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 107967207b96SArnd Bergmann static void spufs_signal1_type_set(void *data, u64 val) 108067207b96SArnd Bergmann { 108167207b96SArnd Bergmann struct spu_context *ctx = data; 108267207b96SArnd Bergmann 10838b3d6663SArnd Bergmann spu_acquire(ctx); 10848b3d6663SArnd Bergmann ctx->ops->signal1_type_set(ctx, val); 10858b3d6663SArnd Bergmann spu_release(ctx); 108667207b96SArnd Bergmann } 108767207b96SArnd Bergmann 108874de08bcSMichael Ellerman static u64 __spufs_signal1_type_get(struct spu_context *ctx) 1089bf1ab978SDwayne Grant McConnell { 1090bf1ab978SDwayne Grant McConnell return ctx->ops->signal1_type_get(ctx); 1091bf1ab978SDwayne Grant McConnell } 1092bf1ab978SDwayne Grant McConnell 109367207b96SArnd Bergmann static u64 spufs_signal1_type_get(void *data) 109467207b96SArnd Bergmann { 109567207b96SArnd Bergmann struct spu_context *ctx = data; 10968b3d6663SArnd Bergmann u64 ret; 10978b3d6663SArnd Bergmann 10988b3d6663SArnd Bergmann spu_acquire(ctx); 109974de08bcSMichael Ellerman ret = __spufs_signal1_type_get(ctx); 11008b3d6663SArnd Bergmann spu_release(ctx); 11018b3d6663SArnd Bergmann 11028b3d6663SArnd Bergmann return ret; 110367207b96SArnd Bergmann } 110467207b96SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, 110567207b96SArnd Bergmann spufs_signal1_type_set, "%llu"); 110667207b96SArnd Bergmann 110767207b96SArnd Bergmann static void spufs_signal2_type_set(void *data, u64 val) 110867207b96SArnd Bergmann { 110967207b96SArnd Bergmann struct spu_context *ctx = data; 111067207b96SArnd Bergmann 11118b3d6663SArnd Bergmann spu_acquire(ctx); 11128b3d6663SArnd Bergmann ctx->ops->signal2_type_set(ctx, val); 11138b3d6663SArnd Bergmann spu_release(ctx); 111467207b96SArnd Bergmann } 111567207b96SArnd Bergmann 111674de08bcSMichael Ellerman static u64 __spufs_signal2_type_get(struct spu_context *ctx) 1117bf1ab978SDwayne Grant McConnell { 1118bf1ab978SDwayne Grant McConnell return ctx->ops->signal2_type_get(ctx); 1119bf1ab978SDwayne Grant McConnell } 1120bf1ab978SDwayne Grant McConnell 112167207b96SArnd Bergmann static u64 spufs_signal2_type_get(void *data) 112267207b96SArnd Bergmann { 112367207b96SArnd Bergmann struct spu_context *ctx = data; 11248b3d6663SArnd Bergmann u64 ret; 11258b3d6663SArnd Bergmann 11268b3d6663SArnd Bergmann spu_acquire(ctx); 112774de08bcSMichael Ellerman ret = __spufs_signal2_type_get(ctx); 11288b3d6663SArnd Bergmann spu_release(ctx); 11298b3d6663SArnd Bergmann 11308b3d6663SArnd Bergmann return ret; 113167207b96SArnd Bergmann } 113267207b96SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, 113367207b96SArnd Bergmann spufs_signal2_type_set, "%llu"); 113467207b96SArnd Bergmann 113527d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 113678bde53eSBenjamin Herrenschmidt static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma, 113778bde53eSBenjamin Herrenschmidt unsigned long address) 1138d9379c4bSarnd@arndb.de { 113978bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x1000); 1140d9379c4bSarnd@arndb.de } 1141d9379c4bSarnd@arndb.de 1142d9379c4bSarnd@arndb.de static struct vm_operations_struct spufs_mss_mmap_vmops = { 114378bde53eSBenjamin Herrenschmidt .nopfn = spufs_mss_mmap_nopfn, 1144d9379c4bSarnd@arndb.de }; 1145d9379c4bSarnd@arndb.de 1146d9379c4bSarnd@arndb.de /* 1147d9379c4bSarnd@arndb.de * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 1148d9379c4bSarnd@arndb.de */ 1149d9379c4bSarnd@arndb.de static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) 1150d9379c4bSarnd@arndb.de { 1151d9379c4bSarnd@arndb.de if (!(vma->vm_flags & VM_SHARED)) 1152d9379c4bSarnd@arndb.de return -EINVAL; 1153d9379c4bSarnd@arndb.de 115478bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 1155d9379c4bSarnd@arndb.de vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 115623cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 1157d9379c4bSarnd@arndb.de 1158d9379c4bSarnd@arndb.de vma->vm_ops = &spufs_mss_mmap_vmops; 1159d9379c4bSarnd@arndb.de return 0; 1160d9379c4bSarnd@arndb.de } 116127d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 116227d5bf2aSBenjamin Herrenschmidt #define spufs_mss_mmap NULL 116327d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1164d9379c4bSarnd@arndb.de 1165d9379c4bSarnd@arndb.de static int spufs_mss_open(struct inode *inode, struct file *file) 1166d9379c4bSarnd@arndb.de { 1167d9379c4bSarnd@arndb.de struct spufs_inode_info *i = SPUFS_I(inode); 116817e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 1169d9379c4bSarnd@arndb.de 1170d9379c4bSarnd@arndb.de file->private_data = i->i_ctx; 117143c2bbd9SChristoph Hellwig 117247d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 117343c2bbd9SChristoph Hellwig if (!i->i_openers++) 117417e0e270SBenjamin Herrenschmidt ctx->mss = inode->i_mapping; 117547d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 1176d9379c4bSarnd@arndb.de return nonseekable_open(inode, file); 1177d9379c4bSarnd@arndb.de } 1178d9379c4bSarnd@arndb.de 117943c2bbd9SChristoph Hellwig static int 118043c2bbd9SChristoph Hellwig spufs_mss_release(struct inode *inode, struct file *file) 118143c2bbd9SChristoph Hellwig { 118243c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 118343c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 118443c2bbd9SChristoph Hellwig 118547d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 118643c2bbd9SChristoph Hellwig if (!--i->i_openers) 118743c2bbd9SChristoph Hellwig ctx->mss = NULL; 118847d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 118943c2bbd9SChristoph Hellwig return 0; 119043c2bbd9SChristoph Hellwig } 119143c2bbd9SChristoph Hellwig 11925dfe4c96SArjan van de Ven static const struct file_operations spufs_mss_fops = { 1193d9379c4bSarnd@arndb.de .open = spufs_mss_open, 119443c2bbd9SChristoph Hellwig .release = spufs_mss_release, 1195d9379c4bSarnd@arndb.de .mmap = spufs_mss_mmap, 119627d5bf2aSBenjamin Herrenschmidt }; 119727d5bf2aSBenjamin Herrenschmidt 119878bde53eSBenjamin Herrenschmidt static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma, 119978bde53eSBenjamin Herrenschmidt unsigned long address) 120027d5bf2aSBenjamin Herrenschmidt { 120178bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x20000); 120227d5bf2aSBenjamin Herrenschmidt } 120327d5bf2aSBenjamin Herrenschmidt 120427d5bf2aSBenjamin Herrenschmidt static struct vm_operations_struct spufs_psmap_mmap_vmops = { 120578bde53eSBenjamin Herrenschmidt .nopfn = spufs_psmap_mmap_nopfn, 120627d5bf2aSBenjamin Herrenschmidt }; 120727d5bf2aSBenjamin Herrenschmidt 120827d5bf2aSBenjamin Herrenschmidt /* 120927d5bf2aSBenjamin Herrenschmidt * mmap support for full problem state area [0x00000 - 0x1ffff]. 121027d5bf2aSBenjamin Herrenschmidt */ 121127d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) 121227d5bf2aSBenjamin Herrenschmidt { 121327d5bf2aSBenjamin Herrenschmidt if (!