a33a7d73SArnd Bergmann 1522a33a7d73SArnd Bergmann if (ret) 1523933b0e35SKazunori Asayama goto out_unlock; 1524a33a7d73SArnd Bergmann 1525a33a7d73SArnd Bergmann ctx->tagwait |= 1 << cmd.tag; 15263692dc66SMasato Noguchi ret = size; 1527a33a7d73SArnd Bergmann 1528933b0e35SKazunori Asayama out_unlock: 1529933b0e35SKazunori Asayama spu_release(ctx); 1530a33a7d73SArnd Bergmann out: 1531a33a7d73SArnd Bergmann return ret; 1532a33a7d73SArnd Bergmann } 1533a33a7d73SArnd Bergmann 1534a33a7d73SArnd Bergmann static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) 1535a33a7d73SArnd Bergmann { 1536a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1537a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1538a33a7d73SArnd Bergmann unsigned int mask; 1539a33a7d73SArnd Bergmann 1540933b0e35SKazunori Asayama poll_wait(file, &ctx->mfc_wq, wait); 1541933b0e35SKazunori Asayama 1542a33a7d73SArnd Bergmann spu_acquire(ctx); 1543a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); 1544a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1545a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1546a33a7d73SArnd Bergmann spu_release(ctx); 1547a33a7d73SArnd Bergmann 1548a33a7d73SArnd Bergmann mask = 0; 1549a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1550a33a7d73SArnd Bergmann mask |= POLLOUT | POLLWRNORM; 1551a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1552a33a7d73SArnd Bergmann mask |= POLLIN | POLLRDNORM; 1553a33a7d73SArnd Bergmann 1554a33a7d73SArnd Bergmann pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, 1555a33a7d73SArnd Bergmann free_elements, tagstatus, ctx->tagwait); 1556a33a7d73SArnd Bergmann 1557a33a7d73SArnd Bergmann return mask; 1558a33a7d73SArnd Bergmann } 1559a33a7d73SArnd Bergmann 156073b6af8aSAl Viro static int spufs_mfc_flush(struct file *file, fl_owner_t id) 1561a33a7d73SArnd Bergmann { 1562a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1563a33a7d73SArnd Bergmann int ret; 1564a33a7d73SArnd Bergmann 1565a33a7d73SArnd Bergmann spu_acquire(ctx); 1566a33a7d73SArnd Bergmann #if 0 1567a33a7d73SArnd Bergmann /* this currently hangs */ 1568a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1569a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); 1570a33a7d73SArnd Bergmann if (ret) 1571a33a7d73SArnd Bergmann goto out; 1572a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1573a33a7d73SArnd Bergmann ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); 1574a33a7d73SArnd Bergmann out: 1575a33a7d73SArnd Bergmann #else 1576a33a7d73SArnd Bergmann ret = 0; 1577a33a7d73SArnd Bergmann #endif 1578a33a7d73SArnd Bergmann spu_release(ctx); 1579a33a7d73SArnd Bergmann 1580a33a7d73SArnd Bergmann return ret; 1581a33a7d73SArnd Bergmann } 1582a33a7d73SArnd Bergmann 1583a33a7d73SArnd Bergmann static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, 1584a33a7d73SArnd Bergmann int datasync) 1585a33a7d73SArnd Bergmann { 158673b6af8aSAl Viro return spufs_mfc_flush(file, NULL); 1587a33a7d73SArnd Bergmann } 1588a33a7d73SArnd Bergmann 1589a33a7d73SArnd Bergmann static int spufs_mfc_fasync(int fd, struct file *file, int on) 1590a33a7d73SArnd Bergmann { 1591a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1592a33a7d73SArnd Bergmann 1593a33a7d73SArnd Bergmann return fasync_helper(fd, file, on, &ctx->mfc_fasync); 1594a33a7d73SArnd Bergmann } 1595a33a7d73SArnd Bergmann 15965dfe4c96SArjan van de Ven static const struct file_operations spufs_mfc_fops = { 1597a33a7d73SArnd Bergmann .open = spufs_mfc_open, 159843c2bbd9SChristoph Hellwig .release = spufs_mfc_release, 1599a33a7d73SArnd Bergmann .read = spufs_mfc_read, 1600a33a7d73SArnd Bergmann .write = spufs_mfc_write, 1601a33a7d73SArnd Bergmann .poll = spufs_mfc_poll, 1602a33a7d73SArnd Bergmann .flush = spufs_mfc_flush, 1603a33a7d73SArnd Bergmann .fsync = spufs_mfc_fsync, 1604a33a7d73SArnd Bergmann .fasync = spufs_mfc_fasync, 16056df10a82SMark Nutter .mmap = spufs_mfc_mmap, 1606a33a7d73SArnd Bergmann }; 1607a33a7d73SArnd Bergmann 160867207b96SArnd Bergmann static void spufs_npc_set(void *data, u64 val) 160967207b96SArnd Bergmann { 161067207b96SArnd Bergmann struct spu_context *ctx = data; 16118b3d6663SArnd Bergmann spu_acquire(ctx); 16128b3d6663SArnd Bergmann ctx->ops->npc_write(ctx, val); 16138b3d6663SArnd Bergmann spu_release(ctx); 161467207b96SArnd Bergmann } 161567207b96SArnd Bergmann 1616104f0cc2SMichael Ellerman static u64 spufs_npc_get(struct spu_context *ctx) 161778810ff6SMichael Ellerman { 161878810ff6SMichael Ellerman return ctx->ops->npc_read(ctx); 161978810ff6SMichael Ellerman } 1620104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, 1621104f0cc2SMichael Ellerman "0x%llx\n", SPU_ATTR_ACQUIRE); 162267207b96SArnd Bergmann 16238b3d6663SArnd Bergmann static void spufs_decr_set(void *data, u64 val) 16248b3d6663SArnd Bergmann { 16258b3d6663SArnd Bergmann struct spu_context *ctx = data; 16268b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 16278b3d6663SArnd Bergmann spu_acquire_saved(ctx); 16288b3d6663SArnd Bergmann lscsa->decr.slot[0] = (u32) val; 162927b1ea09SChristoph Hellwig spu_release_saved(ctx); 16308b3d6663SArnd Bergmann } 16318b3d6663SArnd Bergmann 1632104f0cc2SMichael Ellerman static u64 spufs_decr_get(struct spu_context *ctx) 16338b3d6663SArnd Bergmann { 16348b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1635bf1ab978SDwayne Grant McConnell return lscsa->decr.slot[0]; 1636bf1ab978SDwayne Grant McConnell } 1637104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, 1638104f0cc2SMichael Ellerman "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED); 16398b3d6663SArnd Bergmann 16408b3d6663SArnd Bergmann static void spufs_decr_status_set(void *data, u64 val) 16418b3d6663SArnd Bergmann { 16428b3d6663SArnd Bergmann struct spu_context *ctx = data; 16438b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1644d40a01d4SMasato Noguchi if (val) 1645d40a01d4SMasato Noguchi ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; 1646d40a01d4SMasato Noguchi else 1647d40a01d4SMasato Noguchi ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; 164827b1ea09SChristoph Hellwig spu_release_saved(ctx); 16498b3d6663SArnd Bergmann } 16508b3d6663SArnd Bergmann 1651104f0cc2SMichael Ellerman static u64 spufs_decr_status_get(struct spu_context *ctx) 16528b3d6663SArnd Bergmann { 1653d40a01d4SMasato Noguchi if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) 1654d40a01d4SMasato Noguchi return SPU_DECR_STATUS_RUNNING; 1655d40a01d4SMasato Noguchi else 1656d40a01d4SMasato Noguchi return 0; 1657bf1ab978SDwayne Grant McConnell } 1658104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, 1659104f0cc2SMichael Ellerman spufs_decr_status_set, "0x%llx\n", 1660104f0cc2SMichael Ellerman SPU_ATTR_ACQUIRE_SAVED); 16618b3d6663SArnd Bergmann 16628b3d6663SArnd Bergmann static void spufs_event_mask_set(void *data, u64 val) 16638b3d6663SArnd Bergmann { 16648b3d6663SArnd Bergmann struct spu_context *ctx = data; 16658b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 16668b3d6663SArnd Bergmann spu_acquire_saved(ctx); 16678b3d6663SArnd Bergmann lscsa->event_mask.slot[0] = (u32) val; 166827b1ea09SChristoph Hellwig spu_release_saved(ctx); 16698b3d6663SArnd Bergmann } 16708b3d6663SArnd Bergmann 1671104f0cc2SMichael Ellerman static u64 spufs_event_mask_get(struct spu_context *ctx) 16728b3d6663SArnd Bergmann { 16738b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1674bf1ab978SDwayne Grant McConnell return lscsa->event_mask.slot[0]; 1675bf1ab978SDwayne Grant McConnell } 1676bf1ab978SDwayne Grant McConnell 1677104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, 1678104f0cc2SMichael Ellerman spufs_event_mask_set, "0x%llx\n", 1679104f0cc2SMichael Ellerman SPU_ATTR_ACQUIRE_SAVED); 16808b3d6663SArnd Bergmann 1681104f0cc2SMichael Ellerman static u64 spufs_event_status_get(struct spu_context *ctx) 1682b9e3bd77SDwayne Grant McConnell { 1683b9e3bd77SDwayne Grant McConnell struct spu_state *state = &ctx->csa; 1684b9e3bd77SDwayne Grant McConnell u64 stat; 1685b9e3bd77SDwayne Grant McConnell stat = state->spu_chnlcnt_RW[0]; 1686b9e3bd77SDwayne Grant McConnell if (stat) 1687bf1ab978SDwayne Grant McConnell return state->spu_chnldata_RW[0]; 1688bf1ab978SDwayne Grant McConnell return 0; 1689bf1ab978SDwayne Grant McConnell } 1690104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, 1691104f0cc2SMichael Ellerman NULL, "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) 1692b9e3bd77SDwayne Grant McConnell 16938b3d6663SArnd Bergmann static void spufs_srr0_set(void *data, u64 val) 16948b3d6663SArnd Bergmann { 16958b3d6663SArnd Bergmann struct spu_context *ctx = data; 16968b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 16978b3d6663SArnd Bergmann spu_acquire_saved(ctx); 16988b3d6663SArnd Bergmann lscsa->srr0.slot[0] = (u32) val; 169927b1ea09SChristoph Hellwig spu_release_saved(ctx); 17008b3d6663SArnd Bergmann } 17018b3d6663SArnd Bergmann 1702104f0cc2SMichael Ellerman static u64 spufs_srr0_get(struct spu_context *ctx) 17038b3d6663SArnd Bergmann { 17048b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1705104f0cc2SMichael Ellerman return lscsa->srr0.slot[0]; 17068b3d6663SArnd Bergmann } 1707104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, 1708104f0cc2SMichael Ellerman "0x%llx\n", SPU_ATTR_ACQUIRE_SAVED) 17098b3d6663SArnd