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> 3167207b96SArnd Bergmann 3267207b96SArnd Bergmann #include <asm/io.h> 3367207b96SArnd Bergmann #include <asm/semaphore.h> 3467207b96SArnd Bergmann #include <asm/spu.h> 35b9e3bd77SDwayne Grant McConnell #include <asm/spu_info.h> 3667207b96SArnd Bergmann #include <asm/uaccess.h> 3767207b96SArnd Bergmann 3867207b96SArnd Bergmann #include "spufs.h" 3967207b96SArnd Bergmann 4027d5bf2aSBenjamin Herrenschmidt #define SPUFS_MMAP_4K (PAGE_SIZE == 0x1000) 4127d5bf2aSBenjamin Herrenschmidt 4267207b96SArnd Bergmann static int 4367207b96SArnd Bergmann spufs_mem_open(struct inode *inode, struct file *file) 4467207b96SArnd Bergmann { 4567207b96SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 466df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 476df10a82SMark Nutter file->private_data = ctx; 486df10a82SMark Nutter ctx->local_store = inode->i_mapping; 4917e0e270SBenjamin Herrenschmidt smp_wmb(); 5067207b96SArnd Bergmann return 0; 5167207b96SArnd Bergmann } 5267207b96SArnd Bergmann 5367207b96SArnd Bergmann static ssize_t 54bf1ab978SDwayne Grant McConnell __spufs_mem_read(struct spu_context *ctx, char __user *buffer, 55bf1ab978SDwayne Grant McConnell size_t size, loff_t *pos) 56bf1ab978SDwayne Grant McConnell { 57bf1ab978SDwayne Grant McConnell char *local_store = ctx->ops->get_ls(ctx); 58bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, local_store, 59bf1ab978SDwayne Grant McConnell LS_SIZE); 60bf1ab978SDwayne Grant McConnell } 61bf1ab978SDwayne Grant McConnell 62bf1ab978SDwayne Grant McConnell static ssize_t 6367207b96SArnd Bergmann spufs_mem_read(struct file *file, char __user *buffer, 6467207b96SArnd Bergmann size_t size, loff_t *pos) 6567207b96SArnd Bergmann { 6667207b96SArnd Bergmann int ret; 67bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 6867207b96SArnd Bergmann 698b3d6663SArnd Bergmann spu_acquire(ctx); 70bf1ab978SDwayne Grant McConnell ret = __spufs_mem_read(ctx, buffer, size, pos); 718b3d6663SArnd Bergmann spu_release(ctx); 7267207b96SArnd Bergmann return ret; 7367207b96SArnd Bergmann } 7467207b96SArnd Bergmann 7567207b96SArnd Bergmann static ssize_t 7667207b96SArnd Bergmann spufs_mem_write(struct file *file, const char __user *buffer, 7767207b96SArnd Bergmann size_t size, loff_t *pos) 7867207b96SArnd Bergmann { 7967207b96SArnd Bergmann struct spu_context *ctx = file->private_data; 808b3d6663SArnd Bergmann char *local_store; 818b3d6663SArnd Bergmann int ret; 8267207b96SArnd Bergmann 8367207b96SArnd Bergmann size = min_t(ssize_t, LS_SIZE - *pos, size); 8467207b96SArnd Bergmann if (size <= 0) 8567207b96SArnd Bergmann return -EFBIG; 8667207b96SArnd Bergmann *pos += size; 878b3d6663SArnd Bergmann 888b3d6663SArnd Bergmann spu_acquire(ctx); 898b3d6663SArnd Bergmann 908b3d6663SArnd Bergmann local_store = ctx->ops->get_ls(ctx); 918b3d6663SArnd Bergmann ret = copy_from_user(local_store + *pos - size, 9267207b96SArnd Bergmann buffer, size) ? -EFAULT : size; 938b3d6663SArnd Bergmann 948b3d6663SArnd Bergmann spu_release(ctx); 958b3d6663SArnd Bergmann return ret; 9667207b96SArnd Bergmann } 9767207b96SArnd Bergmann 9878bde53eSBenjamin Herrenschmidt static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma, 9978bde53eSBenjamin Herrenschmidt unsigned long address) 1008b3d6663SArnd Bergmann { 1018b3d6663SArnd Bergmann struct spu_context *ctx = vma->vm_file->private_data; 10278bde53eSBenjamin Herrenschmidt unsigned long pfn, offset = address - vma->vm_start; 10378bde53eSBenjamin Herrenschmidt 1048b3d6663SArnd Bergmann offset += vma->vm_pgoff << PAGE_SHIFT; 1058b3d6663SArnd Bergmann 106128b8546SMasato Noguchi if (offset >= LS_SIZE) 107128b8546SMasato Noguchi return NOPFN_SIGBUS; 108128b8546SMasato Noguchi 1098b3d6663SArnd Bergmann spu_acquire(ctx); 1108b3d6663SArnd Bergmann 111ac91cb8dSArnd Bergmann if (ctx->state == SPU_STATE_SAVED) { 112ac91cb8dSArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 113932f535dSArnd Bergmann & ~_PAGE_NO_CACHE); 11478bde53eSBenjamin Herrenschmidt pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); 115ac91cb8dSArnd Bergmann } else { 116ac91cb8dSArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 117932f535dSArnd Bergmann | _PAGE_NO_CACHE); 11878bde53eSBenjamin Herrenschmidt pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; 119ac91cb8dSArnd Bergmann } 12078bde53eSBenjamin Herrenschmidt vm_insert_pfn(vma, address, pfn); 12178bde53eSBenjamin Herrenschmidt 1228b3d6663SArnd Bergmann spu_release(ctx); 1238b3d6663SArnd Bergmann 12478bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 1258b3d6663SArnd Bergmann } 1268b3d6663SArnd Bergmann 12778bde53eSBenjamin Herrenschmidt 1288b3d6663SArnd Bergmann static struct vm_operations_struct spufs_mem_mmap_vmops = { 12978bde53eSBenjamin Herrenschmidt .nopfn = spufs_mem_mmap_nopfn, 1308b3d6663SArnd Bergmann }; 1318b3d6663SArnd Bergmann 13267207b96SArnd Bergmann static int 13367207b96SArnd Bergmann spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) 13467207b96SArnd Bergmann { 1358b3d6663SArnd Bergmann if (!(vma->vm_flags & VM_SHARED)) 1368b3d6663SArnd Bergmann return -EINVAL; 13767207b96SArnd Bergmann 13878bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 13967207b96SArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 14067207b96SArnd Bergmann | _PAGE_NO_CACHE); 1418b3d6663SArnd Bergmann 1428b3d6663SArnd Bergmann vma->vm_ops = &spufs_mem_mmap_vmops; 14367207b96SArnd Bergmann return 0; 14467207b96SArnd Bergmann } 14567207b96SArnd Bergmann 1465dfe4c96SArjan van de Ven static const struct file_operations spufs_mem_fops = { 14767207b96SArnd Bergmann .open = spufs_mem_open, 14867207b96SArnd Bergmann .read = spufs_mem_read, 14967207b96SArnd Bergmann .write = spufs_mem_write, 1508b3d6663SArnd Bergmann .llseek = generic_file_llseek, 15167207b96SArnd Bergmann .mmap = spufs_mem_mmap, 1528b3d6663SArnd Bergmann }; 1538b3d6663SArnd Bergmann 15478bde53eSBenjamin Herrenschmidt static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma, 1556df10a82SMark Nutter unsigned long address, 15678bde53eSBenjamin Herrenschmidt unsigned long ps_offs, 15727d5bf2aSBenjamin Herrenschmidt unsigned long ps_size) 1586df10a82SMark Nutter { 1596df10a82SMark Nutter struct spu_context *ctx = vma->vm_file->private_data; 16078bde53eSBenjamin Herrenschmidt unsigned long area, offset = address - vma->vm_start; 1616df10a82SMark Nutter int ret; 1626df10a82SMark Nutter 1636df10a82SMark Nutter offset += vma->vm_pgoff << PAGE_SHIFT; 16427d5bf2aSBenjamin Herrenschmidt if (offset >= ps_size) 16578bde53eSBenjamin Herrenschmidt return NOPFN_SIGBUS; 1666df10a82SMark Nutter 16778bde53eSBenjamin Herrenschmidt /* error here usually means a signal.. we might want to test 16878bde53eSBenjamin Herrenschmidt * the error code more precisely though 16978bde53eSBenjamin Herrenschmidt */ 17026bec673SChristoph Hellwig ret = spu_acquire_runnable(ctx, 0); 1716df10a82SMark Nutter if (ret) 17278bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 1736df10a82SMark Nutter 1746df10a82SMark Nutter area = ctx->spu->problem_phys + ps_offs; 17578bde53eSBenjamin Herrenschmidt vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT); 1766df10a82SMark Nutter spu_release(ctx); 1776df10a82SMark Nutter 17878bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 1796df10a82SMark Nutter } 1806df10a82SMark Nutter 18127d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 18278bde53eSBenjamin Herrenschmidt static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma, 18378bde53eSBenjamin Herrenschmidt unsigned long address) 1846df10a82SMark Nutter { 18578bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x4000, 0x1000); 1866df10a82SMark Nutter } 1876df10a82SMark Nutter 1886df10a82SMark Nutter static struct vm_operations_struct spufs_cntl_mmap_vmops = { 18978bde53eSBenjamin Herrenschmidt .nopfn = spufs_cntl_mmap_nopfn, 1906df10a82SMark Nutter }; 1916df10a82SMark Nutter 1926df10a82SMark Nutter /* 1936df10a82SMark Nutter * mmap support for problem state control area [0x4000 - 0x4fff]. 1946df10a82SMark Nutter */ 1956df10a82SMark Nutter static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) 1966df10a82SMark Nutter { 1976df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 1986df10a82SMark Nutter return -EINVAL; 1996df10a82SMark Nutter 20078bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 2016df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 20223cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 2036df10a82SMark Nutter 2046df10a82SMark Nutter vma->vm_ops = &spufs_cntl_mmap_vmops; 2056df10a82SMark Nutter return 0; 2066df10a82SMark Nutter } 20727d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 20827d5bf2aSBenjamin Herrenschmidt #define spufs_cntl_mmap NULL 20927d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 2106df10a82SMark Nutter 211e1dbff2bSArnd Bergmann static u64 spufs_cntl_get(void *data) 212e1dbff2bSArnd Bergmann { 213e1dbff2bSArnd Bergmann struct spu_context *ctx = data; 214e1dbff2bSArnd Bergmann u64 val; 215e1dbff2bSArnd Bergmann 216e1dbff2bSArnd Bergmann spu_acquire(ctx); 217e1dbff2bSArnd Bergmann val = ctx->ops->status_read(ctx); 218e1dbff2bSArnd Bergmann spu_release(ctx); 219e1dbff2bSArnd Bergmann 220e1dbff2bSArnd Bergmann return val; 221e1dbff2bSArnd Bergmann } 222e1dbff2bSArnd Bergmann 223e1dbff2bSArnd Bergmann static void spufs_cntl_set(void *data, u64 val) 224e1dbff2bSArnd Bergmann { 225e1dbff2bSArnd Bergmann struct spu_context *ctx = data; 226e1dbff2bSArnd Bergmann 227e1dbff2bSArnd Bergmann spu_acquire(ctx); 228e1dbff2bSArnd Bergmann ctx->ops->runcntl_write(ctx, val); 229e1dbff2bSArnd Bergmann spu_release(ctx); 230e1dbff2bSArnd Bergmann } 231e1dbff2bSArnd Bergmann 2326df10a82SMark Nutter static int spufs_cntl_open(struct inode *inode, struct file *file) 2336df10a82SMark Nutter { 2346df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 2356df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 2366df10a82SMark Nutter 2376df10a82SMark Nutter