(vma->vm_flags & VM_SHARED)) 121427d5bf2aSBenjamin Herrenschmidt return -EINVAL; 121527d5bf2aSBenjamin Herrenschmidt 121678bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 121727d5bf2aSBenjamin Herrenschmidt vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 121827d5bf2aSBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 121927d5bf2aSBenjamin Herrenschmidt 122027d5bf2aSBenjamin Herrenschmidt vma->vm_ops = &spufs_psmap_mmap_vmops; 122127d5bf2aSBenjamin Herrenschmidt return 0; 122227d5bf2aSBenjamin Herrenschmidt } 122327d5bf2aSBenjamin Herrenschmidt 122427d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_open(struct inode *inode, struct file *file) 122527d5bf2aSBenjamin Herrenschmidt { 122627d5bf2aSBenjamin Herrenschmidt struct spufs_inode_info *i = SPUFS_I(inode); 122717e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 122827d5bf2aSBenjamin Herrenschmidt 122947d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 123027d5bf2aSBenjamin Herrenschmidt file->private_data = i->i_ctx; 123143c2bbd9SChristoph Hellwig if (!i->i_openers++) 123217e0e270SBenjamin Herrenschmidt ctx->psmap = inode->i_mapping; 123347d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 123427d5bf2aSBenjamin Herrenschmidt return nonseekable_open(inode, file); 123527d5bf2aSBenjamin Herrenschmidt } 123627d5bf2aSBenjamin Herrenschmidt 123743c2bbd9SChristoph Hellwig static int 123843c2bbd9SChristoph Hellwig spufs_psmap_release(struct inode *inode, struct file *file) 123943c2bbd9SChristoph Hellwig { 124043c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 124143c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 124243c2bbd9SChristoph Hellwig 124347d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 124443c2bbd9SChristoph Hellwig if (!--i->i_openers) 124543c2bbd9SChristoph Hellwig ctx->psmap = NULL; 124647d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 124743c2bbd9SChristoph Hellwig return 0; 124843c2bbd9SChristoph Hellwig } 124943c2bbd9SChristoph Hellwig 12505dfe4c96SArjan van de Ven static const struct file_operations spufs_psmap_fops = { 125127d5bf2aSBenjamin Herrenschmidt .open = spufs_psmap_open, 125243c2bbd9SChristoph Hellwig .release = spufs_psmap_release, 125327d5bf2aSBenjamin Herrenschmidt .mmap = spufs_psmap_mmap, 1254d9379c4bSarnd@arndb.de }; 1255d9379c4bSarnd@arndb.de 1256d9379c4bSarnd@arndb.de 125727d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 125878bde53eSBenjamin Herrenschmidt static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma, 125978bde53eSBenjamin Herrenschmidt unsigned long address) 12606df10a82SMark Nutter { 126178bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x3000, 0x1000); 12626df10a82SMark Nutter } 12636df10a82SMark Nutter 12646df10a82SMark Nutter static struct vm_operations_struct spufs_mfc_mmap_vmops = { 126578bde53eSBenjamin Herrenschmidt .nopfn = spufs_mfc_mmap_nopfn, 12666df10a82SMark Nutter }; 12676df10a82SMark Nutter 12686df10a82SMark Nutter /* 12696df10a82SMark Nutter * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 12706df10a82SMark Nutter */ 12716df10a82SMark Nutter static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) 12726df10a82SMark Nutter { 12736df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 12746df10a82SMark Nutter return -EINVAL; 12756df10a82SMark Nutter 127678bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 12776df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 127823cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 12796df10a82SMark Nutter 12806df10a82SMark Nutter vma->vm_ops = &spufs_mfc_mmap_vmops; 12816df10a82SMark Nutter return 0; 12826df10a82SMark Nutter } 128327d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 128427d5bf2aSBenjamin Herrenschmidt #define spufs_mfc_mmap NULL 128527d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1286a33a7d73SArnd Bergmann 1287a33a7d73SArnd Bergmann static int spufs_mfc_open(struct inode *inode, struct file *file) 1288a33a7d73SArnd Bergmann { 1289a33a7d73SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 1290a33a7d73SArnd Bergmann struct spu_context *ctx = i->i_ctx; 1291a33a7d73SArnd Bergmann 1292a33a7d73SArnd Bergmann /* we don't want to deal with DMA into other processes */ 1293a33a7d73SArnd Bergmann if (ctx->owner != current->mm) 1294a33a7d73SArnd Bergmann return -EINVAL; 1295a33a7d73SArnd Bergmann 1296a33a7d73SArnd Bergmann if (atomic_read(&inode->i_count) != 1) 1297a33a7d73SArnd Bergmann return -EBUSY; 1298a33a7d73SArnd Bergmann 129947d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 1300a33a7d73SArnd Bergmann file->private_data = ctx; 130143c2bbd9SChristoph Hellwig if (!i->i_openers++) 130217e0e270SBenjamin Herrenschmidt ctx->mfc = inode->i_mapping; 130347d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 1304a33a7d73SArnd Bergmann return nonseekable_open(inode, file); 1305a33a7d73SArnd Bergmann } 1306a33a7d73SArnd Bergmann 130743c2bbd9SChristoph Hellwig static int 130843c2bbd9SChristoph Hellwig spufs_mfc_release(struct inode *inode, struct file *file) 130943c2bbd9SChristoph Hellwig { 131043c2bbd9SChristoph Hellwig struct spufs_inode_info *i = SPUFS_I(inode); 131143c2bbd9SChristoph Hellwig struct spu_context *ctx = i->i_ctx; 131243c2bbd9SChristoph Hellwig 131347d3a5faSChristoph Hellwig mutex_lock(&ctx->mapping_lock); 131443c2bbd9SChristoph Hellwig if (!--i->i_openers) 131543c2bbd9SChristoph Hellwig ctx->mfc = NULL; 131647d3a5faSChristoph Hellwig mutex_unlock(&ctx->mapping_lock); 131743c2bbd9SChristoph Hellwig return 0; 131843c2bbd9SChristoph Hellwig } 131943c2bbd9SChristoph Hellwig 1320a33a7d73SArnd Bergmann /* interrupt-level mfc callback function. */ 1321a33a7d73SArnd Bergmann void spufs_mfc_callback(struct spu *spu) 1322a33a7d73SArnd Bergmann { 1323a33a7d73SArnd Bergmann struct spu_context *ctx = spu->ctx; 1324a33a7d73SArnd Bergmann 1325a33a7d73SArnd Bergmann wake_up_all(&ctx->mfc_wq); 1326a33a7d73SArnd Bergmann 1327a33a7d73SArnd Bergmann pr_debug("%s %s\n", __FUNCTION__, spu->name); 1328a33a7d73SArnd Bergmann if (ctx->mfc_fasync) { 1329a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1330a33a7d73SArnd Bergmann unsigned int mask; 1331a33a7d73SArnd Bergmann 1332a33a7d73SArnd Bergmann /* no need for spu_acquire in interrupt context */ 1333a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1334a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1335a33a7d73SArnd Bergmann 1336a33a7d73SArnd Bergmann mask = 0; 1337a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1338a33a7d73SArnd Bergmann mask |= POLLOUT; 1339a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1340a33a7d73SArnd Bergmann mask |= POLLIN; 1341a33a7d73SArnd Bergmann 1342a33a7d73SArnd Bergmann kill_fasync(&ctx->mfc_fasync, SIGIO, mask); 1343a33a7d73SArnd Bergmann } 1344a33a7d73SArnd Bergmann } 1345a33a7d73SArnd Bergmann 1346a33a7d73SArnd Bergmann static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) 1347a33a7d73SArnd Bergmann { 1348a33a7d73SArnd Bergmann /* See if there is one tag group is complete */ 1349a33a7d73SArnd Bergmann /* FIXME we need locking around tagwait */ 1350a33a7d73SArnd Bergmann *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; 1351a33a7d73SArnd Bergmann ctx->tagwait &= ~*status; 1352a33a7d73SArnd Bergmann if (*status) 1353a33a7d73SArnd Bergmann return 1; 1354a33a7d73SArnd Bergmann 1355a33a7d73SArnd Bergmann /* enable interrupt waiting for any tag group, 1356a33a7d73SArnd Bergmann may silently fail if interrupts are already enabled */ 1357a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1358a33a7d73SArnd Bergmann return 0; 1359a33a7d73SArnd Bergmann } 1360a33a7d73SArnd Bergmann 1361a33a7d73SArnd Bergmann static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, 1362a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1363a33a7d73SArnd Bergmann { 1364a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1365a33a7d73SArnd Bergmann int ret = -EINVAL; 1366a33a7d73SArnd Bergmann u32 status; 1367a33a7d73SArnd Bergmann 1368a33a7d73SArnd Bergmann if (size != 4) 1369a33a7d73SArnd Bergmann goto out; 1370a33a7d73SArnd Bergmann 1371a33a7d73SArnd Bergmann spu_acquire(ctx); 1372a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1373a33a7d73SArnd Bergmann status = ctx->ops->read_mfc_tagstatus(ctx); 1374a33a7d73SArnd Bergmann if (!