Bergmann 1710104f0cc2SMichael Ellerman static u64 spufs_id_get(struct spu_context *ctx) 17117b1a7014Sarnd@arndb.de { 17127b1a7014Sarnd@arndb.de u64 num; 17137b1a7014Sarnd@arndb.de 17147b1a7014Sarnd@arndb.de if (ctx->state == SPU_STATE_RUNNABLE) 17157b1a7014Sarnd@arndb.de num = ctx->spu->number; 17167b1a7014Sarnd@arndb.de else 17177b1a7014Sarnd@arndb.de num = (unsigned int)-1; 17187b1a7014Sarnd@arndb.de 17197b1a7014Sarnd@arndb.de return num; 17207b1a7014Sarnd@arndb.de } 1721104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n", 1722104f0cc2SMichael Ellerman SPU_ATTR_ACQUIRE) 17237b1a7014Sarnd@arndb.de 1724104f0cc2SMichael Ellerman static u64 spufs_object_id_get(struct spu_context *ctx) 1725bf1ab978SDwayne Grant McConnell { 1726bf1ab978SDwayne Grant McConnell /* FIXME: Should there really be no locking here? */ 1727104f0cc2SMichael Ellerman return ctx->object_id; 1728bf1ab978SDwayne Grant McConnell } 1729bf1ab978SDwayne Grant McConnell 173086767277SArnd Bergmann static void spufs_object_id_set(void *data, u64 id) 173186767277SArnd Bergmann { 173286767277SArnd Bergmann struct spu_context *ctx = data; 173386767277SArnd Bergmann ctx->object_id = id; 173486767277SArnd Bergmann } 173586767277SArnd Bergmann 1736104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, 1737104f0cc2SMichael Ellerman spufs_object_id_set, "0x%llx\n", SPU_ATTR_NOACQUIRE); 173886767277SArnd Bergmann 1739104f0cc2SMichael Ellerman static u64 spufs_lslr_get(struct spu_context *ctx) 1740bf1ab978SDwayne Grant McConnell { 1741bf1ab978SDwayne Grant McConnell return ctx->csa.priv2.spu_lslr_RW; 1742bf1ab978SDwayne Grant McConnell } 1743104f0cc2SMichael Ellerman DEFINE_SPUFS_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n", 1744104f0cc2SMichael Ellerman SPU_ATTR_ACQUIRE_SAVED); 1745b9e3bd77SDwayne Grant McConnell 1746b9e3bd77SDwayne Grant McConnell static int spufs_info_open(struct inode *inode, struct file *file) 1747b9e3bd77SDwayne Grant McConnell { 1748b9e3bd77SDwayne Grant McConnell struct spufs_inode_info *i = SPUFS_I(inode); 1749b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = i->i_ctx; 1750b9e3bd77SDwayne Grant McConnell file->private_data = ctx; 1751b9e3bd77SDwayne Grant McConnell return 0; 1752b9e3bd77SDwayne Grant McConnell } 1753b9e3bd77SDwayne Grant McConnell 1754cbe709c1SBenjamin Herrenschmidt static int spufs_caps_show(struct seq_file *s, void *private) 1755cbe709c1SBenjamin Herrenschmidt { 1756cbe709c1SBenjamin Herrenschmidt struct spu_context *ctx = s->private; 1757cbe709c1SBenjamin Herrenschmidt 1758cbe709c1SBenjamin Herrenschmidt if (!(ctx->flags & SPU_CREATE_NOSCHED)) 1759cbe709c1SBenjamin Herrenschmidt seq_puts(s, "sched\n"); 1760cbe709c1SBenjamin Herrenschmidt if (!(ctx->flags & SPU_CREATE_ISOLATE)) 1761cbe709c1SBenjamin Herrenschmidt seq_puts(s, "step\n"); 1762cbe709c1SBenjamin Herrenschmidt return 0; 1763cbe709c1SBenjamin Herrenschmidt } 1764cbe709c1SBenjamin Herrenschmidt 1765cbe709c1SBenjamin Herrenschmidt static int spufs_caps_open(struct inode *inode, struct file *file) 1766cbe709c1SBenjamin Herrenschmidt { 1767cbe709c1SBenjamin Herrenschmidt return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); 1768cbe709c1SBenjamin Herrenschmidt } 1769cbe709c1SBenjamin Herrenschmidt 1770cbe709c1SBenjamin Herrenschmidt static const struct file_operations spufs_caps_fops = { 1771cbe709c1SBenjamin Herrenschmidt .open = spufs_caps_open, 1772cbe709c1SBenjamin Herrenschmidt .read = seq_read, 1773cbe709c1SBenjamin Herrenschmidt .llseek = seq_lseek, 1774cbe709c1SBenjamin Herrenschmidt .release = single_release, 1775cbe709c1SBenjamin Herrenschmidt }; 1776cbe709c1SBenjamin Herrenschmidt 1777bf1ab978SDwayne Grant McConnell static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, 1778bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1779bf1ab978SDwayne Grant McConnell { 1780bf1ab978SDwayne Grant McConnell u32 mbox_stat; 1781bf1ab978SDwayne Grant McConnell u32 data; 1782bf1ab978SDwayne Grant McConnell 1783bf1ab978SDwayne Grant McConnell mbox_stat = ctx->csa.prob.mb_stat_R; 1784bf1ab978SDwayne Grant McConnell if (mbox_stat & 0x0000ff) { 1785bf1ab978SDwayne Grant McConnell data = ctx->csa.prob.pu_mb_R; 1786bf1ab978SDwayne Grant McConnell } 1787bf1ab978SDwayne Grant McConnell 1788bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1789bf1ab978SDwayne Grant McConnell } 1790bf1ab978SDwayne Grant McConnell 179169a2f00cSDwayne Grant McConnell static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, 179269a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 179369a2f00cSDwayne Grant McConnell { 1794bf1ab978SDwayne Grant McConnell int ret; 