file->private_data = ctx; 2386df10a82SMark Nutter ctx->cntl = inode->i_mapping; 23917e0e270SBenjamin Herrenschmidt smp_wmb(); 240e1dbff2bSArnd Bergmann return simple_attr_open(inode, file, spufs_cntl_get, 241e1dbff2bSArnd Bergmann spufs_cntl_set, "0x%08lx"); 2426df10a82SMark Nutter } 2436df10a82SMark Nutter 2445dfe4c96SArjan van de Ven static const struct file_operations spufs_cntl_fops = { 2456df10a82SMark Nutter .open = spufs_cntl_open, 246654e4aeeSNoguchi, Masato .release = simple_attr_close, 247e1dbff2bSArnd Bergmann .read = simple_attr_read, 248e1dbff2bSArnd Bergmann .write = simple_attr_write, 2496df10a82SMark Nutter .mmap = spufs_cntl_mmap, 2506df10a82SMark Nutter }; 2516df10a82SMark Nutter 2528b3d6663SArnd Bergmann static int 2538b3d6663SArnd Bergmann spufs_regs_open(struct inode *inode, struct file *file) 2548b3d6663SArnd Bergmann { 2558b3d6663SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 2568b3d6663SArnd Bergmann file->private_data = i->i_ctx; 2578b3d6663SArnd Bergmann return 0; 2588b3d6663SArnd Bergmann } 2598b3d6663SArnd Bergmann 2608b3d6663SArnd Bergmann static ssize_t 261bf1ab978SDwayne Grant McConnell __spufs_regs_read(struct spu_context *ctx, char __user *buffer, 262bf1ab978SDwayne Grant McConnell size_t size, loff_t *pos) 263bf1ab978SDwayne Grant McConnell { 264bf1ab978SDwayne Grant McConnell struct spu_lscsa *lscsa = ctx->csa.lscsa; 265bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, 266bf1ab978SDwayne Grant McConnell lscsa->gprs, sizeof lscsa->gprs); 267bf1ab978SDwayne Grant McConnell } 268bf1ab978SDwayne Grant McConnell 269bf1ab978SDwayne Grant McConnell static ssize_t 2708b3d6663SArnd Bergmann spufs_regs_read(struct file *file, char __user *buffer, 2718b3d6663SArnd Bergmann size_t size, loff_t *pos) 2728b3d6663SArnd Bergmann { 2738b3d6663SArnd Bergmann int ret; 274bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 2758b3d6663SArnd Bergmann 2768b3d6663SArnd Bergmann spu_acquire_saved(ctx); 277bf1ab978SDwayne Grant McConnell ret = __spufs_regs_read(ctx, buffer, size, pos); 2788b3d6663SArnd Bergmann spu_release(ctx); 2798b3d6663SArnd Bergmann return ret; 2808b3d6663SArnd Bergmann } 2818b3d6663SArnd Bergmann 2828b3d6663SArnd Bergmann static ssize_t 2838b3d6663SArnd Bergmann spufs_regs_write(struct file *file, const char __user *buffer, 2848b3d6663SArnd Bergmann size_t size, loff_t *pos) 2858b3d6663SArnd Bergmann { 2868b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 2878b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 2888b3d6663SArnd Bergmann int ret; 2898b3d6663SArnd Bergmann 2908b3d6663SArnd Bergmann size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); 2918b3d6663SArnd Bergmann if (size <= 0) 2928b3d6663SArnd Bergmann return -EFBIG; 2938b3d6663SArnd Bergmann *pos += size; 2948b3d6663SArnd Bergmann 2958b3d6663SArnd Bergmann spu_acquire_saved(ctx); 2968b3d6663SArnd Bergmann 2978b3d6663SArnd Bergmann ret = copy_from_user(lscsa->gprs + *pos - size, 2988b3d6663SArnd Bergmann buffer, size) ? -EFAULT : size; 2998b3d6663SArnd Bergmann 3008b3d6663SArnd Bergmann spu_release(ctx); 3018b3d6663SArnd Bergmann return ret; 3028b3d6663SArnd Bergmann } 3038b3d6663SArnd Bergmann 3045dfe4c96SArjan van de Ven static const struct file_operations spufs_regs_fops = { 3058b3d6663SArnd Bergmann .open = spufs_regs_open, 3068b3d6663SArnd Bergmann .read = spufs_regs_read, 3078b3d6663SArnd Bergmann .write = spufs_regs_write, 3088b3d6663SArnd Bergmann .llseek = generic_file_llseek, 3098b3d6663SArnd Bergmann }; 3108b3d6663SArnd Bergmann 3118b3d6663SArnd Bergmann static ssize_t 312bf1ab978SDwayne Grant McConnell __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, 313bf1ab978SDwayne Grant McConnell size_t size, loff_t * pos) 314bf1ab978SDwayne Grant McConnell { 315bf1ab978SDwayne Grant McConnell struct spu_lscsa *lscsa = ctx->csa.lscsa; 316bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, 317bf1ab978SDwayne Grant McConnell &lscsa->fpcr, sizeof(lscsa->fpcr)); 318bf1ab978SDwayne Grant McConnell } 319bf1ab978SDwayne Grant McConnell 320bf1ab978SDwayne Grant McConnell static ssize_t 3218b3d6663SArnd Bergmann spufs_fpcr_read(struct file *file, char __user * buffer, 3228b3d6663SArnd Bergmann size_t size, loff_t * pos) 3238b3d6663SArnd Bergmann { 3248b3d6663SArnd Bergmann int ret; 325bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 3268b3d6663SArnd Bergmann 3278b3d6663SArnd Bergmann spu_acquire_saved(ctx); 328bf1ab978SDwayne Grant McConnell ret = __spufs_fpcr_read(ctx, buffer, size, pos); 3298b3d6663SArnd Bergmann spu_release(ctx); 3308b3d6663SArnd Bergmann return ret; 3318b3d6663SArnd Bergmann } 3328b3d6663SArnd Bergmann 3338b3d6663SArnd Bergmann static ssize_t 3348b3d6663SArnd Bergmann spufs_fpcr_write(struct file *file, const char __user * buffer, 3358b3d6663SArnd Bergmann size_t size, loff_t * pos) 3368b3d6663SArnd Bergmann { 3378b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 3388b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 3398b3d6663SArnd Bergmann int ret; 3408b3d6663SArnd Bergmann 3418b3d6663SArnd Bergmann size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); 3428b3d6663SArnd Bergmann if (size <= 0) 3438b3d6663SArnd Bergmann return -EFBIG; 3448b3d6663SArnd Bergmann *pos += size; 3458b3d6663SArnd Bergmann 3468b3d6663SArnd Bergmann spu_acquire_saved(ctx); 3478b3d6663SArnd Bergmann 3488b3d6663SArnd Bergmann ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, 3498b3d6663SArnd Bergmann buffer, size) ? -EFAULT : size; 3508b3d6663SArnd Bergmann 3518b3d6663SArnd Bergmann spu_release(ctx); 3528b3d6663SArnd Bergmann return ret; 3538b3d6663SArnd Bergmann } 3548b3d6663SArnd Bergmann 3555dfe4c96SArjan van de Ven static const struct file_operations spufs_fpcr_fops = { 3568b3d6663SArnd Bergmann .open = spufs_regs_open, 3578b3d6663SArnd Bergmann .read = spufs_fpcr_read, 3588b3d6663SArnd Bergmann .write = spufs_fpcr_write, 35967207b96SArnd Bergmann .llseek = generic_file_llseek, 36067207b96SArnd Bergmann }; 36167207b96SArnd Bergmann 36267207b96SArnd Bergmann /* generic open function for all pipe-like files */ 36367207b96SArnd Bergmann static int spufs_pipe_open(struct inode *inode, struct file *file) 36467207b96SArnd Bergmann { 36567207b96SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 36667207b96SArnd Bergmann file->private_data = i->i_ctx; 36767207b96SArnd Bergmann 36867207b96SArnd Bergmann return nonseekable_open(inode, file); 36967207b96SArnd Bergmann } 37067207b96SArnd Bergmann 371cdcc89bbSArnd Bergmann /* 372cdcc89bbSArnd Bergmann * Read as many bytes from the mailbox as possible, until 373cdcc89bbSArnd Bergmann * one of the conditions becomes true: 374cdcc89bbSArnd Bergmann * 375cdcc89bbSArnd Bergmann * - no more data available in the mailbox 376cdcc89bbSArnd Bergmann * - end of the user provided buffer 377cdcc89bbSArnd Bergmann * - end of the mapped area 378cdcc89bbSArnd Bergmann */ 37967207b96SArnd Bergmann static ssize_t spufs_mbox_read(struct file *file, char __user *buf, 38067207b96SArnd Bergmann size_t len, loff_t *pos) 38167207b96SArnd Bergmann { 3828b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 383cdcc89bbSArnd Bergmann u32 mbox_data, __user *udata; 384cdcc89bbSArnd Bergmann ssize_t count; 38567207b96SArnd Bergmann 38667207b96SArnd Bergmann if (len < 4) 38767207b96SArnd Bergmann return -EINVAL; 38867207b96SArnd Bergmann 389cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_WRITE, buf, len)) 39067207b96SArnd Bergmann return -EFAULT; 39167207b96SArnd Bergmann 392cdcc89bbSArnd Bergmann udata = (void __user *)buf; 393cdcc89bbSArnd Bergmann 394cdcc89bbSArnd Bergmann spu_acquire(ctx); 395274cef5eSArnd Bergmann for (count = 0; (count + 4) <= len; count += 4, udata++) { 396cdcc89bbSArnd Bergmann int ret; 397cdcc89bbSArnd Bergmann ret = ctx->ops->mbox_read(ctx, &mbox_data); 398cdcc89bbSArnd Bergmann if (ret == 0) 399cdcc89bbSArnd Bergmann break; 400cdcc89bbSArnd Bergmann 401cdcc89bbSArnd Bergmann /* 402cdcc89bbSArnd Bergmann * at the end of the mapped area, we can fault 403cdcc89bbSArnd Bergmann * but still need to return the data we have 404cdcc89bbSArnd Bergmann * read successfully so far. 405cdcc89bbSArnd Bergmann */ 406cdcc89bbSArnd Bergmann ret = __put_user(mbox_data, udata); 407cdcc89bbSArnd Bergmann if (ret) { 408cdcc89bbSArnd Bergmann if (!count) 409cdcc89bbSArnd Bergmann count = -EFAULT; 410cdcc89bbSArnd Bergmann break; 411cdcc89bbSArnd Bergmann } 412cdcc89bbSArnd Bergmann } 413cdcc89bbSArnd Bergmann spu_release(ctx); 414cdcc89bbSArnd Bergmann 415cdcc89bbSArnd Bergmann if (!count) 416cdcc89bbSArnd Bergmann count = -EAGAIN; 417cdcc89bbSArnd Bergmann 418cdcc89bbSArnd Bergmann return count; 41967207b96SArnd Bergmann } 42067207b96SArnd Bergmann 4215dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_fops = { 42267207b96SArnd Bergmann .open = spufs_pipe_open, 42367207b96SArnd Bergmann .read = spufs_mbox_read, 42467207b96SArnd Bergmann }; 42567207b96SArnd Bergmann 42667207b96SArnd Bergmann static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, 42767207b96SArnd Bergmann size_t len, loff_t *pos) 42867207b96SArnd Bergmann { 4298b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 43067207b96SArnd Bergmann u32 mbox_stat; 43167207b96SArnd Bergmann 43267207b96SArnd Bergmann if (len < 4) 43367207b96SArnd Bergmann return -EINVAL; 43467207b96SArnd Bergmann 4358b3d6663SArnd Bergmann spu_acquire(ctx); 4368b3d6663SArnd Bergmann 4378b3d6663SArnd Bergmann mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; 4388b3d6663SArnd Bergmann 4398b3d6663SArnd Bergmann spu_release(ctx); 44067207b96SArnd Bergmann 44167207b96SArnd Bergmann if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) 44267207b96SArnd Bergmann return -EFAULT; 44367207b96SArnd Bergmann 44467207b96SArnd Bergmann return 4; 44567207b96SArnd Bergmann } 44667207b96SArnd Bergmann 4475dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_stat_fops = { 44867207b96SArnd Bergmann .open = spufs_pipe_open, 44967207b96SArnd Bergmann .read = spufs_mbox_stat_read, 