(status & ctx->tagwait)) 1375a33a7d73SArnd Bergmann ret = -EAGAIN; 1376a33a7d73SArnd Bergmann else 1377a33a7d73SArnd Bergmann ctx->tagwait &= ~status; 1378a33a7d73SArnd Bergmann } else { 1379a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1380a33a7d73SArnd Bergmann spufs_read_mfc_tagstatus(ctx, &status)); 1381a33a7d73SArnd Bergmann } 1382a33a7d73SArnd Bergmann spu_release(ctx); 1383a33a7d73SArnd Bergmann 1384a33a7d73SArnd Bergmann if (ret) 1385a33a7d73SArnd Bergmann goto out; 1386a33a7d73SArnd Bergmann 1387a33a7d73SArnd Bergmann ret = 4; 1388a33a7d73SArnd Bergmann if (copy_to_user(buffer, &status, 4)) 1389a33a7d73SArnd Bergmann ret = -EFAULT; 1390a33a7d73SArnd Bergmann 1391a33a7d73SArnd Bergmann out: 1392a33a7d73SArnd Bergmann return ret; 1393a33a7d73SArnd Bergmann } 1394a33a7d73SArnd Bergmann 1395a33a7d73SArnd Bergmann static int spufs_check_valid_dma(struct mfc_dma_command *cmd) 1396a33a7d73SArnd Bergmann { 1397a33a7d73SArnd Bergmann pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, 1398a33a7d73SArnd Bergmann cmd->ea, cmd->size, cmd->tag, cmd->cmd); 1399a33a7d73SArnd Bergmann 1400a33a7d73SArnd Bergmann switch (cmd->cmd) { 1401a33a7d73SArnd Bergmann case MFC_PUT_CMD: 1402a33a7d73SArnd Bergmann case MFC_PUTF_CMD: 1403a33a7d73SArnd Bergmann case MFC_PUTB_CMD: 1404a33a7d73SArnd Bergmann case MFC_GET_CMD: 1405a33a7d73SArnd Bergmann case MFC_GETF_CMD: 1406a33a7d73SArnd Bergmann case MFC_GETB_CMD: 1407a33a7d73SArnd Bergmann break; 1408a33a7d73SArnd Bergmann default: 1409a33a7d73SArnd Bergmann pr_debug("invalid DMA opcode %x\n", cmd->cmd); 1410a33a7d73SArnd Bergmann return -EIO; 1411a33a7d73SArnd Bergmann } 1412a33a7d73SArnd Bergmann 1413a33a7d73SArnd Bergmann if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { 1414a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment, ea %lx lsa %x\n", 1415a33a7d73SArnd Bergmann cmd->ea, cmd->lsa); 1416a33a7d73SArnd Bergmann return -EIO; 1417a33a7d73SArnd Bergmann } 1418a33a7d73SArnd Bergmann 1419a33a7d73SArnd Bergmann switch (cmd->size & 0xf) { 1420a33a7d73SArnd Bergmann case 1: 1421a33a7d73SArnd Bergmann break; 1422a33a7d73SArnd Bergmann case 2: 1423a33a7d73SArnd Bergmann if (cmd->lsa & 1) 1424a33a7d73SArnd Bergmann goto error; 1425a33a7d73SArnd Bergmann break; 1426a33a7d73SArnd Bergmann case 4: 1427a33a7d73SArnd Bergmann if (cmd->lsa & 3) 1428a33a7d73SArnd Bergmann goto error; 1429a33a7d73SArnd Bergmann break; 1430a33a7d73SArnd Bergmann case 8: 1431a33a7d73SArnd Bergmann if (cmd->lsa & 7) 1432a33a7d73SArnd Bergmann goto error; 1433a33a7d73SArnd Bergmann break; 1434a33a7d73SArnd Bergmann case 0: 1435a33a7d73SArnd Bergmann if (cmd->lsa & 15) 1436a33a7d73SArnd Bergmann goto error; 1437a33a7d73SArnd Bergmann break; 1438a33a7d73SArnd Bergmann error: 1439a33a7d73SArnd Bergmann default: 1440a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment %x for size %x\n", 1441a33a7d73SArnd Bergmann cmd->lsa & 0xf, cmd->size); 1442a33a7d73SArnd Bergmann return -EIO; 1443a33a7d73SArnd Bergmann } 1444a33a7d73SArnd Bergmann 1445a33a7d73SArnd Bergmann if (cmd->size > 16 * 1024) { 1446a33a7d73SArnd Bergmann pr_debug("invalid DMA size %x\n", cmd->size); 1447a33a7d73SArnd Bergmann return -EIO; 1448a33a7d73SArnd Bergmann } 1449a33a7d73SArnd Bergmann 1450a33a7d73SArnd Bergmann if (cmd->tag & 0xfff0) { 1451a33a7d73SArnd Bergmann /* we reserve the higher tag numbers for kernel use */ 1452a33a7d73SArnd Bergmann pr_debug("invalid DMA tag\n"); 1453a33a7d73SArnd Bergmann return -EIO; 1454a33a7d73SArnd Bergmann } 1455a33a7d73SArnd Bergmann 1456a33a7d73SArnd Bergmann if (cmd->class) { 1457a33a7d73SArnd Bergmann /* not supported in this version */ 1458a33a7d73SArnd Bergmann pr_debug("invalid DMA class\n"); 1459a33a7d73SArnd Bergmann return -EIO; 1460a33a7d73SArnd Bergmann } 1461a33a7d73SArnd Bergmann 1462a33a7d73SArnd Bergmann return 0; 1463a33a7d73SArnd Bergmann } 1464a33a7d73SArnd Bergmann 1465a33a7d73SArnd Bergmann static int spu_send_mfc_command(struct spu_context *ctx, 1466a33a7d73SArnd Bergmann struct mfc_dma_command cmd, 1467a33a7d73SArnd Bergmann int *error) 1468a33a7d73SArnd Bergmann { 1469a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1470a33a7d73SArnd Bergmann if (*error == -EAGAIN) { 1471a33a7d73SArnd Bergmann /* wait for any tag group to complete 1472a33a7d73SArnd Bergmann so we have space for the new command */ 1473a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1474a33a7d73SArnd Bergmann /* try again, because the queue might be 1475a33a7d73SArnd Bergmann empty again */ 1476a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1477a33a7d73SArnd Bergmann if (*error == -EAGAIN) 1478a33a7d73SArnd Bergmann return 0; 1479a33a7d73SArnd Bergmann } 1480a33a7d73SArnd Bergmann return 1; 1481a33a7d73SArnd Bergmann } 1482a33a7d73SArnd Bergmann 1483a33a7d73SArnd Bergmann static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, 1484a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1485a33a7d73SArnd Bergmann { 1486a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1487a33a7d73SArnd Bergmann struct mfc_dma_command cmd; 1488a33a7d73SArnd Bergmann int ret = -EINVAL; 1489a33a7d73SArnd Bergmann 1490a33a7d73SArnd Bergmann if (size != sizeof cmd) 1491a33a7d73SArnd Bergmann goto out; 1492a33a7d73SArnd Bergmann 1493a33a7d73SArnd Bergmann ret = -EFAULT; 1494a33a7d73SArnd Bergmann if (copy_from_user(&cmd, buffer, sizeof cmd)) 1495a33a7d73SArnd Bergmann goto out; 1496a33a7d73SArnd Bergmann 1497a33a7d73SArnd Bergmann ret = spufs_check_valid_dma(&cmd); 1498a33a7d73SArnd Bergmann if (ret) 1499a33a7d73SArnd Bergmann goto out; 1500a33a7d73SArnd Bergmann 1501577f8f10SAkinobu Mita ret = spu_acquire_runnable(ctx, 0); 1502577f8f10SAkinobu Mita if (ret) 1503577f8f10SAkinobu Mita goto out; 1504577f8f10SAkinobu Mita 1505a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1506a33a7d73SArnd Bergmann ret = ctx->ops->send_mfc_command(ctx, &cmd); 1507a33a7d73SArnd Bergmann } else { 1508a33a7d73SArnd Bergmann int status; 1509a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1510a33a7d73SArnd Bergmann spu_send_mfc_command(ctx, cmd, &status)); 1511a33a7d73SArnd Bergmann if (status) 1512a33a7d73SArnd Bergmann ret = status; 1513a33a7d73SArnd Bergmann } 1514a33a7d73SArnd Bergmann 1515a33a7d73SArnd Bergmann if (ret) 1516933b0e35SKazunori Asayama goto out_unlock; 1517a33a7d73SArnd Bergmann 1518a33a7d73SArnd Bergmann ctx->tagwait |= 1 << cmd.tag; 15193692dc66SMasato Noguchi ret = size; 1520a33a7d73SArnd Bergmann 1521933b0e35SKazunori Asayama out_unlock: 1522933b0e35SKazunori Asayama spu_release(ctx); 1523a33a7d73SArnd Bergmann out: 1524a33a7d73SArnd Bergmann return ret; 1525a33a7d73SArnd Bergmann } 1526a33a7d73SArnd Bergmann 1527a33a7d73SArnd Bergmann static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) 1528a33a7d73SArnd Bergmann { 1529a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1530a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1531a33a7d73SArnd Bergmann unsigned int mask; 1532a33a7d73SArnd Bergmann 1533933b0e35SKazunori Asayama poll_wait(file, &ctx->mfc_wq, wait); 1534933b0e35SKazunori Asayama 1535a33a7d73SArnd Bergmann spu_acquire(ctx); 1536a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); 1537a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1538a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1539a33a7d73SArnd Bergmann spu_release(ctx); 1540a33a7d73SArnd Bergmann 1541a33a7d73SArnd Bergmann mask = 0; 1542a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1543a33a7d73SArnd Bergmann mask |= POLLOUT | POLLWRNORM; 1544a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1545a33a7d73SArnd Bergmann mask |= POLLIN | POLLRDNORM; 1546a33a7d73SArnd Bergmann 1547a33a7d73SArnd Bergmann pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, 1548a33a7d73SArnd Bergmann free_elements, tagstatus, ctx->tagwait); 1549a33a7d73SArnd Bergmann 1550a33a7d73SArnd Bergmann return mask; 1551a33a7d73SArnd Bergmann } 1552a33a7d73SArnd Bergmann 155373b6af8aSAl Viro static int spufs_mfc_flush(struct file *file, fl_owner_t id) 1554a33a7d73SArnd Bergmann { 