179569a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 179669a2f00cSDwayne Grant McConnell 179769a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 179869a2f00cSDwayne Grant McConnell return -EFAULT; 179969a2f00cSDwayne Grant McConnell 180069a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 180169a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1802bf1ab978SDwayne Grant McConnell ret = __spufs_mbox_info_read(ctx, buf, len, pos); 180369a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 180427b1ea09SChristoph Hellwig spu_release_saved(ctx); 180569a2f00cSDwayne Grant McConnell 1806bf1ab978SDwayne Grant McConnell return ret; 180769a2f00cSDwayne Grant McConnell } 180869a2f00cSDwayne Grant McConnell 18095dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_info_fops = { 181069a2f00cSDwayne Grant McConnell .open = spufs_info_open, 181169a2f00cSDwayne Grant McConnell .read = spufs_mbox_info_read, 181269a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 181369a2f00cSDwayne Grant McConnell }; 181469a2f00cSDwayne Grant McConnell 1815bf1ab978SDwayne Grant McConnell static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, 1816bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1817bf1ab978SDwayne Grant McConnell { 1818bf1ab978SDwayne Grant McConnell u32 ibox_stat; 1819bf1ab978SDwayne Grant McConnell u32 data; 1820bf1ab978SDwayne Grant McConnell 1821bf1ab978SDwayne Grant McConnell ibox_stat = ctx->csa.prob.mb_stat_R; 1822bf1ab978SDwayne Grant McConnell if (ibox_stat & 0xff0000) { 1823bf1ab978SDwayne Grant McConnell data = ctx->csa.priv2.puint_mb_R; 1824bf1ab978SDwayne Grant McConnell } 1825bf1ab978SDwayne Grant McConnell 1826bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1827bf1ab978SDwayne Grant McConnell } 1828bf1ab978SDwayne Grant McConnell 182969a2f00cSDwayne Grant McConnell static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, 183069a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 183169a2f00cSDwayne Grant McConnell { 183269a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1833bf1ab978SDwayne Grant McConnell int ret; 183469a2f00cSDwayne Grant McConnell 183569a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 183669a2f00cSDwayne Grant McConnell return -EFAULT; 183769a2f00cSDwayne Grant McConnell 183869a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 183969a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1840bf1ab978SDwayne Grant McConnell ret = __spufs_ibox_info_read(ctx, buf, len, pos); 184169a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 184227b1ea09SChristoph Hellwig spu_release_saved(ctx); 184369a2f00cSDwayne Grant McConnell 1844bf1ab978SDwayne Grant McConnell return ret; 184569a2f00cSDwayne Grant McConnell } 184669a2f00cSDwayne Grant McConnell 18475dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_info_fops = { 184869a2f00cSDwayne Grant McConnell .open = spufs_info_open, 184969a2f00cSDwayne Grant McConnell .read = spufs_ibox_info_read, 185069a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 185169a2f00cSDwayne Grant McConnell }; 185269a2f00cSDwayne Grant McConnell 1853bf1ab978SDwayne Grant McConnell static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, 1854bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1855bf1ab978SDwayne Grant McConnell { 1856bf1ab978SDwayne Grant McConnell int i, cnt; 1857bf1ab978SDwayne Grant McConnell u32 data[4]; 1858bf1ab978SDwayne Grant McConnell u32 wbox_stat; 1859bf1ab978SDwayne Grant McConnell 1860bf1ab978SDwayne Grant McConnell wbox_stat = ctx->csa.prob.mb_stat_R; 1861bf1ab978SDwayne Grant McConnell cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); 1862bf1ab978SDwayne Grant McConnell for (i = 0; i < cnt; i++) { 1863bf1ab978SDwayne Grant McConnell data[i] = ctx->csa.spu_mailbox_data[i]; 1864bf1ab978SDwayne Grant McConnell } 1865bf1ab978SDwayne Grant McConnell 1866bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, 1867bf1ab978SDwayne Grant McConnell cnt * sizeof(u32)); 1868bf1ab978SDwayne Grant McConnell } 1869bf1ab978SDwayne Grant McConnell 187069a2f00cSDwayne Grant McConnell static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, 187169a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 187269a2f00cSDwayne Grant McConnell { 187369a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1874bf1ab978SDwayne Grant McConnell int ret; 187569a2f00cSDwayne Grant McConnell 187669a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 187769a2f00cSDwayne Grant McConnell return -EFAULT; 187869a2f00cSDwayne Grant McConnell 187969a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 188069a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1881bf1ab978SDwayne