45067207b96SArnd Bergmann }; 45167207b96SArnd Bergmann 45267207b96SArnd Bergmann /* low-level ibox access function */ 4538b3d6663SArnd Bergmann size_t spu_ibox_read(struct spu_context *ctx, u32 *data) 45467207b96SArnd Bergmann { 4558b3d6663SArnd Bergmann return ctx->ops->ibox_read(ctx, data); 45667207b96SArnd Bergmann } 45767207b96SArnd Bergmann 45867207b96SArnd Bergmann static int spufs_ibox_fasync(int fd, struct file *file, int on) 45967207b96SArnd Bergmann { 4608b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 4618b3d6663SArnd Bergmann 4628b3d6663SArnd Bergmann return fasync_helper(fd, file, on, &ctx->ibox_fasync); 4638b3d6663SArnd Bergmann } 4648b3d6663SArnd Bergmann 4658b3d6663SArnd Bergmann /* interrupt-level ibox callback function. */ 4668b3d6663SArnd Bergmann void spufs_ibox_callback(struct spu *spu) 4678b3d6663SArnd Bergmann { 4688b3d6663SArnd Bergmann struct spu_context *ctx = spu->ctx; 4698b3d6663SArnd Bergmann 4708b3d6663SArnd Bergmann wake_up_all(&ctx->ibox_wq); 4718b3d6663SArnd Bergmann kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); 47267207b96SArnd Bergmann } 47367207b96SArnd Bergmann 474cdcc89bbSArnd Bergmann /* 475cdcc89bbSArnd Bergmann * Read as many bytes from the interrupt mailbox as possible, until 476cdcc89bbSArnd Bergmann * one of the conditions becomes true: 477cdcc89bbSArnd Bergmann * 478cdcc89bbSArnd Bergmann * - no more data available in the mailbox 479cdcc89bbSArnd Bergmann * - end of the user provided buffer 480cdcc89bbSArnd Bergmann * - end of the mapped area 481cdcc89bbSArnd Bergmann * 482cdcc89bbSArnd Bergmann * If the file is opened without O_NONBLOCK, we wait here until 483cdcc89bbSArnd Bergmann * any data is available, but return when we have been able to 484cdcc89bbSArnd Bergmann * read something. 485cdcc89bbSArnd Bergmann */ 48667207b96SArnd Bergmann static ssize_t spufs_ibox_read(struct file *file, char __user *buf, 48767207b96SArnd Bergmann size_t len, loff_t *pos) 48867207b96SArnd Bergmann { 4898b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 490cdcc89bbSArnd Bergmann u32 ibox_data, __user *udata; 491cdcc89bbSArnd Bergmann ssize_t count; 49267207b96SArnd Bergmann 49367207b96SArnd Bergmann if (len < 4) 49467207b96SArnd Bergmann return -EINVAL; 49567207b96SArnd Bergmann 496cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_WRITE, buf, len)) 497cdcc89bbSArnd Bergmann return -EFAULT; 498cdcc89bbSArnd Bergmann 499cdcc89bbSArnd Bergmann udata = (void __user *)buf; 500cdcc89bbSArnd Bergmann 5018b3d6663SArnd Bergmann spu_acquire(ctx); 50267207b96SArnd Bergmann 503cdcc89bbSArnd Bergmann /* wait only for the first element */ 504cdcc89bbSArnd Bergmann count = 0; 50567207b96SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 5068b3d6663SArnd Bergmann if (!spu_ibox_read(ctx, &ibox_data)) 507cdcc89bbSArnd Bergmann count = -EAGAIN; 50867207b96SArnd Bergmann } else { 509cdcc89bbSArnd Bergmann count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); 510cdcc89bbSArnd Bergmann } 511cdcc89bbSArnd Bergmann if (count) 512cdcc89bbSArnd Bergmann goto out; 513cdcc89bbSArnd Bergmann 514cdcc89bbSArnd Bergmann /* if we can't write at all, return -EFAULT */ 515cdcc89bbSArnd Bergmann count = __put_user(ibox_data, udata); 516cdcc89bbSArnd Bergmann if (count) 517cdcc89bbSArnd Bergmann goto out; 518cdcc89bbSArnd Bergmann 519cdcc89bbSArnd Bergmann for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { 520cdcc89bbSArnd Bergmann int ret; 521cdcc89bbSArnd Bergmann ret = ctx->ops->ibox_read(ctx, &ibox_data); 522cdcc89bbSArnd Bergmann if (ret == 0) 523cdcc89bbSArnd Bergmann break; 524cdcc89bbSArnd Bergmann /* 525cdcc89bbSArnd Bergmann * at the end of the mapped area, we can fault 526cdcc89bbSArnd Bergmann * but still need to return the data we have 527cdcc89bbSArnd Bergmann * read successfully so far. 528cdcc89bbSArnd Bergmann */ 529cdcc89bbSArnd Bergmann ret = __put_user(ibox_data, udata); 530cdcc89bbSArnd Bergmann if (ret) 531cdcc89bbSArnd Bergmann break; 53267207b96SArnd Bergmann } 53367207b96SArnd Bergmann 534cdcc89bbSArnd Bergmann out: 5358b3d6663SArnd Bergmann spu_release(ctx); 5368b3d6663SArnd Bergmann 537cdcc89bbSArnd Bergmann return count; 53867207b96SArnd Bergmann } 53967207b96SArnd Bergmann 54067207b96SArnd Bergmann static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) 54167207b96SArnd Bergmann { 5428b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 54367207b96SArnd Bergmann unsigned int mask; 54467207b96SArnd Bergmann 5458b3d6663SArnd Bergmann poll_wait(file, &ctx->ibox_wq, wait); 54667207b96SArnd Bergmann 5473a843d7cSArnd Bergmann spu_acquire(ctx); 5483a843d7cSArnd Bergmann mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); 5493a843d7cSArnd Bergmann spu_release(ctx); 55067207b96SArnd Bergmann 55167207b96SArnd Bergmann return mask; 55267207b96SArnd Bergmann } 55367207b96SArnd Bergmann 5545dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_fops = { 55567207b96SArnd Bergmann .open = spufs_pipe_open, 55667207b96SArnd Bergmann .read = spufs_ibox_read, 55767207b96SArnd Bergmann .poll = spufs_ibox_poll, 55867207b96SArnd Bergmann .fasync = spufs_ibox_fasync, 55967207b96SArnd Bergmann }; 56067207b96SArnd Bergmann 56167207b96SArnd Bergmann static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, 56267207b96SArnd Bergmann size_t len, loff_t *pos) 56367207b96SArnd Bergmann { 5648b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 56567207b96SArnd Bergmann u32 ibox_stat; 56667207b96SArnd Bergmann 56767207b96SArnd Bergmann if (len < 4) 56867207b96SArnd Bergmann return -EINVAL; 56967207b96SArnd Bergmann 5708b3d6663SArnd Bergmann spu_acquire(ctx); 5718b3d6663SArnd Bergmann ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; 5728b3d6663SArnd Bergmann spu_release(ctx); 57367207b96SArnd Bergmann 57467207b96SArnd Bergmann if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) 57567207b96SArnd Bergmann return -EFAULT; 57667207b96SArnd Bergmann 57767207b96SArnd Bergmann return 4; 57867207b96SArnd Bergmann } 57967207b96SArnd Bergmann 5805dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_stat_fops = { 58167207b96SArnd Bergmann .open = spufs_pipe_open, 58267207b96SArnd Bergmann .read = spufs_ibox_stat_read, 58367207b96SArnd Bergmann }; 58467207b96SArnd Bergmann 58567207b96SArnd Bergmann /* low-level mailbox write */ 5868b3d6663SArnd Bergmann size_t spu_wbox_write(struct spu_context *ctx, u32 data) 58767207b96SArnd Bergmann { 5888b3d6663SArnd Bergmann return ctx->ops->wbox_write(ctx, data); 58967207b96SArnd Bergmann } 59067207b96SArnd Bergmann 59167207b96SArnd Bergmann static int spufs_wbox_fasync(int fd, struct file *file, int on) 59267207b96SArnd Bergmann { 5938b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 5948b3d6663SArnd Bergmann int ret; 5958b3d6663SArnd Bergmann 5968b3d6663SArnd Bergmann ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); 5978b3d6663SArnd Bergmann 5988b3d6663SArnd Bergmann return ret; 5998b3d6663SArnd Bergmann } 6008b3d6663SArnd Bergmann 6018b3d6663SArnd Bergmann /* interrupt-level wbox callback function. */ 6028b3d6663SArnd Bergmann void spufs_wbox_callback(struct spu *spu) 6038b3d6663SArnd Bergmann { 6048b3d6663SArnd Bergmann struct spu_context *ctx = spu->ctx; 6058b3d6663SArnd Bergmann 6068b3d6663SArnd Bergmann wake_up_all(&ctx->wbox_wq); 6078b3d6663SArnd Bergmann kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); 60867207b96SArnd Bergmann } 60967207b96SArnd Bergmann 610cdcc89bbSArnd Bergmann /* 611cdcc89bbSArnd Bergmann * Write as many bytes to the interrupt mailbox as possible, until 612cdcc89bbSArnd Bergmann * one of the conditions becomes true: 613cdcc89bbSArnd Bergmann * 614cdcc89bbSArnd Bergmann * - the mailbox is full 615cdcc89bbSArnd Bergmann * - end of the user provided buffer 616cdcc89bbSArnd Bergmann * - end of the mapped area 617cdcc89bbSArnd Bergmann * 618cdcc89bbSArnd Bergmann * If the file is opened without O_NONBLOCK, we wait here until 619cdcc89bbSArnd Bergmann * space is availabyl, but return when we have been able to 620cdcc89bbSArnd Bergmann * write something. 621cdcc89bbSArnd Bergmann */ 62267207b96SArnd Bergmann static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, 62367207b96SArnd Bergmann size_t len, loff_t *pos) 62467207b96SArnd Bergmann { 6258b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 626cdcc89bbSArnd Bergmann u32 wbox_data, __user *udata; 627cdcc89bbSArnd Bergmann ssize_t count; 62867207b96SArnd Bergmann 62967207b96SArnd Bergmann if (len < 4) 63067207b96SArnd Bergmann return -EINVAL; 63167207b96SArnd Bergmann 632cdcc89bbSArnd Bergmann udata = (void __user *)buf; 633cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_READ, buf, len)) 634cdcc89bbSArnd Bergmann return -EFAULT; 635cdcc89bbSArnd Bergmann 636cdcc89bbSArnd Bergmann if (__get_user(wbox_data, udata)) 63767207b96SArnd Bergmann return -EFAULT; 63867207b96SArnd Bergmann 6398b3d6663SArnd Bergmann spu_acquire(ctx); 6408b3d6663SArnd Bergmann 641cdcc89bbSArnd Bergmann /* 642cdcc89bbSArnd Bergmann * make sure we can at least write one element, by waiting 643cdcc89bbSArnd Bergmann * in case of !O_NONBLOCK 644cdcc89bbSArnd Bergmann */ 645cdcc89bbSArnd Bergmann count = 0; 64667207b96SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 6478b3d6663SArnd Bergmann if (!spu_wbox_write(ctx, wbox_data)) 648cdcc89bbSArnd Bergmann count = -EAGAIN; 64967207b96SArnd Bergmann } else { 650cdcc89bbSArnd Bergmann count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); 65167207b96SArnd Bergmann } 65267207b96SArnd Bergmann 653cdcc89bbSArnd Bergmann if (count) 654cdcc89bbSArnd Bergmann goto out; 6558b3d6663SArnd Bergmann 656cdcc89bbSArnd Bergmann /* write aѕ much as possible */ 657cdcc89bbSArnd Bergmann for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { 658cdcc89bbSArnd Bergmann int ret; 659cdcc89bbSArnd Bergmann ret = __get_user(wbox_data, udata); 660cdcc89bbSArnd Bergmann if (ret) 661cdcc89bbSArnd Bergmann break; 662cdcc89bbSArnd Bergmann 663cdcc89bbSArnd Bergmann ret = spu_wbox_write(ctx, wbox_data); 664cdcc89bbSArnd Bergmann if (ret == 0) 665cdcc89bbSArnd Bergmann break; 666cdcc89bbSArnd Bergmann } 667cdcc89bbSArnd Bergmann 668cdcc89bbSArnd Bergmann out: 669cdcc89bbSArnd Bergmann spu_release(ctx); 670cdcc89bbSArnd Bergmann return count; 67167207b96SArnd Bergmann } 67267207b96SArnd Bergmann 67367207b96SArnd Bergmann static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) 67467207b96SArnd Bergmann { 6758b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 67667207b96SArnd Bergmann unsigned int mask; 67767207b96SArnd Bergmann 6788b3d6663SArnd Bergmann poll_wait(file, &ctx->wbox_wq, wait); 67967207b96SArnd Bergmann 6803a843d7cSArnd Bergmann spu_acquire(ctx); 6813a843d7cSArnd Bergmann mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); 6823a843d7cSArnd Bergmann spu_release(ctx); 68367207b96SArnd Bergmann 68467207b96SArnd Bergmann return mask; 68567207b96SArnd Bergmann } 68667207b96SArnd Bergmann 6875dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_fops = { 68867207b96SArnd Bergmann .open = spufs_pipe_open, 68967207b96SArnd Bergmann .write = spufs_wbox_write, 69067207b96SArnd Bergmann .poll = spufs_wbox_poll, 69167207b96SArnd Bergmann .fasync = spufs_wbox_fasync, 69267207b96SArnd Bergmann }; 69367207b96SArnd Bergmann 69467207b96SArnd Bergmann static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, 69567207b96SArnd Bergmann size_t len, loff_t *pos) 69667207b96SArnd Bergmann { 6978b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 69867207b96SArnd Bergmann u32 wbox_stat; 69967207b96SArnd Bergmann 70067207b96SArnd Bergmann if (len < 4) 70167207b96SArnd Bergmann return -EINVAL; 70267207b96SArnd Bergmann 7038b3d6663SArnd Bergmann spu_acquire(ctx); 7048b3d6663SArnd Bergmann wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; 7058b3d6663SArnd Bergmann spu_release(ctx); 70667207b96SArnd Bergmann 70767207b96SArnd Bergmann if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) 70867207b96SArnd Bergmann return -EFAULT; 70967207b96SArnd Bergmann 71067207b96SArnd Bergmann return 4; 71167207b96SArnd Bergmann } 71267207b96SArnd Bergmann 7135dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_stat_fops = { 71467207b96SArnd Bergmann .open = spufs_pipe_open, 71567207b96SArnd Bergmann .read = spufs_wbox_stat_read, 71667207b96SArnd Bergmann }; 71767207b96SArnd Bergmann 7186df10a82SMark Nutter static int spufs_signal1_open(struct inode *inode, struct file *file) 7196df10a82SMark Nutter { 7206df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 7216df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 7226df10a82SMark Nutter file->private_data = ctx; 7236df10a82SMark Nutter ctx->signal1 = inode->i_mapping; 72417e0e270SBenjamin Herrenschmidt smp_wmb(); 7256df10a82SMark Nutter return nonseekable_open(inode, file); 7266df10a82SMark Nutter } 7276df10a82SMark Nutter 728bf1ab978SDwayne Grant McConnell static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, 72967207b96SArnd Bergmann size_t len, loff_t *pos) 73067207b96SArnd Bergmann { 73117f88cebSDwayne Grant McConnell int ret = 0; 73267207b96SArnd Bergmann u32 data; 73367207b96SArnd Bergmann 73467207b96SArnd Bergmann if (len < 4) 73567207b96SArnd Bergmann return -EINVAL; 73667207b96SArnd Bergmann 73717f88cebSDwayne Grant McConnell if (ctx->csa.spu_chnlcnt_RW[3]) { 73817f88cebSDwayne Grant McConnell data = ctx->csa.spu_chnldata_RW[3]; 73917f88cebSDwayne Grant McConnell ret = 4; 74017f88cebSDwayne Grant McConnell } 7418b3d6663SArnd Bergmann 74217f88cebSDwayne Grant McConnell if (!ret) 74317f88cebSDwayne Grant McConnell goto out; 74417f88cebSDwayne Grant McConnell 74567207b96SArnd Bergmann if (copy_to_user(buf, &data, 4)) 74667207b96SArnd Bergmann return -EFAULT; 74767207b96SArnd Bergmann 74817f88cebSDwayne Grant McConnell out: 74917f88cebSDwayne Grant McConnell return ret; 75067207b96SArnd Bergmann } 75167207b96SArnd Bergmann 752bf1ab978SDwayne Grant McConnell static ssize_t spufs_signal1_read(struct file *file, char __user *buf, 753bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 754bf1ab978SDwayne Grant McConnell { 755bf1ab978SDwayne Grant McConnell int ret; 756bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 757bf1ab978SDwayne Grant McConnell 758bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 759bf1ab978SDwayne Grant McConnell ret = __spufs_signal1_read(ctx, buf, len, pos); 760bf1ab978SDwayne Grant McConnell spu_release(ctx); 761bf1ab978SDwayne Grant McConnell 762bf1ab978SDwayne Grant McConnell return ret; 763bf1ab978SDwayne Grant McConnell } 764bf1ab978SDwayne Grant McConnell 76567207b96SArnd Bergmann static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, 76667207b96SArnd Bergmann size_t len, loff_t *pos) 76767207b96SArnd Bergmann { 76867207b96SArnd Bergmann struct spu_context *ctx; 76967207b96SArnd Bergmann u32 data; 77067207b96SArnd Bergmann 77167207b96SArnd Bergmann ctx = file->private_data; 77267207b96SArnd Bergmann 77367207b96SArnd Bergmann if (len < 4) 77467207b96SArnd Bergmann return -EINVAL; 77567207b96SArnd Bergmann 77667207b96SArnd Bergmann if (copy_from_user(&data, buf, 4)) 77767207b96SArnd Bergmann return -EFAULT; 77867207b96SArnd Bergmann 7798b3d6663SArnd Bergmann spu_acquire(ctx); 7808b3d6663SArnd Bergmann ctx->ops->signal1_write(ctx, data); 7818b3d6663SArnd Bergmann spu_release(ctx); 78267207b96SArnd Bergmann 78367207b96SArnd Bergmann return 4; 78467207b96SArnd Bergmann } 78567207b96SArnd Bergmann 78678bde53eSBenjamin Herrenschmidt static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma, 78778bde53eSBenjamin Herrenschmidt unsigned long address) 7886df10a82SMark Nutter { 78927d5bf2aSBenjamin Herrenschmidt #if PAGE_SIZE == 0x1000 79078bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x14000, 0x1000); 79127d5bf2aSBenjamin Herrenschmidt #elif PAGE_SIZE == 0x10000 79227d5bf2aSBenjamin Herrenschmidt /* For 64k pages, both signal1 and signal2 can be used to mmap the whole 79327d5bf2aSBenjamin Herrenschmidt * signal 1 and 2 area 79427d5bf2aSBenjamin Herrenschmidt */ 79578bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); 79627d5bf2aSBenjamin Herrenschmidt #else 79727d5bf2aSBenjamin Herrenschmidt #error unsupported page size 79827d5bf2aSBenjamin Herrenschmidt #endif 7996df10a82SMark Nutter } 8006df10a82SMark Nutter 8016df10a82SMark Nutter static struct vm_operations_struct spufs_signal1_mmap_vmops = { 80278bde53eSBenjamin Herrenschmidt .nopfn = spufs_signal1_mmap_nopfn, 8036df10a82SMark Nutter }; 8046df10a82SMark Nutter 8056df10a82SMark Nutter static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) 8066df10a82SMark Nutter { 8076df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 8086df10a82SMark Nutter return -EINVAL; 8096df10a82SMark Nutter 81078bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 8116df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 81223cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 8136df10a82SMark Nutter 8146df10a82SMark Nutter vma->vm_ops = &spufs_signal1_mmap_vmops; 8156df10a82SMark Nutter return 0; 8166df10a82SMark Nutter } 8176df10a82SMark Nutter 8185dfe4c96SArjan van de Ven static const struct file_operations spufs_signal1_fops = { 8196df10a82SMark Nutter .open = spufs_signal1_open, 82067207b96SArnd Bergmann .read = spufs_signal1_read, 82167207b96SArnd Bergmann .write = spufs_signal1_write, 8226df10a82SMark Nutter .mmap = spufs_signal1_mmap, 82367207b96SArnd Bergmann }; 82467207b96SArnd Bergmann 8256df10a82SMark Nutter static int spufs_signal2_open(struct inode *inode, struct file *file) 8266df10a82SMark Nutter { 8276df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 8286df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 8296df10a82SMark Nutter file->private_data = ctx; 8306df10a82SMark Nutter ctx->signal2 = inode->i_mapping; 83117e0e270SBenjamin Herrenschmidt smp_wmb(); 8326df10a82SMark Nutter return nonseekable_open(inode, file); 8336df10a82SMark Nutter } 8346df10a82SMark Nutter 835bf1ab978SDwayne Grant McConnell static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, 83667207b96SArnd Bergmann size_t len, loff_t *pos) 83767207b96SArnd Bergmann { 83817f88cebSDwayne Grant McConnell int ret = 0; 83967207b96SArnd Bergmann u32 data; 84067207b96SArnd Bergmann 84167207b96SArnd Bergmann if (len < 4) 84267207b96SArnd Bergmann return -EINVAL; 84367207b96SArnd Bergmann 84417f88cebSDwayne Grant McConnell if (ctx->csa.spu_chnlcnt_RW[4]) { 84517f88cebSDwayne Grant McConnell data = ctx->csa.spu_chnldata_RW[4]; 84617f88cebSDwayne Grant McConnell ret = 4; 84717f88cebSDwayne Grant McConnell } 8488b3d6663SArnd Bergmann 84917f88cebSDwayne Grant McConnell if (!ret) 85017f88cebSDwayne Grant McConnell goto out; 85117f88cebSDwayne Grant McConnell 85267207b96SArnd Bergmann if (copy_to_user(buf, &data, 4)) 85367207b96SArnd Bergmann return -EFAULT; 85467207b96SArnd Bergmann 85517f88cebSDwayne Grant McConnell out: 856bf1ab978SDwayne Grant McConnell return ret; 857bf1ab978SDwayne Grant McConnell } 858bf1ab978SDwayne Grant McConnell 859bf1ab978SDwayne Grant McConnell static ssize_t spufs_signal2_read(struct file *file, char __user *buf, 860bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 861bf1ab978SDwayne Grant McConnell { 862bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 863bf1ab978SDwayne Grant McConnell int ret; 864bf1ab978SDwayne Grant McConnell 865bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 866bf1ab978SDwayne Grant McConnell ret = __spufs_signal2_read(ctx, buf, len, pos); 867bf1ab978SDwayne Grant McConnell spu_release(ctx); 868bf1ab978SDwayne Grant McConnell 869bf1ab978SDwayne Grant McConnell return ret; 87067207b96SArnd Bergmann } 87167207b96SArnd Bergmann 87267207b96SArnd Bergmann static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, 87367207b96SArnd Bergmann size_t len, loff_t *pos) 87467207b96SArnd Bergmann { 87567207b96SArnd Bergmann struct spu_context *ctx; 87667207b96SArnd Bergmann u32 data; 87767207b96SArnd Bergmann 87867207b96SArnd Bergmann ctx = file->private_data; 87967207b96SArnd Bergmann 88067207b96SArnd Bergmann if (len < 4) 88167207b96SArnd Bergmann return -EINVAL; 88267207b96SArnd Bergmann 88367207b96SArnd Bergmann if (copy_from_user(&data, buf, 4)) 88467207b96SArnd Bergmann return -EFAULT; 88567207b96SArnd Bergmann 8868b3d6663SArnd Bergmann spu_acquire(ctx); 8878b3d6663SArnd Bergmann ctx->ops->signal2_write(ctx, data); 8888b3d6663SArnd Bergmann spu_release(ctx); 88967207b96SArnd Bergmann 89067207b96SArnd Bergmann return 4; 89167207b96SArnd Bergmann } 89267207b96SArnd Bergmann 89327d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 89478bde53eSBenjamin Herrenschmidt static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma, 89578bde53eSBenjamin Herrenschmidt unsigned long address) 8966df10a82SMark Nutter { 89727d5bf2aSBenjamin Herrenschmidt #if PAGE_SIZE == 0x1000 89878bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000); 89927d5bf2aSBenjamin Herrenschmidt #elif PAGE_SIZE == 0x10000 90027d5bf2aSBenjamin Herrenschmidt /* For 64k pages, both signal1 and signal2 can be used to mmap the whole 90127d5bf2aSBenjamin Herrenschmidt * signal 1 and 2 area 90227d5bf2aSBenjamin Herrenschmidt */ 90378bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); 90427d5bf2aSBenjamin Herrenschmidt #else 90527d5bf2aSBenjamin Herrenschmidt #error unsupported page size 90627d5bf2aSBenjamin Herrenschmidt #endif 9076df10a82SMark Nutter } 9086df10a82SMark Nutter 9096df10a82SMark Nutter static struct vm_operations_struct spufs_signal2_mmap_vmops = { 91078bde53eSBenjamin Herrenschmidt .nopfn = spufs_signal2_mmap_nopfn, 9116df10a82SMark Nutter }; 9126df10a82SMark Nutter 9136df10a82SMark Nutter static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) 9146df10a82SMark Nutter { 9156df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 9166df10a82SMark Nutter return -EINVAL; 9176df10a82SMark Nutter 91878bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 9196df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 92023cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 9216df10a82SMark Nutter 9226df10a82SMark Nutter vma->vm_ops = &spufs_signal2_mmap_vmops; 9236df10a82SMark Nutter return 0; 9246df10a82SMark Nutter } 92527d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 92627d5bf2aSBenjamin Herrenschmidt #define spufs_signal2_mmap NULL 92727d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 9286df10a82SMark Nutter 9295dfe4c96SArjan van de Ven static const struct file_operations spufs_signal2_fops = { 9306df10a82SMark Nutter .open = spufs_signal2_open, 93167207b96SArnd Bergmann .read = spufs_signal2_read, 93267207b96SArnd Bergmann .write = spufs_signal2_write, 9336df10a82SMark Nutter .mmap = spufs_signal2_mmap, 93467207b96SArnd Bergmann }; 93567207b96SArnd Bergmann 93667207b96SArnd Bergmann static void spufs_signal1_type_set(void *data, u64 val) 93767207b96SArnd Bergmann { 93867207b96SArnd Bergmann struct spu_context *ctx = data; 93967207b96SArnd Bergmann 9408b3d6663SArnd Bergmann spu_acquire(ctx); 9418b3d6663SArnd Bergmann ctx->ops->signal1_type_set(ctx, val); 9428b3d6663SArnd Bergmann spu_release(ctx); 94367207b96SArnd Bergmann } 94467207b96SArnd Bergmann 945bf1ab978SDwayne Grant McConnell static u64 __spufs_signal1_type_get(void *data) 946bf1ab978SDwayne Grant McConnell { 947bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 948bf1ab978SDwayne Grant McConnell return ctx->ops->signal1_type_get(ctx); 949bf1ab978SDwayne Grant McConnell } 950bf1ab978SDwayne Grant McConnell 95167207b96SArnd Bergmann static u64 spufs_signal1_type_get(void *data) 95267207b96SArnd Bergmann { 95367207b96SArnd Bergmann struct spu_context *ctx = data; 9548b3d6663SArnd Bergmann u64 ret; 9558b3d6663SArnd Bergmann 9568b3d6663SArnd Bergmann spu_acquire(ctx); 957bf1ab978SDwayne Grant McConnell ret = __spufs_signal1_type_get(data); 9588b3d6663SArnd Bergmann spu_release(ctx); 9598b3d6663SArnd Bergmann 9608b3d6663SArnd Bergmann return ret; 96167207b96SArnd Bergmann } 96267207b96SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, 96367207b96SArnd Bergmann spufs_signal1_type_set, "%llu"); 96467207b96SArnd Bergmann 96567207b96SArnd Bergmann static void spufs_signal2_type_set(void *data, u64 val) 96667207b96SArnd Bergmann { 96767207b96SArnd Bergmann struct spu_context *ctx = data; 96867207b96SArnd Bergmann 9698b3d6663SArnd Bergmann spu_acquire(ctx); 9708b3d6663SArnd Bergmann ctx->ops->signal2_type_set(ctx, val); 9718b3d6663SArnd Bergmann spu_release(ctx); 97267207b96SArnd Bergmann } 97367207b96SArnd Bergmann 974bf1ab978SDwayne Grant McConnell static u64 __spufs_signal2_type_get(void *data) 975bf1ab978SDwayne Grant McConnell { 976bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 977bf1ab978SDwayne Grant McConnell return ctx->ops->signal2_type_get(ctx); 978bf1ab978SDwayne Grant McConnell } 979bf1ab978SDwayne Grant McConnell 98067207b96SArnd Bergmann static u64 spufs_signal2_type_get(void *data) 98167207b96SArnd Bergmann { 98267207b96SArnd Bergmann struct spu_context *ctx = data; 9838b3d6663SArnd Bergmann u64 ret; 9848b3d6663SArnd Bergmann 9858b3d6663SArnd Bergmann spu_acquire(ctx); 986bf1ab978SDwayne Grant McConnell ret = __spufs_signal2_type_get(data); 9878b3d6663SArnd Bergmann spu_release(ctx); 9888b3d6663SArnd Bergmann 9898b3d6663SArnd Bergmann return ret; 99067207b96SArnd Bergmann } 99167207b96SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, 99267207b96SArnd Bergmann spufs_signal2_type_set, "%llu"); 99367207b96SArnd Bergmann 99427d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 99578bde53eSBenjamin Herrenschmidt static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma, 99678bde53eSBenjamin Herrenschmidt unsigned long address) 997d9379c4bSarnd@arndb.de { 99878bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x1000); 999d9379c4bSarnd@arndb.de } 1000d9379c4bSarnd@arndb.de 1001d9379c4bSarnd@arndb.de static struct vm_operations_struct spufs_mss_mmap_vmops = { 100278bde53eSBenjamin Herrenschmidt .nopfn = spufs_mss_mmap_nopfn, 1003d9379c4bSarnd@arndb.de }; 1004d9379c4bSarnd@arndb.de 1005d9379c4bSarnd@arndb.de /* 1006d9379c4bSarnd@arndb.de * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 1007d9379c4bSarnd@arndb.de */ 1008d9379c4bSarnd@arndb.de static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) 1009d9379c4bSarnd@arndb.de { 1010d9379c4bSarnd@arndb.de if (!(vma->vm_flags & VM_SHARED)) 1011d9379c4bSarnd@arndb.de return -EINVAL; 1012d9379c4bSarnd@arndb.de 101378bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 1014d9379c4bSarnd@arndb.de vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 101523cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 1016d9379c4bSarnd@arndb.de 1017d9379c4bSarnd@arndb.de vma->vm_ops = &spufs_mss_mmap_vmops; 1018d9379c4bSarnd@arndb.de return 0; 1019d9379c4bSarnd@arndb.de } 102027d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 102127d5bf2aSBenjamin Herrenschmidt #define spufs_mss_mmap NULL 102227d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1023d9379c4bSarnd@arndb.de 1024d9379c4bSarnd@arndb.de static int spufs_mss_open(struct inode *inode, struct file *file) 1025d9379c4bSarnd@arndb.de { 1026d9379c4bSarnd@arndb.de struct spufs_inode_info *i = SPUFS_I(inode); 102717e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 1028d9379c4bSarnd@arndb.de 1029d9379c4bSarnd@arndb.de file->private_data = i->i_ctx; 103017e0e270SBenjamin Herrenschmidt ctx->mss = inode->i_mapping; 103117e0e270SBenjamin Herrenschmidt smp_wmb(); 1032d9379c4bSarnd@arndb.de return nonseekable_open(inode, file); 1033d9379c4bSarnd@arndb.de } 1034d9379c4bSarnd@arndb.de 10355dfe4c96SArjan van de Ven static const struct file_operations spufs_mss_fops = { 1036d9379c4bSarnd@arndb.de .open = spufs_mss_open, 1037d9379c4bSarnd@arndb.de .mmap = spufs_mss_mmap, 103827d5bf2aSBenjamin Herrenschmidt }; 103927d5bf2aSBenjamin Herrenschmidt 104078bde53eSBenjamin Herrenschmidt static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma, 104178bde53eSBenjamin Herrenschmidt unsigned long address) 104227d5bf2aSBenjamin Herrenschmidt { 104378bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x20000); 104427d5bf2aSBenjamin Herrenschmidt } 104527d5bf2aSBenjamin Herrenschmidt 104627d5bf2aSBenjamin Herrenschmidt static struct vm_operations_struct spufs_psmap_mmap_vmops = { 104778bde53eSBenjamin Herrenschmidt .nopfn = spufs_psmap_mmap_nopfn, 104827d5bf2aSBenjamin Herrenschmidt }; 104927d5bf2aSBenjamin Herrenschmidt 105027d5bf2aSBenjamin Herrenschmidt /* 105127d5bf2aSBenjamin Herrenschmidt * mmap support for full problem state area [0x00000 - 0x1ffff]. 105227d5bf2aSBenjamin Herrenschmidt */ 105327d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) 105427d5bf2aSBenjamin Herrenschmidt { 105527d5bf2aSBenjamin Herrenschmidt if (!