1555a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1556a33a7d73SArnd Bergmann int ret; 1557a33a7d73SArnd Bergmann 1558a33a7d73SArnd Bergmann spu_acquire(ctx); 1559a33a7d73SArnd Bergmann #if 0 1560a33a7d73SArnd Bergmann /* this currently hangs */ 1561a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1562a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); 1563a33a7d73SArnd Bergmann if (ret) 1564a33a7d73SArnd Bergmann goto out; 1565a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1566a33a7d73SArnd Bergmann ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); 1567a33a7d73SArnd Bergmann out: 1568a33a7d73SArnd Bergmann #else 1569a33a7d73SArnd Bergmann ret = 0; 1570a33a7d73SArnd Bergmann #endif 1571a33a7d73SArnd Bergmann spu_release(ctx); 1572a33a7d73SArnd Bergmann 1573a33a7d73SArnd Bergmann return ret; 1574a33a7d73SArnd Bergmann } 1575a33a7d73SArnd Bergmann 1576a33a7d73SArnd Bergmann static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, 1577a33a7d73SArnd Bergmann int datasync) 1578a33a7d73SArnd Bergmann { 157973b6af8aSAl Viro return spufs_mfc_flush(file, NULL); 1580a33a7d73SArnd Bergmann } 1581a33a7d73SArnd Bergmann 1582a33a7d73SArnd Bergmann static int spufs_mfc_fasync(int fd, struct file *file, int on) 1583a33a7d73SArnd Bergmann { 1584a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1585a33a7d73SArnd Bergmann 1586a33a7d73SArnd Bergmann return fasync_helper(fd, file, on, &ctx->mfc_fasync); 1587a33a7d73SArnd Bergmann } 1588a33a7d73SArnd Bergmann 15895dfe4c96SArjan van de Ven static const struct file_operations spufs_mfc_fops = { 1590a33a7d73SArnd Bergmann .open = spufs_mfc_open, 159143c2bbd9SChristoph Hellwig .release = spufs_mfc_release, 1592a33a7d73SArnd Bergmann .read = spufs_mfc_read, 1593a33a7d73SArnd Bergmann .write = spufs_mfc_write, 1594a33a7d73SArnd Bergmann .poll = spufs_mfc_poll, 1595a33a7d73SArnd Bergmann .flush = spufs_mfc_flush, 1596a33a7d73SArnd Bergmann .fsync = spufs_mfc_fsync, 1597a33a7d73SArnd Bergmann .fasync = spufs_mfc_fasync, 15986df10a82SMark Nutter .mmap = spufs_mfc_mmap, 1599a33a7d73SArnd Bergmann }; 1600a33a7d73SArnd Bergmann 160167207b96SArnd Bergmann static void spufs_npc_set(void *data, u64 val) 160267207b96SArnd Bergmann { 160367207b96SArnd Bergmann struct spu_context *ctx = data; 16048b3d6663SArnd Bergmann spu_acquire(ctx); 16058b3d6663SArnd Bergmann ctx->ops->npc_write(ctx, val); 16068b3d6663SArnd Bergmann spu_release(ctx); 160767207b96SArnd Bergmann } 160867207b96SArnd Bergmann 160978810ff6SMichael Ellerman static u64 __spufs_npc_get(struct spu_context *ctx) 161078810ff6SMichael Ellerman { 161178810ff6SMichael Ellerman return ctx->ops->npc_read(ctx); 161278810ff6SMichael Ellerman } 161378810ff6SMichael Ellerman 161467207b96SArnd Bergmann static u64 spufs_npc_get(void *data) 161567207b96SArnd Bergmann { 161667207b96SArnd Bergmann struct spu_context *ctx = data; 161767207b96SArnd Bergmann u64 ret; 16188b3d6663SArnd Bergmann spu_acquire(ctx); 161978810ff6SMichael Ellerman ret = __spufs_npc_get(ctx); 16208b3d6663SArnd Bergmann spu_release(ctx); 162167207b96SArnd Bergmann return ret; 162267207b96SArnd Bergmann } 16239b5047e2SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, 16249b5047e2SDwayne Grant McConnell "0x%llx\n") 162567207b96SArnd Bergmann 16268b3d6663SArnd Bergmann static void spufs_decr_set(void *data, u64 val) 16278b3d6663SArnd Bergmann { 16288b3d6663SArnd Bergmann struct spu_context *ctx = data; 16298b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 16308b3d6663SArnd Bergmann spu_acquire_saved(ctx); 16318b3d6663SArnd Bergmann lscsa->decr.slot[0] = (u32) val; 163227b1ea09SChristoph Hellwig spu_release_saved(ctx); 16338b3d6663SArnd Bergmann } 16348b3d6663SArnd Bergmann 163574de08bcSMichael Ellerman static u64 __spufs_decr_get(struct spu_context *ctx) 16368b3d6663SArnd Bergmann { 16378b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1638bf1ab978SDwayne Grant McConnell return lscsa->decr.slot[0]; 1639bf1ab978SDwayne Grant McConnell } 1640bf1ab978SDwayne Grant McConnell 1641bf1ab978SDwayne Grant McConnell static u64 spufs_decr_get(void *data) 1642bf1ab978SDwayne Grant McConnell { 1643bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 16448b3d6663SArnd Bergmann u64 ret; 16458b3d6663SArnd Bergmann spu_acquire_saved(ctx); 164674de08bcSMichael Ellerman ret = __spufs_decr_get(ctx); 164727b1ea09SChristoph Hellwig spu_release_saved(ctx); 16488b3d6663SArnd Bergmann return ret; 16498b3d6663SArnd Bergmann } 16508b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, 16519b5047e2SDwayne Grant McConnell "0x%llx\n") 16528b3d6663SArnd Bergmann 16538b3d6663SArnd Bergmann static void spufs_decr_status_set(void *data, u64 val) 16548b3d6663SArnd Bergmann { 16558b3d6663SArnd Bergmann struct spu_context *ctx = data; 16568b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1657d40a01d4SMasato Noguchi if (val) 1658d40a01d4SMasato Noguchi ctx->csa.priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING; 1659d40a01d4SMasato Noguchi else 1660d40a01d4SMasato Noguchi ctx->csa.priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING; 166127b1ea09SChristoph Hellwig spu_release_saved(ctx); 16628b3d6663SArnd Bergmann } 16638b3d6663SArnd Bergmann 166474de08bcSMichael Ellerman static u64 __spufs_decr_status_get(struct spu_context *ctx) 16658b3d6663SArnd Bergmann { 1666d40a01d4SMasato Noguchi if (ctx->csa.priv2.mfc_control_RW & MFC_CNTL_DECREMENTER_RUNNING) 1667d40a01d4SMasato Noguchi return SPU_DECR_STATUS_RUNNING; 1668d40a01d4SMasato Noguchi else 1669d40a01d4SMasato Noguchi return 0; 1670bf1ab978SDwayne Grant McConnell } 1671bf1ab978SDwayne Grant McConnell 1672bf1ab978SDwayne Grant McConnell static u64 spufs_decr_status_get(void *data) 1673bf1ab978SDwayne Grant McConnell { 1674bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 16758b3d6663SArnd Bergmann u64 ret; 16768b3d6663SArnd Bergmann spu_acquire_saved(ctx); 167774de08bcSMichael Ellerman ret = __spufs_decr_status_get(ctx); 167827b1ea09SChristoph Hellwig spu_release_saved(ctx); 16798b3d6663SArnd Bergmann return ret; 16808b3d6663SArnd Bergmann } 16818b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, 16829b5047e2SDwayne Grant McConnell spufs_decr_status_set, "0x%llx\n") 16838b3d6663SArnd Bergmann 16848b3d6663SArnd Bergmann static void spufs_event_mask_set(void *data, u64 val) 16858b3d6663SArnd Bergmann { 16868b3d6663SArnd Bergmann struct spu_context *ctx = data; 16878b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 16888b3d6663SArnd Bergmann spu_acquire_saved(ctx); 16898b3d6663SArnd Bergmann lscsa->event_mask.slot[0] = (u32) val; 169027b1ea09SChristoph Hellwig spu_release_saved(ctx); 16918b3d6663SArnd Bergmann } 16928b3d6663SArnd Bergmann 169374de08bcSMichael Ellerman static u64 __spufs_event_mask_get(struct spu_context *ctx) 16948b3d6663SArnd Bergmann { 16958b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1696bf1ab978SDwayne Grant McConnell return lscsa->event_mask.slot[0]; 1697bf1ab978SDwayne Grant McConnell } 1698bf1ab978SDwayne Grant McConnell 1699bf1ab978SDwayne Grant McConnell static u64 spufs_event_mask_get(void *data) 1700bf1ab978SDwayne Grant McConnell { 1701bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 17028b3d6663SArnd Bergmann u64 ret; 17038b3d6663SArnd Bergmann spu_acquire_saved(ctx); 170474de08bcSMichael Ellerman ret = __spufs_event_mask_get(ctx); 170527b1ea09SChristoph Hellwig spu_release_saved(ctx); 17068b3d6663SArnd Bergmann return ret; 17078b3d6663SArnd Bergmann } 17088b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, 17099b5047e2SDwayne Grant McConnell spufs_event_mask_set, "0x%llx\n") 17108b3d6663SArnd Bergmann 171174de08bcSMichael Ellerman static u64 __spufs_event_status_get(struct spu_context *ctx) 