Grant McConnell ret = __spufs_wbox_info_read(ctx, buf, len, pos); 188269a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 188327b1ea09SChristoph Hellwig spu_release_saved(ctx); 188469a2f00cSDwayne Grant McConnell 1885bf1ab978SDwayne Grant McConnell return ret; 188669a2f00cSDwayne Grant McConnell } 188769a2f00cSDwayne Grant McConnell 18885dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_info_fops = { 188969a2f00cSDwayne Grant McConnell .open = spufs_info_open, 189069a2f00cSDwayne Grant McConnell .read = spufs_wbox_info_read, 189169a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 189269a2f00cSDwayne Grant McConnell }; 189369a2f00cSDwayne Grant McConnell 1894bf1ab978SDwayne Grant McConnell static ssize_t __spufs_dma_info_read(struct spu_context *ctx, 1895bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1896b9e3bd77SDwayne Grant McConnell { 1897b9e3bd77SDwayne Grant McConnell struct spu_dma_info info; 1898b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *spuqp; 1899b9e3bd77SDwayne Grant McConnell int i; 1900b9e3bd77SDwayne Grant McConnell 1901b9e3bd77SDwayne Grant McConnell info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; 1902b9e3bd77SDwayne Grant McConnell info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; 1903b9e3bd77SDwayne Grant McConnell info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; 1904b9e3bd77SDwayne Grant McConnell info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; 1905b9e3bd77SDwayne Grant McConnell info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; 1906b9e3bd77SDwayne Grant McConnell for (i = 0; i < 16; i++) { 1907b9e3bd77SDwayne Grant McConnell qp = &info.dma_info_command_data[i]; 1908b9e3bd77SDwayne Grant McConnell spuqp = &ctx->csa.priv2.spuq[i]; 1909b9e3bd77SDwayne Grant McConnell 1910b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; 1911b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; 1912b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; 1913b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; 1914b9e3bd77SDwayne Grant McConnell } 1915b9e3bd77SDwayne Grant McConnell 1916b9e3bd77SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 1917b9e3bd77SDwayne Grant McConnell sizeof info); 1918b9e3bd77SDwayne Grant McConnell } 1919b9e3bd77SDwayne Grant McConnell 1920bf1ab978SDwayne Grant McConnell static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, 1921bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 1922bf1ab978SDwayne Grant McConnell { 1923bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1924bf1ab978SDwayne Grant McConnell int ret; 1925bf1ab978SDwayne Grant McConnell 1926bf1ab978SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 1927bf1ab978SDwayne Grant McConnell return -EFAULT; 1928bf1ab978SDwayne Grant McConnell 1929bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1930bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1931bf1ab978SDwayne Grant McConnell ret = __spufs_dma_info_read(ctx, buf, len, pos); 1932bf1ab978SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 193327b1ea09SChristoph Hellwig spu_release_saved(ctx); 1934bf1ab978SDwayne Grant McConnell 1935bf1ab978SDwayne Grant McConnell return ret; 1936bf1ab978SDwayne Grant McConnell } 1937bf1ab978SDwayne Grant McConnell 19385dfe4c96SArjan van de Ven static const struct file_operations spufs_dma_info_fops = { 1939b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 1940b9e3bd77SDwayne Grant McConnell .read = spufs_dma_info_read, 1941b9e3bd77SDwayne Grant McConnell }; 1942b9e3bd77SDwayne Grant McConnell 1943bf1ab978SDwayne Grant McConnell static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, 1944bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1945b9e3bd77SDwayne Grant McConnell { 1946b9e3bd77SDwayne Grant McConnell struct spu_proxydma_info info; 1947b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *puqp; 1948bf1ab978SDwayne Grant McConnell int ret = sizeof info; 1949b9e3bd77SDwayne Grant McConnell int i; 1950b9e3bd77SDwayne Grant McConnell 1951b9e3bd77SDwayne Grant McConnell if (len < ret) 1952b9e3bd77SDwayne Grant McConnell return -EINVAL; 1953b9e3bd77SDwayne Grant McConnell 1954b9e3bd77SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 1955b9e3bd77SDwayne Grant McConnell return -EFAULT; 1956b9e3bd77SDwayne Grant McConnell 1957b9e3bd77SDwayne Grant McConnell info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; 1958b9e3bd77SDwayne Grant McConnell info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; 1959b9e3bd77SDwayne Grant McConnell info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; 