(vma->vm_flags & VM_SHARED)) 105627d5bf2aSBenjamin Herrenschmidt return -EINVAL; 105727d5bf2aSBenjamin Herrenschmidt 105878bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 105927d5bf2aSBenjamin Herrenschmidt vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 106027d5bf2aSBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 106127d5bf2aSBenjamin Herrenschmidt 106227d5bf2aSBenjamin Herrenschmidt vma->vm_ops = &spufs_psmap_mmap_vmops; 106327d5bf2aSBenjamin Herrenschmidt return 0; 106427d5bf2aSBenjamin Herrenschmidt } 106527d5bf2aSBenjamin Herrenschmidt 106627d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_open(struct inode *inode, struct file *file) 106727d5bf2aSBenjamin Herrenschmidt { 106827d5bf2aSBenjamin Herrenschmidt struct spufs_inode_info *i = SPUFS_I(inode); 106917e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 107027d5bf2aSBenjamin Herrenschmidt 107127d5bf2aSBenjamin Herrenschmidt file->private_data = i->i_ctx; 107217e0e270SBenjamin Herrenschmidt ctx->psmap = inode->i_mapping; 107317e0e270SBenjamin Herrenschmidt smp_wmb(); 107427d5bf2aSBenjamin Herrenschmidt return nonseekable_open(inode, file); 107527d5bf2aSBenjamin Herrenschmidt } 107627d5bf2aSBenjamin Herrenschmidt 10775dfe4c96SArjan van de Ven static const struct file_operations spufs_psmap_fops = { 107827d5bf2aSBenjamin Herrenschmidt .open = spufs_psmap_open, 107927d5bf2aSBenjamin Herrenschmidt .mmap = spufs_psmap_mmap, 1080d9379c4bSarnd@arndb.de }; 1081d9379c4bSarnd@arndb.de 1082d9379c4bSarnd@arndb.de 108327d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 108478bde53eSBenjamin Herrenschmidt static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma, 108578bde53eSBenjamin Herrenschmidt unsigned long address) 10866df10a82SMark Nutter { 108778bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x3000, 0x1000); 10886df10a82SMark Nutter } 10896df10a82SMark Nutter 10906df10a82SMark Nutter static struct vm_operations_struct spufs_mfc_mmap_vmops = { 109178bde53eSBenjamin Herrenschmidt .nopfn = spufs_mfc_mmap_nopfn, 10926df10a82SMark Nutter }; 10936df10a82SMark Nutter 10946df10a82SMark Nutter /* 10956df10a82SMark Nutter * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 10966df10a82SMark Nutter */ 10976df10a82SMark Nutter static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) 10986df10a82SMark Nutter { 10996df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 11006df10a82SMark Nutter return -EINVAL; 11016df10a82SMark Nutter 110278bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 11036df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 110423cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 11056df10a82SMark Nutter 11066df10a82SMark Nutter vma->vm_ops = &spufs_mfc_mmap_vmops; 11076df10a82SMark Nutter return 0; 11086df10a82SMark Nutter } 110927d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 111027d5bf2aSBenjamin Herrenschmidt #define spufs_mfc_mmap NULL 111127d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1112a33a7d73SArnd Bergmann 1113a33a7d73SArnd Bergmann static int spufs_mfc_open(struct inode *inode, struct file *file) 1114a33a7d73SArnd Bergmann { 1115a33a7d73SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 1116a33a7d73SArnd Bergmann struct spu_context *ctx = i->i_ctx; 1117a33a7d73SArnd Bergmann 1118a33a7d73SArnd Bergmann /* we don't want to deal with DMA into other processes */ 1119a33a7d73SArnd Bergmann if (ctx->owner != current->mm) 1120a33a7d73SArnd Bergmann return -EINVAL; 1121a33a7d73SArnd Bergmann 1122a33a7d73SArnd Bergmann if (atomic_read(&inode->i_count) != 1) 1123a33a7d73SArnd Bergmann return -EBUSY; 1124a33a7d73SArnd Bergmann 1125a33a7d73SArnd Bergmann file->private_data = ctx; 112617e0e270SBenjamin Herrenschmidt ctx->mfc = inode->i_mapping; 112717e0e270SBenjamin Herrenschmidt smp_wmb(); 1128a33a7d73SArnd Bergmann return nonseekable_open(inode, file); 1129a33a7d73SArnd Bergmann } 1130a33a7d73SArnd Bergmann 1131a33a7d73SArnd Bergmann /* interrupt-level mfc callback function. */ 1132a33a7d73SArnd Bergmann void spufs_mfc_callback(struct spu *spu) 1133a33a7d73SArnd Bergmann { 1134a33a7d73SArnd Bergmann struct spu_context *ctx = spu->ctx; 1135a33a7d73SArnd Bergmann 1136a33a7d73SArnd Bergmann wake_up_all(&ctx->mfc_wq); 1137a33a7d73SArnd Bergmann 1138a33a7d73SArnd Bergmann pr_debug("%s %s\n", __FUNCTION__, spu->name); 1139a33a7d73SArnd Bergmann if (ctx->mfc_fasync) { 1140a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1141a33a7d73SArnd Bergmann unsigned int mask; 1142a33a7d73SArnd Bergmann 1143a33a7d73SArnd Bergmann /* no need for spu_acquire in interrupt context */ 1144a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1145a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1146a33a7d73SArnd Bergmann 1147a33a7d73SArnd Bergmann mask = 0; 1148a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1149a33a7d73SArnd Bergmann mask |= POLLOUT; 1150a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1151a33a7d73SArnd Bergmann mask |= POLLIN; 1152a33a7d73SArnd Bergmann 1153a33a7d73SArnd Bergmann kill_fasync(&ctx->mfc_fasync, SIGIO, mask); 1154a33a7d73SArnd Bergmann } 1155a33a7d73SArnd Bergmann } 1156a33a7d73SArnd Bergmann 1157a33a7d73SArnd Bergmann static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) 1158a33a7d73SArnd Bergmann { 1159a33a7d73SArnd Bergmann /* See if there is one tag group is complete */ 1160a33a7d73SArnd Bergmann /* FIXME we need locking around tagwait */ 1161a33a7d73SArnd Bergmann *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; 1162a33a7d73SArnd Bergmann ctx->tagwait &= ~*status; 1163a33a7d73SArnd Bergmann if (*status) 1164a33a7d73SArnd Bergmann return 1; 1165a33a7d73SArnd Bergmann 1166a33a7d73SArnd Bergmann /* enable interrupt waiting for any tag group, 1167a33a7d73SArnd Bergmann may silently fail if interrupts are already enabled */ 1168a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1169a33a7d73SArnd Bergmann return 0; 1170a33a7d73SArnd Bergmann } 1171a33a7d73SArnd Bergmann 1172a33a7d73SArnd Bergmann static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, 1173a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1174a33a7d73SArnd Bergmann { 1175a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1176a33a7d73SArnd Bergmann int ret = -EINVAL; 1177a33a7d73SArnd Bergmann u32 status; 1178a33a7d73SArnd Bergmann 1179a33a7d73SArnd Bergmann if (size != 4) 1180a33a7d73SArnd Bergmann goto out; 1181a33a7d73SArnd Bergmann 1182a33a7d73SArnd Bergmann spu_acquire(ctx); 1183a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1184a33a7d73SArnd Bergmann status = ctx->ops->read_mfc_tagstatus(ctx); 1185a33a7d73SArnd Bergmann if (!(status & ctx->tagwait)) 1186a33a7d73SArnd Bergmann ret = -EAGAIN; 1187a33a7d73SArnd Bergmann else 1188a33a7d73SArnd Bergmann ctx->tagwait &= ~status; 1189a33a7d73SArnd Bergmann } else { 1190a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1191a33a7d73SArnd Bergmann spufs_read_mfc_tagstatus(ctx, &status)); 1192a33a7d73SArnd Bergmann } 1193a33a7d73SArnd Bergmann spu_release(ctx); 1194a33a7d73SArnd Bergmann 1195a33a7d73SArnd Bergmann if (ret) 1196a33a7d73SArnd Bergmann goto out; 1197a33a7d73SArnd Bergmann 1198a33a7d73SArnd Bergmann ret = 4; 1199a33a7d73SArnd Bergmann if (copy_to_user(buffer, &status, 4)) 1200a33a7d73SArnd Bergmann ret = -EFAULT; 1201a33a7d73SArnd Bergmann 1202a33a7d73SArnd Bergmann out: 1203a33a7d73SArnd Bergmann return ret; 1204a33a7d73SArnd Bergmann } 1205a33a7d73SArnd Bergmann 1206a33a7d73SArnd Bergmann static int spufs_check_valid_dma(struct mfc_dma_command *cmd) 1207a33a7d73SArnd Bergmann { 1208a33a7d73SArnd Bergmann pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, 1209a33a7d73SArnd Bergmann cmd->ea, cmd->size, cmd->tag, cmd->cmd); 1210a33a7d73SArnd Bergmann 1211a33a7d73SArnd Bergmann switch (cmd->cmd) { 1212a33a7d73SArnd Bergmann case MFC_PUT_CMD: 1213a33a7d73SArnd Bergmann case MFC_PUTF_CMD: 1214a33a7d73SArnd Bergmann case MFC_PUTB_CMD: 1215a33a7d73SArnd Bergmann case MFC_GET_CMD: 1216a33a7d73SArnd Bergmann case MFC_GETF_CMD: 1217a33a7d73SArnd Bergmann case MFC_GETB_CMD: 1218a33a7d73SArnd Bergmann break; 1219a33a7d73SArnd Bergmann default: 1220a33a7d73SArnd Bergmann pr_debug("invalid DMA opcode %x\n", cmd->cmd); 1221a33a7d73SArnd Bergmann return -EIO; 1222a33a7d73SArnd Bergmann } 1223a33a7d73SArnd Bergmann 1224a33a7d73SArnd Bergmann if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { 1225a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment, ea %lx lsa %x\n", 1226a33a7d73SArnd Bergmann cmd->ea, cmd->lsa); 1227a33a7d73SArnd Bergmann return -EIO; 1228a33a7d73SArnd Bergmann } 1229a33a7d73SArnd Bergmann 1230a33a7d73SArnd Bergmann switch (cmd->size & 0xf) { 1231a33a7d73SArnd Bergmann case 1: 1232a33a7d73SArnd Bergmann break; 1233a33a7d73SArnd Bergmann case 2: 1234a33a7d73SArnd Bergmann if (cmd->lsa & 1) 1235a33a7d73SArnd Bergmann goto error; 1236a33a7d73SArnd Bergmann break; 1237a33a7d73SArnd Bergmann case 4: 1238a33a7d73SArnd Bergmann if (cmd->lsa & 3) 1239a33a7d73SArnd Bergmann goto error; 1240a33a7d73SArnd Bergmann break; 1241a33a7d73SArnd Bergmann case 8: 1242a33a7d73SArnd Bergmann if (cmd->lsa & 7) 1243a33a7d73SArnd Bergmann goto error; 1244a33a7d73SArnd Bergmann break; 1245a33a7d73SArnd Bergmann case 0: 1246a33a7d73SArnd Bergmann if (cmd->lsa & 15) 1247a33a7d73SArnd Bergmann goto error; 1248a33a7d73SArnd Bergmann break; 1249a33a7d73SArnd Bergmann error: 1250a33a7d73SArnd Bergmann default: 1251a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment %x for size %x\n", 1252a33a7d73SArnd Bergmann cmd->lsa & 0xf, cmd->size); 1253a33a7d73SArnd Bergmann return -EIO; 1254a33a7d73SArnd Bergmann } 1255a33a7d73SArnd Bergmann 1256a33a7d73SArnd Bergmann if (cmd->size > 16 * 1024) { 1257a33a7d73SArnd Bergmann pr_debug("invalid DMA size %x\n", cmd->size); 1258a33a7d73SArnd Bergmann return -EIO; 1259a33a7d73SArnd Bergmann } 1260a33a7d73SArnd Bergmann 1261a33a7d73SArnd Bergmann if (cmd->tag & 0xfff0) { 1262a33a7d73SArnd Bergmann /* we reserve the higher tag numbers for kernel use */ 1263a33a7d73SArnd Bergmann pr_debug("invalid DMA tag\n"); 1264a33a7d73SArnd Bergmann return -EIO; 1265a33a7d73SArnd Bergmann } 1266a33a7d73SArnd Bergmann 1267a33a7d73SArnd Bergmann if (cmd->class) { 1268a33a7d73SArnd Bergmann /* not supported in this version */ 1269a33a7d73SArnd Bergmann pr_debug("invalid DMA class\n"); 1270a33a7d73SArnd Bergmann return -EIO; 1271a33a7d73SArnd Bergmann } 1272a33a7d73SArnd Bergmann 1273a33a7d73SArnd Bergmann return 0; 1274a33a7d73SArnd Bergmann } 1275a33a7d73SArnd Bergmann 1276a33a7d73SArnd Bergmann static int spu_send_mfc_command(struct spu_context *ctx, 1277a33a7d73SArnd Bergmann struct mfc_dma_command cmd, 1278a33a7d73SArnd Bergmann int *error) 1279a33a7d73SArnd Bergmann { 1280a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1281a33a7d73SArnd Bergmann if (*error == -EAGAIN) { 1282a33a7d73SArnd Bergmann /* wait for any tag group to complete 1283a33a7d73SArnd Bergmann so we have space for the new command */ 1284a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1285a33a7d73SArnd Bergmann /* try again, because the queue might be 1286a33a7d73SArnd Bergmann empty again */ 1287a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1288a33a7d73SArnd