1712b9e3bd77SDwayne Grant McConnell { 1713b9e3bd77SDwayne Grant McConnell struct spu_state *state = &ctx->csa; 1714b9e3bd77SDwayne Grant McConnell u64 stat; 1715b9e3bd77SDwayne Grant McConnell stat = state->spu_chnlcnt_RW[0]; 1716b9e3bd77SDwayne Grant McConnell if (stat) 1717bf1ab978SDwayne Grant McConnell return state->spu_chnldata_RW[0]; 1718bf1ab978SDwayne Grant McConnell return 0; 1719bf1ab978SDwayne Grant McConnell } 1720bf1ab978SDwayne Grant McConnell 1721bf1ab978SDwayne Grant McConnell static u64 spufs_event_status_get(void *data) 1722bf1ab978SDwayne Grant McConnell { 1723bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 1724bf1ab978SDwayne Grant McConnell u64 ret = 0; 1725bf1ab978SDwayne Grant McConnell 1726bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 172774de08bcSMichael Ellerman ret = __spufs_event_status_get(ctx); 172827b1ea09SChristoph Hellwig spu_release_saved(ctx); 1729b9e3bd77SDwayne Grant McConnell return ret; 1730b9e3bd77SDwayne Grant McConnell } 1731b9e3bd77SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, 1732b9e3bd77SDwayne Grant McConnell NULL, "0x%llx\n") 1733b9e3bd77SDwayne Grant McConnell 17348b3d6663SArnd Bergmann static void spufs_srr0_set(void *data, u64 val) 17358b3d6663SArnd Bergmann { 17368b3d6663SArnd Bergmann struct spu_context *ctx = data; 17378b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 17388b3d6663SArnd Bergmann spu_acquire_saved(ctx); 17398b3d6663SArnd Bergmann lscsa->srr0.slot[0] = (u32) val; 174027b1ea09SChristoph Hellwig spu_release_saved(ctx); 17418b3d6663SArnd Bergmann } 17428b3d6663SArnd Bergmann 17438b3d6663SArnd Bergmann static u64 spufs_srr0_get(void *data) 17448b3d6663SArnd Bergmann { 17458b3d6663SArnd Bergmann struct spu_context *ctx = data; 17468b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 17478b3d6663SArnd Bergmann u64 ret; 17488b3d6663SArnd Bergmann spu_acquire_saved(ctx); 17498b3d6663SArnd Bergmann ret = lscsa->srr0.slot[0]; 175027b1ea09SChristoph Hellwig spu_release_saved(ctx); 17518b3d6663SArnd Bergmann return ret; 17528b3d6663SArnd Bergmann } 17538b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, 17549b5047e2SDwayne Grant McConnell "0x%llx\n") 17558b3d6663SArnd Bergmann 17567b1a7014Sarnd@arndb.de static u64 spufs_id_get(void *data) 17577b1a7014Sarnd@arndb.de { 17587b1a7014Sarnd@arndb.de struct spu_context *ctx = data; 17597b1a7014Sarnd@arndb.de u64 num; 17607b1a7014Sarnd@arndb.de 17617b1a7014Sarnd@arndb.de spu_acquire(ctx); 17627b1a7014Sarnd@arndb.de if (ctx->state == SPU_STATE_RUNNABLE) 17637b1a7014Sarnd@arndb.de num = ctx->spu->number; 17647b1a7014Sarnd@arndb.de else 17657b1a7014Sarnd@arndb.de num = (unsigned int)-1; 17667b1a7014Sarnd@arndb.de spu_release(ctx); 17677b1a7014Sarnd@arndb.de 17687b1a7014Sarnd@arndb.de return num; 17697b1a7014Sarnd@arndb.de } 1770e45d6634SAl Viro DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n") 17717b1a7014Sarnd@arndb.de 177274de08bcSMichael Ellerman static u64 __spufs_object_id_get(struct spu_context *ctx) 177386767277SArnd Bergmann { 177486767277SArnd Bergmann return ctx->object_id; 177586767277SArnd Bergmann } 177686767277SArnd Bergmann 1777bf1ab978SDwayne Grant McConnell static u64 spufs_object_id_get(void *data) 1778bf1ab978SDwayne Grant McConnell { 1779bf1ab978SDwayne Grant McConnell /* FIXME: Should there really be no locking here? */ 178074de08bcSMichael Ellerman return __spufs_object_id_get((struct spu_context *)data); 1781bf1ab978SDwayne Grant McConnell } 1782bf1ab978SDwayne Grant McConnell 178386767277SArnd Bergmann static void spufs_object_id_set(void *data, u64 id) 178486767277SArnd Bergmann { 178586767277SArnd Bergmann struct spu_context *ctx = data; 178686767277SArnd Bergmann ctx->object_id = id; 178786767277SArnd Bergmann } 178886767277SArnd Bergmann 178986767277SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, 179086767277SArnd Bergmann spufs_object_id_set, "0x%llx\n"); 179186767277SArnd Bergmann 179274de08bcSMichael Ellerman static u64 __spufs_lslr_get(struct spu_context *ctx) 1793bf1ab978SDwayne Grant McConnell { 1794bf1ab978SDwayne Grant McConnell return ctx->csa.priv2.spu_lslr_RW; 1795bf1ab978SDwayne Grant McConnell } 1796bf1ab978SDwayne Grant McConnell 1797b9e3bd77SDwayne Grant McConnell static u64 spufs_lslr_get(void *data) 1798b9e3bd77SDwayne Grant McConnell { 1799b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = data; 1800b9e3bd77SDwayne Grant McConnell u64 ret; 1801b9e3bd77SDwayne Grant McConnell 1802b9e3bd77SDwayne Grant McConnell spu_acquire_saved(ctx); 180374de08bcSMichael Ellerman ret = __spufs_lslr_get(ctx); 180427b1ea09SChristoph Hellwig spu_release_saved(ctx); 1805b9e3bd77SDwayne Grant McConnell 1806b9e3bd77SDwayne Grant McConnell return ret; 1807b9e3bd77SDwayne Grant McConnell } 1808b9e3bd77SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n") 1809b9e3bd77SDwayne Grant McConnell 1810b9e3bd77SDwayne Grant McConnell static int spufs_info_open(struct inode *inode, struct file *file) 1811b9e3bd77SDwayne Grant McConnell { 1812b9e3bd77SDwayne Grant McConnell struct spufs_inode_info *i = SPUFS_I(inode); 1813b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = i->i_ctx; 1814b9e3bd77SDwayne Grant McConnell file->private_data = ctx; 1815b9e3bd77SDwayne Grant McConnell return 0; 1816b9e3bd77SDwayne Grant McConnell } 1817b9e3bd77SDwayne Grant McConnell 1818cbe709c1SBenjamin Herrenschmidt static int spufs_caps_show(struct seq_file *s, void *private) 1819cbe709c1SBenjamin Herrenschmidt { 1820cbe709c1SBenjamin Herrenschmidt struct spu_context *ctx = s->private; 1821cbe709c1SBenjamin Herrenschmidt 1822cbe709c1SBenjamin Herrenschmidt if (!(ctx->flags & SPU_CREATE_NOSCHED)) 1823cbe709c1SBenjamin Herrenschmidt seq_puts(s, "sched\n"); 1824cbe709c1SBenjamin Herrenschmidt if (!(ctx->flags & SPU_CREATE_ISOLATE)) 1825cbe709c1SBenjamin Herrenschmidt seq_puts(s, "step\n"); 1826cbe709c1SBenjamin Herrenschmidt return 0; 1827cbe709c1SBenjamin Herrenschmidt } 1828cbe709c1SBenjamin Herrenschmidt 1829cbe709c1SBenjamin Herrenschmidt static int spufs_caps_open(struct inode *inode, struct file *file) 1830cbe709c1SBenjamin Herrenschmidt { 1831cbe709c1SBenjamin Herrenschmidt return single_open(file, spufs_caps_show, SPUFS_I(inode)->i_ctx); 1832cbe709c1SBenjamin Herrenschmidt } 1833cbe709c1SBenjamin Herrenschmidt 1834cbe709c1SBenjamin Herrenschmidt static const struct file_operations spufs_caps_fops = { 1835cbe709c1SBenjamin Herrenschmidt .open = spufs_caps_open, 1836cbe709c1SBenjamin Herrenschmidt .read = seq_read, 1837cbe709c1SBenjamin Herrenschmidt .llseek = seq_lseek, 1838cbe709c1SBenjamin Herrenschmidt .release = single_release, 1839cbe709c1SBenjamin Herrenschmidt }; 1840cbe709c1SBenjamin Herrenschmidt 1841bf1ab978SDwayne Grant McConnell static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, 1842bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1843bf1ab978SDwayne Grant McConnell { 1844bf1ab978SDwayne Grant McConnell u32 mbox_stat; 1845bf1ab978SDwayne Grant McConnell u32 data; 1846bf1ab978SDwayne Grant McConnell 1847bf1ab978SDwayne Grant McConnell mbox_stat = ctx->csa.prob.mb_stat_R; 1848bf1ab978SDwayne Grant McConnell if (mbox_stat & 0x0000ff) { 1849bf1ab978SDwayne Grant McConnell data = ctx->csa.prob.pu_mb_R; 1850bf1ab978SDwayne Grant McConnell } 1851bf1ab978SDwayne Grant McConnell 1852bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1853bf1ab978SDwayne Grant McConnell } 1854bf1ab978SDwayne Grant McConnell 185569a2f00cSDwayne Grant McConnell static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, 185669a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 185769a2f00cSDwayne Grant McConnell { 1858bf1ab978SDwayne Grant McConnell int ret; 185969a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 