1960b9e3bd77SDwayne Grant McConnell for (i = 0; i < 8; i++) { 1961b9e3bd77SDwayne Grant McConnell qp = &info.proxydma_info_command_data[i]; 1962b9e3bd77SDwayne Grant McConnell puqp = &ctx->csa.priv2.puq[i]; 1963b9e3bd77SDwayne Grant McConnell 1964b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; 1965b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; 1966b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; 1967b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; 1968b9e3bd77SDwayne Grant McConnell } 1969bf1ab978SDwayne Grant McConnell 1970bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 1971bf1ab978SDwayne Grant McConnell sizeof info); 1972bf1ab978SDwayne Grant McConnell } 1973bf1ab978SDwayne Grant McConnell 1974bf1ab978SDwayne Grant McConnell static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, 1975bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 1976bf1ab978SDwayne Grant McConnell { 1977bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1978bf1ab978SDwayne Grant McConnell int ret; 1979bf1ab978SDwayne Grant McConnell 1980bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1981bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1982bf1ab978SDwayne Grant McConnell ret = __spufs_proxydma_info_read(ctx, buf, len, pos); 1983b9e3bd77SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 198427b1ea09SChristoph Hellwig spu_release_saved(ctx); 1985b9e3bd77SDwayne Grant McConnell 1986b9e3bd77SDwayne Grant McConnell return ret; 1987b9e3bd77SDwayne Grant McConnell } 1988b9e3bd77SDwayne Grant McConnell 19895dfe4c96SArjan van de Ven static const struct file_operations spufs_proxydma_info_fops = { 1990b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 1991b9e3bd77SDwayne Grant McConnell .read = spufs_proxydma_info_read, 1992b9e3bd77SDwayne Grant McConnell }; 1993b9e3bd77SDwayne Grant McConnell 1994476273adSChristoph Hellwig static int spufs_show_tid(struct seq_file *s, void *private) 1995476273adSChristoph Hellwig { 1996476273adSChristoph Hellwig struct spu_context *ctx = s->private; 1997476273adSChristoph Hellwig 1998476273adSChristoph Hellwig seq_printf(s, "%d\n", ctx->tid); 1999476273adSChristoph Hellwig return 0; 2000476273adSChristoph Hellwig } 2001476273adSChristoph Hellwig 2002476273adSChristoph Hellwig static int spufs_tid_open(struct inode *inode, struct file *file) 2003476273adSChristoph Hellwig { 2004476273adSChristoph Hellwig return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); 2005476273adSChristoph Hellwig } 2006476273adSChristoph Hellwig 2007476273adSChristoph Hellwig static const struct file_operations spufs_tid_fops = { 2008476273adSChristoph Hellwig .open = spufs_tid_open, 2009476273adSChristoph Hellwig .read = seq_read, 2010476273adSChristoph Hellwig .llseek = seq_lseek, 2011476273adSChristoph Hellwig .release = single_release, 2012476273adSChristoph Hellwig }; 2013476273adSChristoph Hellwig 2014e9f8a0b6SChristoph Hellwig static const char *ctx_state_names[] = { 2015e9f8a0b6SChristoph Hellwig "user", "system", "iowait", "loaded" 2016e9f8a0b6SChristoph Hellwig }; 2017e9f8a0b6SChristoph Hellwig 2018e9f8a0b6SChristoph Hellwig static unsigned long long spufs_acct_time(struct spu_context *ctx, 201927ec41d3SAndre Detsch enum spu_utilization_state state) 2020e9f8a0b6SChristoph Hellwig { 202127ec41d3SAndre Detsch struct timespec ts; 202227ec41d3SAndre Detsch unsigned long long time = ctx->stats.times[state]; 2023e9f8a0b6SChristoph Hellwig 202427ec41d3SAndre Detsch /* 202527ec41d3SAndre Detsch * In general, utilization statistics are updated by the controlling 202627ec41d3SAndre Detsch * thread as the spu context moves through various well defined 202727ec41d3SAndre Detsch * state transitions, but if the context is lazily loaded its 202827ec41d3SAndre Detsch * utilization statistics are not updated as the controlling thread 202927ec41d3SAndre Detsch * is not tightly coupled with the execution of the spu context. We 203027ec41d3SAndre Detsch * calculate and apply the time delta from the last recorded state 203127ec41d3SAndre Detsch * of the spu context. 