Bergmann if (*error == -EAGAIN) 1289a33a7d73SArnd Bergmann return 0; 1290a33a7d73SArnd Bergmann } 1291a33a7d73SArnd Bergmann return 1; 1292a33a7d73SArnd Bergmann } 1293a33a7d73SArnd Bergmann 1294a33a7d73SArnd Bergmann static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, 1295a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1296a33a7d73SArnd Bergmann { 1297a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1298a33a7d73SArnd Bergmann struct mfc_dma_command cmd; 1299a33a7d73SArnd Bergmann int ret = -EINVAL; 1300a33a7d73SArnd Bergmann 1301a33a7d73SArnd Bergmann if (size != sizeof cmd) 1302a33a7d73SArnd Bergmann goto out; 1303a33a7d73SArnd Bergmann 1304a33a7d73SArnd Bergmann ret = -EFAULT; 1305a33a7d73SArnd Bergmann if (copy_from_user(&cmd, buffer, sizeof cmd)) 1306a33a7d73SArnd Bergmann goto out; 1307a33a7d73SArnd Bergmann 1308a33a7d73SArnd Bergmann ret = spufs_check_valid_dma(&cmd); 1309a33a7d73SArnd Bergmann if (ret) 1310a33a7d73SArnd Bergmann goto out; 1311a33a7d73SArnd Bergmann 131226bec673SChristoph Hellwig spu_acquire_runnable(ctx, 0); 1313a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1314a33a7d73SArnd Bergmann ret = ctx->ops->send_mfc_command(ctx, &cmd); 1315a33a7d73SArnd Bergmann } else { 1316a33a7d73SArnd Bergmann int status; 1317a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1318a33a7d73SArnd Bergmann spu_send_mfc_command(ctx, cmd, &status)); 1319a33a7d73SArnd Bergmann if (status) 1320a33a7d73SArnd Bergmann ret = status; 1321a33a7d73SArnd Bergmann } 1322a33a7d73SArnd Bergmann spu_release(ctx); 1323a33a7d73SArnd Bergmann 1324a33a7d73SArnd Bergmann if (ret) 1325a33a7d73SArnd Bergmann goto out; 1326a33a7d73SArnd Bergmann 1327a33a7d73SArnd Bergmann ctx->tagwait |= 1 << cmd.tag; 13283692dc66SMasato Noguchi ret = size; 1329a33a7d73SArnd Bergmann 1330a33a7d73SArnd Bergmann out: 1331a33a7d73SArnd Bergmann return ret; 1332a33a7d73SArnd Bergmann } 1333a33a7d73SArnd Bergmann 1334a33a7d73SArnd Bergmann static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) 1335a33a7d73SArnd Bergmann { 1336a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1337a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1338a33a7d73SArnd Bergmann unsigned int mask; 1339a33a7d73SArnd Bergmann 1340a33a7d73SArnd Bergmann spu_acquire(ctx); 1341a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); 1342a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1343a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1344a33a7d73SArnd Bergmann spu_release(ctx); 1345a33a7d73SArnd Bergmann 1346a33a7d73SArnd Bergmann poll_wait(file, &ctx->mfc_wq, wait); 1347a33a7d73SArnd Bergmann 1348a33a7d73SArnd Bergmann mask = 0; 1349a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1350a33a7d73SArnd Bergmann mask |= POLLOUT | POLLWRNORM; 1351a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1352a33a7d73SArnd Bergmann mask |= POLLIN | POLLRDNORM; 1353a33a7d73SArnd Bergmann 1354a33a7d73SArnd Bergmann pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, 1355a33a7d73SArnd Bergmann free_elements, tagstatus, ctx->tagwait); 1356a33a7d73SArnd Bergmann 1357a33a7d73SArnd Bergmann return mask; 1358a33a7d73SArnd Bergmann } 1359a33a7d73SArnd Bergmann 136073b6af8aSAl Viro static int spufs_mfc_flush(struct file *file, fl_owner_t id) 1361a33a7d73SArnd Bergmann { 1362a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1363a33a7d73SArnd Bergmann int ret; 1364a33a7d73SArnd Bergmann 1365a33a7d73SArnd Bergmann spu_acquire(ctx); 1366a33a7d73SArnd Bergmann #if 0 1367a33a7d73SArnd Bergmann /* this currently hangs */ 1368a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1369a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); 1370a33a7d73SArnd Bergmann if (ret) 1371a33a7d73SArnd Bergmann goto out; 1372a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1373a33a7d73SArnd Bergmann ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); 1374a33a7d73SArnd Bergmann out: 1375a33a7d73SArnd Bergmann #else 1376a33a7d73SArnd Bergmann ret = 0; 1377a33a7d73SArnd Bergmann #endif 1378a33a7d73SArnd Bergmann spu_release(ctx); 1379a33a7d73SArnd Bergmann 1380a33a7d73SArnd Bergmann return ret; 1381a33a7d73SArnd Bergmann } 1382a33a7d73SArnd Bergmann 1383a33a7d73SArnd Bergmann static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, 1384a33a7d73SArnd Bergmann int datasync) 1385a33a7d73SArnd Bergmann { 138673b6af8aSAl Viro return spufs_mfc_flush(file, NULL); 1387a33a7d73SArnd Bergmann } 1388a33a7d73SArnd Bergmann 1389a33a7d73SArnd Bergmann static int spufs_mfc_fasync(int fd, struct file *file, int on) 1390a33a7d73SArnd Bergmann { 1391a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1392a33a7d73SArnd Bergmann 1393a33a7d73SArnd Bergmann return fasync_helper(fd, file, on, &ctx->mfc_fasync); 1394a33a7d73SArnd Bergmann } 1395a33a7d73SArnd Bergmann 13965dfe4c96SArjan van de Ven static const struct file_operations spufs_mfc_fops = { 1397a33a7d73SArnd Bergmann .open = spufs_mfc_open, 1398a33a7d73SArnd Bergmann .read = spufs_mfc_read, 1399a33a7d73SArnd Bergmann .write = spufs_mfc_write, 1400a33a7d73SArnd Bergmann .poll = spufs_mfc_poll, 1401a33a7d73SArnd Bergmann .flush = spufs_mfc_flush, 1402a33a7d73SArnd Bergmann .fsync = spufs_mfc_fsync, 1403a33a7d73SArnd Bergmann .fasync = spufs_mfc_fasync, 14046df10a82SMark Nutter .mmap = spufs_mfc_mmap, 1405a33a7d73SArnd Bergmann }; 1406a33a7d73SArnd Bergmann 140767207b96SArnd Bergmann static void spufs_npc_set(void *data, u64 val) 140867207b96SArnd Bergmann { 140967207b96SArnd Bergmann struct spu_context *ctx = data; 14108b3d6663SArnd Bergmann spu_acquire(ctx); 14118b3d6663SArnd Bergmann ctx->ops->npc_write(ctx, val); 14128b3d6663SArnd Bergmann spu_release(ctx); 141367207b96SArnd Bergmann } 141467207b96SArnd Bergmann 141567207b96SArnd Bergmann static u64 spufs_npc_get(void *data) 141667207b96SArnd Bergmann { 141767207b96SArnd Bergmann struct spu_context *ctx = data; 141867207b96SArnd Bergmann u64 ret; 14198b3d6663SArnd Bergmann spu_acquire(ctx); 14208b3d6663SArnd Bergmann ret = ctx->ops->npc_read(ctx); 14218b3d6663SArnd Bergmann spu_release(ctx); 142267207b96SArnd Bergmann return ret; 142367207b96SArnd Bergmann } 14249b5047e2SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, 14259b5047e2SDwayne Grant McConnell "0x%llx\n") 142667207b96SArnd Bergmann 14278b3d6663SArnd Bergmann static void spufs_decr_set(void *data, u64 val) 14288b3d6663SArnd Bergmann { 14298b3d6663SArnd Bergmann struct spu_context *ctx = data; 14308b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 14318b3d6663SArnd Bergmann spu_acquire_saved(ctx); 14328b3d6663SArnd Bergmann lscsa->decr.slot[0] = (u32) val; 14338b3d6663SArnd Bergmann spu_release(ctx); 14348b3d6663SArnd Bergmann } 14358b3d6663SArnd Bergmann 1436bf1ab978SDwayne Grant McConnell static u64 __spufs_decr_get(void *data) 14378b3d6663SArnd Bergmann { 14388b3d6663SArnd Bergmann struct spu_context *ctx = data; 14398b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1440bf1ab978SDwayne Grant McConnell return lscsa->decr.slot[0]; 1441bf1ab978SDwayne Grant McConnell } 1442bf1ab978SDwayne Grant McConnell 1443bf1ab978SDwayne Grant McConnell static u64 spufs_decr_get(void *data) 1444bf1ab978SDwayne Grant McConnell { 1445bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 14468b3d6663SArnd Bergmann u64 ret; 14478b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1448bf1ab978SDwayne Grant McConnell ret = __spufs_decr_get(data); 14498b3d6663SArnd Bergmann spu_release(ctx); 14508b3d6663SArnd Bergmann return ret; 14518b3d6663SArnd Bergmann } 14528b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, 14539b5047e2SDwayne Grant McConnell "0x%llx\n") 14548b3d6663SArnd Bergmann 14558b3d6663SArnd Bergmann static void spufs_decr_status_set(void *data, u64 val) 14568b3d6663SArnd Bergmann { 14578b3d6663SArnd Bergmann struct spu_context *ctx = data; 14588b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 14598b3d6663SArnd Bergmann spu_acquire_saved(ctx); 14608b3d6663SArnd Bergmann lscsa->decr_status.slot[0] = (u32) val; 14618b3d6663SArnd Bergmann spu_release(ctx); 14628b3d6663SArnd Bergmann } 14638b3d6663SArnd Bergmann 1464bf1ab978SDwayne Grant McConnell static u64 __spufs_decr_status_get(void *data) 14658b3d6663SArnd Bergmann { 14668b3d6663SArnd Bergmann struct spu_context *ctx = data; 14678b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1468bf1ab978SDwayne Grant McConnell return lscsa->decr_status.slot[0]; 1469bf1ab978SDwayne Grant McConnell } 1470bf1ab978SDwayne Grant McConnell 1471bf1ab978SDwayne Grant McConnell static u64 spufs_decr_status_get(void *data) 1472bf1ab978SDwayne Grant McConnell { 1473bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 14748b3d6663SArnd Bergmann u64 ret; 14758b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1476bf1ab978SDwayne Grant McConnell ret = __spufs_decr_status_get(data); 14778b3d6663SArnd Bergmann spu_release(ctx); 14788b3d6663SArnd Bergmann return ret; 14798b3d6663SArnd Bergmann } 14808b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, 14819b5047e2SDwayne Grant McConnell spufs_decr_status_set, "0x%llx\n") 14828b3d6663SArnd Bergmann 14838b3d6663SArnd Bergmann static void spufs_event_mask_set(void *data, u64 val) 14848b3d6663SArnd Bergmann { 14858b3d6663SArnd Bergmann struct spu_context *ctx = data; 14868b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 14878b3d6663SArnd Bergmann spu_acquire_saved(ctx); 14888b3d6663SArnd Bergmann lscsa->event_mask.slot[0] = (u32) val; 14898b3d6663SArnd Bergmann spu_release(ctx); 14908b3d6663SArnd Bergmann } 14918b3d6663SArnd Bergmann 1492bf1ab978SDwayne Grant McConnell static u64 __spufs_event_mask_get(void *data) 14938b3d6663SArnd Bergmann { 14948b3d6663SArnd Bergmann struct spu_context *ctx = data; 14958b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1496bf1ab978SDwayne Grant McConnell return lscsa->event_mask.slot[0]; 1497bf1ab978SDwayne Grant McConnell } 1498bf1ab978SDwayne Grant McConnell 1499bf1ab978SDwayne Grant McConnell