186069a2f00cSDwayne Grant McConnell 186169a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 186269a2f00cSDwayne Grant McConnell return -EFAULT; 186369a2f00cSDwayne Grant McConnell 186469a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 186569a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1866bf1ab978SDwayne Grant McConnell ret = __spufs_mbox_info_read(ctx, buf, len, pos); 186769a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 186827b1ea09SChristoph Hellwig spu_release_saved(ctx); 186969a2f00cSDwayne Grant McConnell 1870bf1ab978SDwayne Grant McConnell return ret; 187169a2f00cSDwayne Grant McConnell } 187269a2f00cSDwayne Grant McConnell 18735dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_info_fops = { 187469a2f00cSDwayne Grant McConnell .open = spufs_info_open, 187569a2f00cSDwayne Grant McConnell .read = spufs_mbox_info_read, 187669a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 187769a2f00cSDwayne Grant McConnell }; 187869a2f00cSDwayne Grant McConnell 1879bf1ab978SDwayne Grant McConnell static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, 1880bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1881bf1ab978SDwayne Grant McConnell { 1882bf1ab978SDwayne Grant McConnell u32 ibox_stat; 1883bf1ab978SDwayne Grant McConnell u32 data; 1884bf1ab978SDwayne Grant McConnell 1885bf1ab978SDwayne Grant McConnell ibox_stat = ctx->csa.prob.mb_stat_R; 1886bf1ab978SDwayne Grant McConnell if (ibox_stat & 0xff0000) { 1887bf1ab978SDwayne Grant McConnell data = ctx->csa.priv2.puint_mb_R; 1888bf1ab978SDwayne Grant McConnell } 1889bf1ab978SDwayne Grant McConnell 1890bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1891bf1ab978SDwayne Grant McConnell } 1892bf1ab978SDwayne Grant McConnell 189369a2f00cSDwayne Grant McConnell static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, 189469a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 189569a2f00cSDwayne Grant McConnell { 189669a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1897bf1ab978SDwayne Grant McConnell int ret; 189869a2f00cSDwayne Grant McConnell 189969a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 190069a2f00cSDwayne Grant McConnell return -EFAULT; 190169a2f00cSDwayne Grant McConnell 190269a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 190369a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1904bf1ab978SDwayne Grant McConnell ret = __spufs_ibox_info_read(ctx, buf, len, pos); 190569a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 190627b1ea09SChristoph Hellwig spu_release_saved(ctx); 190769a2f00cSDwayne Grant McConnell 1908bf1ab978SDwayne Grant McConnell return ret; 190969a2f00cSDwayne Grant McConnell } 191069a2f00cSDwayne Grant McConnell 19115dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_info_fops = { 191269a2f00cSDwayne Grant McConnell .open = spufs_info_open, 191369a2f00cSDwayne Grant McConnell .read = spufs_ibox_info_read, 191469a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 191569a2f00cSDwayne Grant McConnell }; 191669a2f00cSDwayne Grant McConnell 1917bf1ab978SDwayne Grant McConnell static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, 1918bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1919bf1ab978SDwayne Grant McConnell { 1920bf1ab978SDwayne Grant McConnell int i, cnt; 1921bf1ab978SDwayne Grant McConnell u32 data[4]; 1922bf1ab978SDwayne Grant McConnell u32 wbox_stat; 1923bf1ab978SDwayne Grant McConnell 1924bf1ab978SDwayne Grant McConnell wbox_stat = ctx->csa.prob.mb_stat_R; 1925bf1ab978SDwayne Grant McConnell cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); 1926bf1ab978SDwayne Grant McConnell for (i = 0; i < cnt; i++) { 1927bf1ab978SDwayne Grant McConnell data[i] = ctx->csa.spu_mailbox_data[i]; 1928bf1ab978SDwayne Grant McConnell } 1929bf1ab978SDwayne Grant McConnell 1930bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, 1931bf1ab978SDwayne Grant McConnell cnt * sizeof(u32)); 1932bf1ab978SDwayne Grant McConnell } 1933bf1ab978SDwayne Grant McConnell 193469a2f00cSDwayne Grant McConnell static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, 193569a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 193669a2f00cSDwayne Grant McConnell { 193769a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1938bf1ab978SDwayne Grant McConnell int ret; 193969a2f00cSDwayne Grant McConnell 194069a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 194169a2f00cSDwayne Grant McConnell return -EFAULT; 194269a2f00cSDwayne Grant McConnell 194369a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 194469a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1945bf1ab978SDwayne Grant McConnell ret = __spufs_wbox_info_read(ctx, buf, len, pos); 194669a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 194727b1ea09SChristoph Hellwig spu_release_saved(ctx); 194869a2f00cSDwayne Grant McConnell 1949bf1ab978SDwayne Grant McConnell return ret; 195069a2f00cSDwayne Grant McConnell } 195169a2f00cSDwayne Grant McConnell 19525dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_info_fops = { 195369a2f00cSDwayne Grant McConnell .open = spufs_info_open, 195469a2f00cSDwayne Grant McConnell .read = spufs_wbox_info_read, 195569a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 195669a2f00cSDwayne Grant McConnell }; 195769a2f00cSDwayne Grant McConnell 1958bf1ab978SDwayne Grant McConnell static ssize_t __spufs_dma_info_read(struct spu_context *ctx, 1959bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1960b9e3bd77SDwayne Grant McConnell { 1961b9e3bd77SDwayne Grant McConnell struct spu_dma_info info; 1962b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *spuqp; 1963b9e3bd77SDwayne Grant McConnell int i; 1964b9e3bd77SDwayne Grant McConnell 1965b9e3bd77SDwayne Grant McConnell info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; 1966b9e3bd77SDwayne Grant McConnell info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; 1967b9e3bd77SDwayne Grant McConnell info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; 1968b9e3bd77SDwayne Grant McConnell info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; 1969b9e3bd77SDwayne Grant McConnell info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; 1970b9e3bd77SDwayne Grant McConnell for (i = 0; i < 16; i++) { 1971b9e3bd77SDwayne Grant McConnell qp = &info.dma_info_command_data[i]; 1972b9e3bd77SDwayne Grant McConnell spuqp = &ctx->csa.priv2.spuq[i]; 1973b9e3bd77SDwayne Grant McConnell 1974b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; 1975b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; 1976b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; 1977b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; 1978b9e3bd77SDwayne Grant McConnell } 1979b9e3bd77SDwayne Grant McConnell 1980b9e3bd77SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 1981b9e3bd77SDwayne Grant McConnell sizeof info); 1982b9e3bd77SDwayne Grant McConnell } 1983b9e3bd77SDwayne Grant McConnell 1984bf1ab978SDwayne Grant McConnell static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, 1985bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 1986bf1ab978SDwayne Grant McConnell { 1987bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1988bf1ab978SDwayne Grant McConnell int ret; 1989bf1ab978SDwayne Grant McConnell 1990bf1ab978SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 1991bf1ab978SDwayne Grant McConnell return -EFAULT; 1992bf1ab978SDwayne Grant McConnell 1993bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1994bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1995bf1ab978SDwayne Grant McConnell ret = __spufs_dma_info_read(ctx, buf, len, pos); 1996bf1ab978SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 199727b1ea09SChristoph Hellwig spu_release_saved(ctx); 