203227ec41d3SAndre Detsch */ 203327ec41d3SAndre Detsch if (ctx->spu && ctx->stats.util_state == state) { 203427ec41d3SAndre Detsch ktime_get_ts(&ts); 203527ec41d3SAndre Detsch time += timespec_to_ns(&ts) - ctx->stats.tstamp; 203627ec41d3SAndre Detsch } 2037e9f8a0b6SChristoph Hellwig 203827ec41d3SAndre Detsch return time / NSEC_PER_MSEC; 2039e9f8a0b6SChristoph Hellwig } 2040e9f8a0b6SChristoph Hellwig 2041e9f8a0b6SChristoph Hellwig static unsigned long long spufs_slb_flts(struct spu_context *ctx) 2042e9f8a0b6SChristoph Hellwig { 2043e9f8a0b6SChristoph Hellwig unsigned long long slb_flts = ctx->stats.slb_flt; 2044e9f8a0b6SChristoph Hellwig 2045e9f8a0b6SChristoph Hellwig if (ctx->state == SPU_STATE_RUNNABLE) { 2046e9f8a0b6SChristoph Hellwig slb_flts += (ctx->spu->stats.slb_flt - 2047e9f8a0b6SChristoph Hellwig ctx->stats.slb_flt_base); 2048e9f8a0b6SChristoph Hellwig } 2049e9f8a0b6SChristoph Hellwig 2050e9f8a0b6SChristoph Hellwig return slb_flts; 2051e9f8a0b6SChristoph Hellwig } 2052e9f8a0b6SChristoph Hellwig 2053e9f8a0b6SChristoph Hellwig static unsigned long long spufs_class2_intrs(struct spu_context *ctx) 2054e9f8a0b6SChristoph Hellwig { 2055e9f8a0b6SChristoph Hellwig unsigned long long class2_intrs = ctx->stats.class2_intr; 2056e9f8a0b6SChristoph Hellwig 2057e9f8a0b6SChristoph Hellwig if (ctx->state == SPU_STATE_RUNNABLE) { 2058e9f8a0b6SChristoph Hellwig class2_intrs += (ctx->spu->stats.class2_intr - 2059e9f8a0b6SChristoph Hellwig ctx->stats.class2_intr_base); 2060e9f8a0b6SChristoph Hellwig } 2061e9f8a0b6SChristoph Hellwig 2062e9f8a0b6SChristoph Hellwig return class2_intrs; 2063e9f8a0b6SChristoph Hellwig } 2064e9f8a0b6SChristoph Hellwig 2065e9f8a0b6SChristoph Hellwig 2066e9f8a0b6SChristoph Hellwig static int spufs_show_stat(struct seq_file *s, void *private) 2067e9f8a0b6SChristoph Hellwig { 2068e9f8a0b6SChristoph Hellwig struct spu_context *ctx = s->private; 2069e9f8a0b6SChristoph Hellwig 2070e9f8a0b6SChristoph Hellwig spu_acquire(ctx); 2071e9f8a0b6SChristoph Hellwig seq_printf(s, "%s %llu %llu %llu %llu " 2072e9f8a0b6SChristoph Hellwig "%llu %llu %llu %llu %llu %llu %llu %llu\n", 207327ec41d3SAndre Detsch ctx_state_names[ctx->stats.util_state], 207427ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_USER), 207527ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_SYSTEM), 207627ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_IOWAIT), 207727ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), 2078e9f8a0b6SChristoph Hellwig ctx->stats.vol_ctx_switch, 2079e9f8a0b6SChristoph Hellwig ctx->stats.invol_ctx_switch, 2080e9f8a0b6SChristoph Hellwig spufs_slb_flts(ctx), 2081e9f8a0b6SChristoph Hellwig ctx->stats.hash_flt, 2082e9f8a0b6SChristoph Hellwig ctx->stats.min_flt, 2083e9f8a0b6SChristoph Hellwig ctx->stats.maj_flt, 2084e9f8a0b6SChristoph Hellwig spufs_class2_intrs(ctx), 2085e9f8a0b6SChristoph Hellwig ctx->stats.libassist); 2086e9f8a0b6SChristoph Hellwig spu_release(ctx); 2087e9f8a0b6SChristoph Hellwig return 0; 2088e9f8a0b6SChristoph Hellwig } 2089e9f8a0b6SChristoph Hellwig 2090e9f8a0b6SChristoph Hellwig static int spufs_stat_open(struct inode *inode, struct file *file) 2091e9f8a0b6SChristoph Hellwig { 2092e9f8a0b6SChristoph Hellwig return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); 2093e9f8a0b6SChristoph Hellwig } 2094e9f8a0b6SChristoph Hellwig 2095e9f8a0b6SChristoph Hellwig static const struct file_operations spufs_stat_fops = { 2096e9f8a0b6SChristoph Hellwig .open = spufs_stat_open, 2097e9f8a0b6SChristoph Hellwig .read = seq_read, 2098e9f8a0b6SChristoph Hellwig .llseek = seq_lseek, 2099e9f8a0b6SChristoph Hellwig .release = single_release, 2100e9f8a0b6SChristoph Hellwig }; 2101e9f8a0b6SChristoph Hellwig 2102e9f8a0b6SChristoph Hellwig 210367207b96SArnd Bergmann struct tree_descr spufs_dir_contents[] = { 2104cbe709c1SBenjamin Herrenschmidt { "capabilities", &spufs_caps_fops, 0444, }, 210567207b96SArnd Bergmann { "mem", &spufs_mem_fops, 0666, }, 21068b3d6663SArnd Bergmann { "regs", &spufs_regs_fops, 0666, }, 210767207b96SArnd Bergmann { "mbox", &spufs_mbox_fops, 0444, }, 210867207b96SArnd Bergmann { "ibox", &spufs_ibox_fops, 0444, }, 210967207b96SArnd Bergmann { "wbox", &spufs_wbox_fops, 0222, }, 211067207b96SArnd Bergmann { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 211167207b96SArnd Bergmann { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 211267207b96SArnd Bergmann { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 21138b6f50efSJeremy Kerr { "signal1", &spufs_signal1_nosched_fops, 0222, }, 21148b6f50efSJeremy Kerr { "signal2", &spufs_signal2_nosched_fops, 0222, }, 211567207b96SArnd Bergmann { "signal1_type", &spufs_signal1_type, 0666, }, 211667207b96SArnd Bergmann { "signal2_type", &spufs_signal2_type, 0666, }, 21176df10a82SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 21188b3d6663SArnd Bergmann { "fpcr", &spufs_fpcr_fops, 0666, }, 2119b9e3bd77SDwayne Grant McConnell { "lslr", &spufs_lslr_ops, 0444, }, 2120b9e3bd77SDwayne Grant McConnell { "mfc", &spufs_mfc_fops, 0666, }, 2121b9e3bd77SDwayne Grant McConnell { "mss", &spufs_mss_fops, 0666, }, 2122b9e3bd77SDwayne Grant McConnell { "npc", &spufs_npc_ops, 0666, }, 2123b9e3bd77SDwayne Grant McConnell { "srr0", &spufs_srr0_ops, 0666, }, 21248b3d6663SArnd Bergmann { "decr", &spufs_decr_ops, 0666, }, 21258b3d6663SArnd Bergmann { "decr_status", &spufs_decr_status_ops, 0666, }, 21268b3d6663SArnd Bergmann { "event_mask", &spufs_event_mask_ops, 0666, }, 2127b9e3bd77SDwayne Grant McConnell { "event_status", &spufs_event_status_ops, 0444, }, 212827d5bf2aSBenjamin Herrenschmidt { "psmap", &spufs_psmap_fops, 0666, }, 212986767277SArnd Bergmann { "phys-id", &spufs_id_ops, 0666, }, 213086767277SArnd Bergmann { "object-id", &spufs_object_id_ops, 0666, }, 213169a2f00cSDwayne Grant McConnell { "mbox_info", &spufs_mbox_info_fops, 0444, }, 213269a2f00cSDwayne Grant McConnell { "ibox_info", &spufs_ibox_info_fops, 0444, }, 213369a2f00cSDwayne Grant McConnell { "wbox_info", &spufs_wbox_info_fops, 0444, }, 2134b9e3bd77SDwayne Grant McConnell { "dma_info", &spufs_dma_info_fops, 0444, }, 2135b9e3bd77SDwayne Grant McConnell { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, 2136476273adSChristoph Hellwig { "tid", &spufs_tid_fops, 0444, }, 2137e9f8a0b6SChristoph Hellwig { "stat", &spufs_stat_fops, 0444, }, 213867207b96SArnd Bergmann {}, 213967207b96SArnd Bergmann }; 21405737edd1SMark Nutter 21415737edd1SMark Nutter struct tree_descr spufs_dir_nosched_contents[] = { 2142cbe709c1SBenjamin Herrenschmidt { "capabilities", &spufs_caps_fops, 0444, }, 21435737edd1SMark Nutter { "mem", &spufs_mem_fops, 0666, }, 21445737edd1SMark Nutter { "mbox", &spufs_mbox_fops, 0444, }, 21455737edd1SMark Nutter { "ibox", &spufs_ibox_fops, 0444, }, 21465737edd1SMark Nutter { "wbox", &spufs_wbox_fops, 0222, }, 21475737edd1SMark Nutter { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 21485737edd1SMark Nutter { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 21495737edd1SMark Nutter { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 2150d054b36fSJeremy Kerr { "signal1", &spufs_signal1_nosched_fops, 0222, }, 2151d054b36fSJeremy Kerr { "signal2", &spufs_signal2_nosched_fops, 0222, }, 21525737edd1SMark Nutter { "signal1_type", &spufs_signal1_type, 0666, }, 21535737edd1SMark Nutter { "signal2_type", &spufs_signal2_type, 0666, }, 21545737edd1SMark Nutter { "mss", &spufs_mss_fops, 0666, }, 21555737edd1SMark Nutter { "mfc", &spufs_mfc_fops, 0666, }, 21565737edd1SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 21575737edd1SMark Nutter { "npc", &spufs_npc_ops, 0666, }, 21585737edd1SMark Nutter { "psmap", &spufs_psmap_fops, 0666, }, 21595737edd1SMark Nutter { "phys-id", &spufs_id_ops, 0666, }, 21605737edd1SMark Nutter { "object-id", &spufs_object_id_ops, 0666, }, 2161476273adSChristoph Hellwig { "tid", &spufs_tid_fops, 0444, }, 2162e9f8a0b6SChristoph Hellwig { "stat", &spufs_stat_fops, 0444, }, 21635737edd1SMark Nutter {}, 21645737edd1SMark Nutter }; 2165bf1ab978SDwayne Grant McConnell 2166bf1ab978SDwayne Grant McConnell struct spufs_coredump_reader spufs_coredump_read[] = { 21674fca9c42SMichael Ellerman { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, 21684fca9c42SMichael Ellerman { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, 2169104f0cc2SMichael Ellerman { "lslr", NULL, spufs_lslr_get, 19 }, 2170104f0cc2SMichael Ellerman { "decr", NULL, spufs_decr_get, 19 }, 2171104f0cc2SMichael Ellerman { "decr_status", NULL, spufs_decr_status_get, 19 }, 21724fca9c42SMichael Ellerman { "mem", __spufs_mem_read, NULL, LS_SIZE, }, 21734fca9c42SMichael Ellerman { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, 2174104f0cc2SMichael Ellerman { "signal1_type", NULL, spufs_signal1_type_get, 19 }, 21754fca9c42SMichael Ellerman { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, 2176104f0cc2SMichael Ellerman { "signal2_type", NULL, spufs_signal2_type_get, 19 }, 2177104f0cc2SMichael Ellerman { "event_mask", NULL, spufs_event_mask_get, 19 }, 2178104f0cc2SMichael Ellerman { "event_status", NULL, spufs_event_status_get, 19 }, 21794fca9c42SMichael Ellerman { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, 21804fca9c42SMichael Ellerman { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, 21814fca9c42SMichael Ellerman { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, 21824fca9c42SMichael Ellerman { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, 21834fca9c42SMichael Ellerman { "proxydma_info", __spufs_proxydma_info_read, 21844fca9c42SMichael Ellerman NULL, sizeof(struct spu_proxydma_info)}, 2185104f0cc2SMichael Ellerman { "object-id", NULL, spufs_object_id_get, 19 }, 2186104f0cc2SMichael Ellerman { "npc", NULL, spufs_npc_get, 19 }, 2187936d5bf1SMichael Ellerman { NULL }, 2188bf1ab978SDwayne Grant McConnell }; 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