1998bf1ab978SDwayne Grant McConnell 1999bf1ab978SDwayne Grant McConnell return ret; 2000bf1ab978SDwayne Grant McConnell } 2001bf1ab978SDwayne Grant McConnell 20025dfe4c96SArjan van de Ven static const struct file_operations spufs_dma_info_fops = { 2003b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 2004b9e3bd77SDwayne Grant McConnell .read = spufs_dma_info_read, 2005b9e3bd77SDwayne Grant McConnell }; 2006b9e3bd77SDwayne Grant McConnell 2007bf1ab978SDwayne Grant McConnell static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, 2008bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 2009b9e3bd77SDwayne Grant McConnell { 2010b9e3bd77SDwayne Grant McConnell struct spu_proxydma_info info; 2011b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *puqp; 2012bf1ab978SDwayne Grant McConnell int ret = sizeof info; 2013b9e3bd77SDwayne Grant McConnell int i; 2014b9e3bd77SDwayne Grant McConnell 2015b9e3bd77SDwayne Grant McConnell if (len < ret) 2016b9e3bd77SDwayne Grant McConnell return -EINVAL; 2017b9e3bd77SDwayne Grant McConnell 2018b9e3bd77SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 2019b9e3bd77SDwayne Grant McConnell return -EFAULT; 2020b9e3bd77SDwayne Grant McConnell 2021b9e3bd77SDwayne Grant McConnell info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; 2022b9e3bd77SDwayne Grant McConnell info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; 2023b9e3bd77SDwayne Grant McConnell info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; 2024b9e3bd77SDwayne Grant McConnell for (i = 0; i < 8; i++) { 2025b9e3bd77SDwayne Grant McConnell qp = &info.proxydma_info_command_data[i]; 2026b9e3bd77SDwayne Grant McConnell puqp = &ctx->csa.priv2.puq[i]; 2027b9e3bd77SDwayne Grant McConnell 2028b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; 2029b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; 2030b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; 2031b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; 2032b9e3bd77SDwayne Grant McConnell } 2033bf1ab978SDwayne Grant McConnell 2034bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 2035bf1ab978SDwayne Grant McConnell sizeof info); 2036bf1ab978SDwayne Grant McConnell } 2037bf1ab978SDwayne Grant McConnell 2038bf1ab978SDwayne Grant McConnell static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, 2039bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 2040bf1ab978SDwayne Grant McConnell { 2041bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 2042bf1ab978SDwayne Grant McConnell int ret; 2043bf1ab978SDwayne Grant McConnell 2044bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 2045bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 2046bf1ab978SDwayne Grant McConnell ret = __spufs_proxydma_info_read(ctx, buf, len, pos); 2047b9e3bd77SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 204827b1ea09SChristoph Hellwig spu_release_saved(ctx); 2049b9e3bd77SDwayne Grant McConnell 2050b9e3bd77SDwayne Grant McConnell return ret; 2051b9e3bd77SDwayne Grant McConnell } 2052b9e3bd77SDwayne Grant McConnell 20535dfe4c96SArjan van de Ven static const struct file_operations spufs_proxydma_info_fops = { 2054b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 2055b9e3bd77SDwayne Grant McConnell .read = spufs_proxydma_info_read, 2056b9e3bd77SDwayne Grant McConnell }; 2057b9e3bd77SDwayne Grant McConnell 2058476273adSChristoph Hellwig static int spufs_show_tid(struct seq_file *s, void *private) 2059476273adSChristoph Hellwig { 2060476273adSChristoph Hellwig struct spu_context *ctx = s->private; 2061476273adSChristoph Hellwig 2062476273adSChristoph Hellwig seq_printf(s, "%d\n", ctx->tid); 2063476273adSChristoph Hellwig return 0; 2064476273adSChristoph Hellwig } 2065476273adSChristoph Hellwig 2066476273adSChristoph Hellwig static int spufs_tid_open(struct inode *inode, struct file *file) 2067476273adSChristoph Hellwig { 2068476273adSChristoph Hellwig return single_open(file, spufs_show_tid, SPUFS_I(inode)->i_ctx); 2069476273adSChristoph Hellwig } 2070476273adSChristoph Hellwig 2071476273adSChristoph Hellwig static const struct file_operations spufs_tid_fops = { 2072476273adSChristoph Hellwig .open = spufs_tid_open, 2073476273adSChristoph Hellwig .read = seq_read, 2074476273adSChristoph Hellwig .llseek = seq_lseek, 2075476273adSChristoph Hellwig .release = single_release, 2076476273adSChristoph Hellwig }; 2077476273adSChristoph Hellwig 2078e9f8a0b6SChristoph Hellwig static const char *ctx_state_names[] = { 2079e9f8a0b6SChristoph Hellwig "user", "system", "iowait", "loaded" 2080e9f8a0b6SChristoph Hellwig }; 2081e9f8a0b6SChristoph Hellwig 2082e9f8a0b6SChristoph Hellwig static unsigned long long spufs_acct_time(struct spu_context *ctx, 208327ec41d3SAndre Detsch enum spu_utilization_state state) 2084e9f8a0b6SChristoph Hellwig { 208527ec41d3SAndre Detsch struct timespec ts; 208627ec41d3SAndre Detsch unsigned long long time = ctx->stats.times[state]; 2087e9f8a0b6SChristoph Hellwig 208827ec41d3SAndre Detsch /* 208927ec41d3SAndre Detsch * In general, utilization statistics are updated by the controlling 209027ec41d3SAndre Detsch * thread as the spu context moves through various well defined 209127ec41d3SAndre Detsch * state transitions, but if the context is lazily loaded its 209227ec41d3SAndre Detsch * utilization statistics are not updated as the controlling thread 209327ec41d3SAndre Detsch * is not tightly coupled with the execution of the spu context. We 209427ec41d3SAndre Detsch * calculate and apply the time delta from the last recorded state 209527ec41d3SAndre Detsch * of the spu context. 209627ec41d3SAndre Detsch */ 209727ec41d3SAndre Detsch if (ctx->spu && ctx->stats.util_state == state) { 209827ec41d3SAndre Detsch ktime_get_ts(&ts); 209927ec41d3SAndre Detsch time += timespec_to_ns(&ts) - ctx->stats.tstamp; 210027ec41d3SAndre Detsch } 2101e9f8a0b6SChristoph Hellwig 210227ec41d3SAndre Detsch return time / NSEC_PER_MSEC; 2103e9f8a0b6SChristoph Hellwig } 2104e9f8a0b6SChristoph Hellwig 2105e9f8a0b6SChristoph Hellwig static unsigned long long spufs_slb_flts(struct spu_context *ctx) 2106e9f8a0b6SChristoph Hellwig { 2107e9f8a0b6SChristoph Hellwig unsigned long long slb_flts = ctx->stats.slb_flt; 2108e9f8a0b6SChristoph Hellwig 2109e9f8a0b6SChristoph Hellwig if (ctx->state == SPU_STATE_RUNNABLE) { 2110e9f8a0b6SChristoph Hellwig slb_flts += (ctx->spu->stats.slb_flt - 2111e9f8a0b6SChristoph Hellwig ctx->stats.slb_flt_base); 2112e9f8a0b6SChristoph Hellwig } 2113e9f8a0b6SChristoph Hellwig 2114e9f8a0b6SChristoph Hellwig return slb_flts; 2115e9f8a0b6SChristoph Hellwig } 2116e9f8a0b6SChristoph Hellwig 2117e9f8a0b6SChristoph Hellwig static unsigned long long spufs_class2_intrs(struct spu_context *ctx) 2118e9f8a0b6SChristoph Hellwig { 2119e9f8a0b6SChristoph Hellwig unsigned long long class2_intrs = ctx->stats.class2_intr; 2120e9f8a0b6SChristoph Hellwig 2121e9f8a0b6SChristoph Hellwig if (ctx->state == SPU_STATE_RUNNABLE) { 2122e9f8a0b6SChristoph Hellwig class2_intrs += (ctx->spu->stats.class2_intr - 2123e9f8a0b6SChristoph Hellwig ctx->stats.class2_intr_base); 2124e9f8a0b6SChristoph Hellwig } 2125e9f8a0b6SChristoph Hellwig 2126e9f8a0b6SChristoph Hellwig return class2_intrs; 2127e9f8a0b6SChristoph Hellwig } 2128e9f8a0b6SChristoph Hellwig 2129e9f8a0b6SChristoph Hellwig 2130e9f8a0b6SChristoph Hellwig static int spufs_show_stat(struct seq_file *s, void *private) 2131e9f8a0b6SChristoph Hellwig { 2132e9f8a0b6SChristoph Hellwig struct spu_context *ctx = s->private; 2133e9f8a0b6SChristoph Hellwig 2134e9f8a0b6SChristoph Hellwig spu_acquire(ctx); 2135e9f8a0b6SChristoph Hellwig seq_printf(s, "%s %llu %llu %llu %llu " 2136e9f8a0b6SChristoph Hellwig "%llu %llu %llu %llu %llu %llu %llu %llu\n", 213727ec41d3SAndre Detsch ctx_state_names[ctx->stats.util_state], 213827ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_USER), 213927ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_SYSTEM), 214027ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_IOWAIT), 214127ec41d3SAndre Detsch spufs_acct_time(ctx, SPU_UTIL_IDLE_LOADED), 2142e9f8a0b6SChristoph Hellwig ctx->stats.vol_ctx_switch, 2143e9f8a0b6SChristoph Hellwig ctx->stats.invol_ctx_switch, 2144e9f8a0b6SChristoph Hellwig spufs_slb_flts(ctx), 2145e9f8a0b6SChristoph Hellwig ctx->stats.hash_flt, 2146e9f8a0b6SChristoph Hellwig ctx->stats.min_flt, 2147e9f8a0b6SChristoph Hellwig ctx->stats.maj_flt, 2148e9f8a0b6SChristoph Hellwig spufs_class2_intrs(ctx), 2149e9f8a0b6SChristoph Hellwig ctx->stats.libassist); 2150e9f8a0b6SChristoph Hellwig spu_release(ctx); 2151e9f8a0b6SChristoph Hellwig return 0; 2152e9f8a0b6SChristoph Hellwig } 2153e9f8a0b6SChristoph Hellwig 2154e9f8a0b6SChristoph Hellwig static int spufs_stat_open(struct inode *inode, struct file *file) 2155e9f8a0b6SChristoph Hellwig { 2156e9f8a0b6SChristoph Hellwig return single_open(file, spufs_show_stat, SPUFS_I(inode)->i_ctx); 2157e9f8a0b6SChristoph Hellwig } 2158e9f8a0b6SChristoph Hellwig 2159e9f8a0b6SChristoph Hellwig static const struct file_operations spufs_stat_fops = { 2160e9f8a0b6SChristoph Hellwig .open = spufs_stat_open, 2161e9f8a0b6SChristoph Hellwig .read = seq_read, 2162e9f8a0b6SChristoph Hellwig .llseek = seq_lseek, 2163e9f8a0b6SChristoph Hellwig .release = single_release, 2164e9f8a0b6SChristoph Hellwig }; 2165e9f8a0b6SChristoph Hellwig 2166e9f8a0b6SChristoph Hellwig 216767207b96SArnd Bergmann struct tree_descr spufs_dir_contents[] = { 2168cbe709c1SBenjamin Herrenschmidt { "capabilities", &spufs_caps_fops, 0444, }, 216967207b96SArnd Bergmann { "mem", &spufs_mem_fops, 0666, }, 21708b3d6663SArnd Bergmann { "regs", &spufs_regs_fops, 0666, }, 217167207b96SArnd Bergmann { "mbox", &spufs_mbox_fops, 0444, }, 217267207b96SArnd Bergmann { "ibox", &spufs_ibox_fops, 0444, }, 217367207b96SArnd Bergmann { "wbox", &spufs_wbox_fops, 0222, }, 217467207b96SArnd Bergmann { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 217567207b96SArnd Bergmann { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 217667207b96SArnd Bergmann { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 21778b6f50efSJeremy Kerr { "signal1", &spufs_signal1_nosched_fops, 0222, }, 21788b6f50efSJeremy Kerr { "signal2", &spufs_signal2_nosched_fops, 0222, }, 217967207b96SArnd Bergmann { "signal1_type", &spufs_signal1_type, 0666, }, 218067207b96SArnd Bergmann { "signal2_type", &spufs_signal2_type, 0666, }, 21816df10a82SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 21828b3d6663SArnd Bergmann { "fpcr", &spufs_fpcr_fops, 0666, }, 2183b9e3bd77SDwayne Grant McConnell { "lslr", &spufs_lslr_ops, 0444, }, 2184b9e3bd77SDwayne Grant McConnell { "mfc", &spufs_mfc_fops, 0666, }, 2185b9e3bd77SDwayne Grant McConnell { "mss", &spufs_mss_fops, 0666, }, 2186b9e3bd77SDwayne Grant McConnell { "npc", &spufs_npc_ops, 0666, }, 2187b9e3bd77SDwayne Grant McConnell { "srr0", &spufs_srr0_ops, 0666, }, 21888b3d6663SArnd Bergmann { "decr", &spufs_decr_ops, 0666, }, 21898b3d6663SArnd Bergmann { "decr_status", &spufs_decr_status_ops, 0666, }, 21908b3d6663SArnd Bergmann { "event_mask", &spufs_event_mask_ops, 0666, }, 2191b9e3bd77SDwayne Grant McConnell { "event_status", &spufs_event_status_ops, 0444, }, 219227d5bf2aSBenjamin Herrenschmidt { "psmap", &spufs_psmap_fops, 0666, }, 219386767277SArnd Bergmann { "phys-id", &spufs_id_ops, 0666, }, 219486767277SArnd Bergmann { "object-id", &spufs_object_id_ops, 0666, }, 219569a2f00cSDwayne Grant McConnell { "mbox_info", &spufs_mbox_info_fops, 0444, }, 219669a2f00cSDwayne Grant McConnell { "ibox_info", &spufs_ibox_info_fops, 0444, }, 219769a2f00cSDwayne Grant McConnell { "wbox_info", &spufs_wbox_info_fops, 0444, }, 2198b9e3bd77SDwayne Grant McConnell { "dma_info", &spufs_dma_info_fops, 0444, }, 2199b9e3bd77SDwayne Grant McConnell { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, 2200476273adSChristoph Hellwig { "tid", &spufs_tid_fops, 0444, }, 2201e9f8a0b6SChristoph Hellwig { "stat", &spufs_stat_fops, 0444, }, 220267207b96SArnd Bergmann {}, 220367207b96SArnd Bergmann }; 22045737edd1SMark Nutter 22055737edd1SMark Nutter struct tree_descr spufs_dir_nosched_contents[] = { 2206cbe709c1SBenjamin Herrenschmidt { "capabilities", &spufs_caps_fops, 0444, }, 22075737edd1SMark Nutter { "mem", &spufs_mem_fops, 0666, }, 22085737edd1SMark Nutter { "mbox", &spufs_mbox_fops, 0444, }, 22095737edd1SMark Nutter { "ibox", &spufs_ibox_fops, 0444, }, 22105737edd1SMark Nutter { "wbox", &spufs_wbox_fops, 0222, }, 22115737edd1SMark Nutter { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 22125737edd1SMark Nutter { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 22135737edd1SMark Nutter { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 2214d054b36fSJeremy Kerr { "signal1", &spufs_signal1_nosched_fops, 0222, }, 2215d054b36fSJeremy Kerr { "signal2", &spufs_signal2_nosched_fops, 0222, }, 22165737edd1SMark Nutter { "signal1_type", &spufs_signal1_type, 0666, }, 22175737edd1SMark Nutter { "signal2_type", &spufs_signal2_type, 0666, }, 22185737edd1SMark Nutter { "mss", &spufs_mss_fops, 0666, }, 22195737edd1SMark Nutter { "mfc", &spufs_mfc_fops, 0666, }, 22205737edd1SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 22215737edd1SMark Nutter { "npc", &spufs_npc_ops, 0666, }, 22225737edd1SMark Nutter { "psmap", &spufs_psmap_fops, 0666, }, 22235737edd1SMark Nutter { "phys-id", &spufs_id_ops, 0666, }, 22245737edd1SMark Nutter { "object-id", &spufs_object_id_ops, 0666, }, 2225476273adSChristoph Hellwig { "tid", &spufs_tid_fops, 0444, }, 2226e9f8a0b6SChristoph Hellwig { "stat", &spufs_stat_fops, 0444, }, 22275737edd1SMark Nutter {}, 22285737edd1SMark Nutter }; 2229bf1ab978SDwayne Grant McConnell 2230bf1ab978SDwayne Grant McConnell struct spufs_coredump_reader spufs_coredump_read[] = { 22314fca9c42SMichael Ellerman { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])}, 22324fca9c42SMichael Ellerman { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) }, 2233d464fb44SMichael Ellerman { "lslr", NULL, __spufs_lslr_get, 19 }, 2234d464fb44SMichael Ellerman { "decr", NULL, __spufs_decr_get, 19 }, 2235d464fb44SMichael Ellerman { "decr_status", NULL, __spufs_decr_status_get, 19 }, 22364fca9c42SMichael Ellerman { "mem", __spufs_mem_read, NULL, LS_SIZE, }, 22374fca9c42SMichael Ellerman { "signal1", __spufs_signal1_read, NULL, sizeof(u32) }, 2238d464fb44SMichael Ellerman { "signal1_type", NULL, __spufs_signal1_type_get, 19 }, 22394fca9c42SMichael Ellerman { "signal2", __spufs_signal2_read, NULL, sizeof(u32) }, 2240d464fb44SMichael Ellerman { "signal2_type", NULL, __spufs_signal2_type_get, 19 }, 2241d464fb44SMichael Ellerman { "event_mask", NULL, __spufs_event_mask_get, 19 }, 2242d464fb44SMichael Ellerman { "event_status", NULL, __spufs_event_status_get, 19 }, 22434fca9c42SMichael Ellerman { "mbox_info", __spufs_mbox_info_read, NULL, sizeof(u32) }, 22444fca9c42SMichael Ellerman { "ibox_info", __spufs_ibox_info_read, NULL, sizeof(u32) }, 22454fca9c42SMichael Ellerman { "wbox_info", __spufs_wbox_info_read, NULL, 4 * sizeof(u32)}, 22464fca9c42SMichael Ellerman { "dma_info", __spufs_dma_info_read, NULL, sizeof(struct spu_dma_info)}, 22474fca9c42SMichael Ellerman { "proxydma_info", __spufs_proxydma_info_read, 22484fca9c42SMichael Ellerman NULL, sizeof(struct spu_proxydma_info)}, 2249bf1ab978SDwayne Grant McConnell { "object-id", NULL, __spufs_object_id_get, 19 }, 225078810ff6SMichael Ellerman { "npc", NULL, __spufs_npc_get, 19 }, 2251936d5bf1SMichael Ellerman { NULL }, 2252bf1ab978SDwayne Grant McConnell }; 2253