static u64 spufs_event_mask_get(void *data) 1500bf1ab978SDwayne Grant McConnell { 1501bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 15028b3d6663SArnd Bergmann u64 ret; 15038b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1504bf1ab978SDwayne Grant McConnell ret = __spufs_event_mask_get(data); 15058b3d6663SArnd Bergmann spu_release(ctx); 15068b3d6663SArnd Bergmann return ret; 15078b3d6663SArnd Bergmann } 15088b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, 15099b5047e2SDwayne Grant McConnell spufs_event_mask_set, "0x%llx\n") 15108b3d6663SArnd Bergmann 1511bf1ab978SDwayne Grant McConnell static u64 __spufs_event_status_get(void *data) 1512b9e3bd77SDwayne Grant McConnell { 1513b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = data; 1514b9e3bd77SDwayne Grant McConnell struct spu_state *state = &ctx->csa; 1515b9e3bd77SDwayne Grant McConnell u64 stat; 1516b9e3bd77SDwayne Grant McConnell stat = state->spu_chnlcnt_RW[0]; 1517b9e3bd77SDwayne Grant McConnell if (stat) 1518bf1ab978SDwayne Grant McConnell return state->spu_chnldata_RW[0]; 1519bf1ab978SDwayne Grant McConnell return 0; 1520bf1ab978SDwayne Grant McConnell } 1521bf1ab978SDwayne Grant McConnell 1522bf1ab978SDwayne Grant McConnell static u64 spufs_event_status_get(void *data) 1523bf1ab978SDwayne Grant McConnell { 1524bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 1525bf1ab978SDwayne Grant McConnell u64 ret = 0; 1526bf1ab978SDwayne Grant McConnell 1527bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1528bf1ab978SDwayne Grant McConnell ret = __spufs_event_status_get(data); 1529b9e3bd77SDwayne Grant McConnell spu_release(ctx); 1530b9e3bd77SDwayne Grant McConnell return ret; 1531b9e3bd77SDwayne Grant McConnell } 1532b9e3bd77SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, 1533b9e3bd77SDwayne Grant McConnell NULL, "0x%llx\n") 1534b9e3bd77SDwayne Grant McConnell 15358b3d6663SArnd Bergmann static void spufs_srr0_set(void *data, u64 val) 15368b3d6663SArnd Bergmann { 15378b3d6663SArnd Bergmann struct spu_context *ctx = data; 15388b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 15398b3d6663SArnd Bergmann spu_acquire_saved(ctx); 15408b3d6663SArnd Bergmann lscsa->srr0.slot[0] = (u32) val; 15418b3d6663SArnd Bergmann spu_release(ctx); 15428b3d6663SArnd Bergmann } 15438b3d6663SArnd Bergmann 15448b3d6663SArnd Bergmann static u64 spufs_srr0_get(void *data) 15458b3d6663SArnd Bergmann { 15468b3d6663SArnd Bergmann struct spu_context *ctx = data; 15478b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 15488b3d6663SArnd Bergmann u64 ret; 15498b3d6663SArnd Bergmann spu_acquire_saved(ctx); 15508b3d6663SArnd Bergmann ret = lscsa->srr0.slot[0]; 15518b3d6663SArnd Bergmann spu_release(ctx); 15528b3d6663SArnd Bergmann return ret; 15538b3d6663SArnd Bergmann } 15548b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, 15559b5047e2SDwayne Grant McConnell "0x%llx\n") 15568b3d6663SArnd Bergmann 15577b1a7014Sarnd@arndb.de static u64 spufs_id_get(void *data) 15587b1a7014Sarnd@arndb.de { 15597b1a7014Sarnd@arndb.de struct spu_context *ctx = data; 15607b1a7014Sarnd@arndb.de u64 num; 15617b1a7014Sarnd@arndb.de 15627b1a7014Sarnd@arndb.de spu_acquire(ctx); 15637b1a7014Sarnd@arndb.de if (ctx->state == SPU_STATE_RUNNABLE) 15647b1a7014Sarnd@arndb.de num = ctx->spu->number; 15657b1a7014Sarnd@arndb.de else 15667b1a7014Sarnd@arndb.de num = (unsigned int)-1; 15677b1a7014Sarnd@arndb.de spu_release(ctx); 15687b1a7014Sarnd@arndb.de 15697b1a7014Sarnd@arndb.de return num; 15707b1a7014Sarnd@arndb.de } 1571e45d6634SAl Viro DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n") 15727b1a7014Sarnd@arndb.de 1573bf1ab978SDwayne Grant McConnell static u64 __spufs_object_id_get(void *data) 157486767277SArnd Bergmann { 157586767277SArnd Bergmann struct spu_context *ctx = data; 157686767277SArnd Bergmann return ctx->object_id; 157786767277SArnd Bergmann } 157886767277SArnd Bergmann 1579bf1ab978SDwayne Grant McConnell static u64 spufs_object_id_get(void *data) 1580bf1ab978SDwayne Grant McConnell { 1581bf1ab978SDwayne Grant McConnell /* FIXME: Should there really be no locking here? */ 1582bf1ab978SDwayne Grant McConnell return __spufs_object_id_get(data); 1583bf1ab978SDwayne Grant McConnell } 1584bf1ab978SDwayne Grant McConnell 158586767277SArnd Bergmann static void spufs_object_id_set(void *data, u64 id) 158686767277SArnd Bergmann { 158786767277SArnd Bergmann struct spu_context *ctx = data; 158886767277SArnd Bergmann ctx->object_id = id; 158986767277SArnd Bergmann } 159086767277SArnd Bergmann 159186767277SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, 159286767277SArnd Bergmann spufs_object_id_set, "0x%llx\n"); 159386767277SArnd Bergmann 1594bf1ab978SDwayne Grant McConnell static u64 __spufs_lslr_get(void *data) 1595bf1ab978SDwayne Grant McConnell { 1596bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 1597bf1ab978SDwayne Grant McConnell return ctx->csa.priv2.spu_lslr_RW; 1598bf1ab978SDwayne Grant McConnell } 1599bf1ab978SDwayne Grant McConnell 1600b9e3bd77SDwayne Grant McConnell static u64 spufs_lslr_get(void *data) 1601b9e3bd77SDwayne Grant McConnell { 1602b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = data; 1603b9e3bd77SDwayne Grant McConnell u64 ret; 1604b9e3bd77SDwayne Grant McConnell 1605b9e3bd77SDwayne Grant McConnell spu_acquire_saved(ctx); 1606bf1ab978SDwayne Grant McConnell ret = __spufs_lslr_get(data); 1607b9e3bd77SDwayne Grant McConnell spu_release(ctx); 1608b9e3bd77SDwayne Grant McConnell 1609b9e3bd77SDwayne Grant McConnell return ret; 1610b9e3bd77SDwayne Grant McConnell } 1611b9e3bd77SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n") 1612b9e3bd77SDwayne Grant McConnell 1613b9e3bd77SDwayne Grant McConnell static int spufs_info_open(struct inode *inode, struct file *file) 1614b9e3bd77SDwayne Grant McConnell { 1615b9e3bd77SDwayne Grant McConnell struct spufs_inode_info *i = SPUFS_I(inode); 1616b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = i->i_ctx; 1617b9e3bd77SDwayne Grant McConnell file->private_data = ctx; 1618b9e3bd77SDwayne Grant McConnell return 0; 1619b9e3bd77SDwayne Grant McConnell } 1620b9e3bd77SDwayne Grant McConnell 1621bf1ab978SDwayne Grant McConnell static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, 1622bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1623bf1ab978SDwayne Grant McConnell { 1624bf1ab978SDwayne Grant McConnell u32 mbox_stat; 1625bf1ab978SDwayne Grant McConnell u32 data; 1626bf1ab978SDwayne Grant McConnell 1627bf1ab978SDwayne Grant McConnell mbox_stat = ctx->csa.prob.mb_stat_R; 1628bf1ab978SDwayne Grant McConnell if (mbox_stat & 0x0000ff) { 1629bf1ab978SDwayne Grant McConnell data = ctx->csa.prob.pu_mb_R; 1630bf1ab978SDwayne Grant McConnell } 1631bf1ab978SDwayne Grant McConnell 1632bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1633bf1ab978SDwayne Grant McConnell } 1634bf1ab978SDwayne Grant McConnell 163569a2f00cSDwayne Grant McConnell static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, 163669a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 163769a2f00cSDwayne Grant McConnell { 1638bf1ab978SDwayne Grant McConnell int ret; 163969a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 164069a2f00cSDwayne Grant McConnell 164169a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 164269a2f00cSDwayne Grant McConnell return -EFAULT; 164369a2f00cSDwayne Grant McConnell 164469a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 164569a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1646bf1ab978SDwayne Grant McConnell ret = __spufs_mbox_info_read(ctx, buf, len, pos); 164769a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 164869a2f00cSDwayne Grant McConnell spu_release(ctx); 164969a2f00cSDwayne Grant McConnell 1650bf1ab978SDwayne Grant McConnell return ret; 165169a2f00cSDwayne Grant McConnell } 165269a2f00cSDwayne Grant McConnell 16535dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_info_fops = { 165469a2f00cSDwayne Grant McConnell .open = spufs_info_open, 165569a2f00cSDwayne Grant McConnell .read = spufs_mbox_info_read, 165669a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 165769a2f00cSDwayne Grant McConnell }; 165869a2f00cSDwayne Grant McConnell 1659bf1ab978SDwayne Grant McConnell static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, 1660bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1661bf1ab978SDwayne Grant McConnell { 1662bf1ab978SDwayne Grant McConnell u32 ibox_stat; 1663bf1ab978SDwayne Grant McConnell u32 data; 1664bf1ab978SDwayne Grant McConnell 1665bf1ab978SDwayne Grant McConnell ibox_stat = ctx->csa.prob.mb_stat_R; 1666bf1ab978SDwayne Grant McConnell if (ibox_stat & 0xff0000) { 1667bf1ab978SDwayne Grant McConnell data = ctx->csa.priv2.puint_mb_R; 1668bf1ab978SDwayne Grant McConnell } 1669bf1ab978SDwayne Grant McConnell 1670bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1671bf1ab978SDwayne Grant McConnell } 1672bf1ab978SDwayne Grant McConnell 167369a2f00cSDwayne Grant McConnell static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, 167469a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 167569a2f00cSDwayne Grant McConnell { 167669a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1677bf1ab978SDwayne Grant McConnell int ret; 167869a2f00cSDwayne Grant McConnell 167969a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 168069a2f00cSDwayne Grant McConnell return -EFAULT; 168169a2f00cSDwayne Grant McConnell 168269a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 168369a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1684bf1ab978SDwayne Grant McConnell ret = __spufs_ibox_info_read(ctx, buf, len, pos); 168569a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 168669a2f00cSDwayne Grant McConnell spu_release(ctx); 168769a2f00cSDwayne Grant McConnell 1688bf1ab978SDwayne Grant McConnell return ret; 168969a2f00cSDwayne Grant McConnell } 169069a2f00cSDwayne Grant McConnell 16915dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_info_fops = { 169269a2f00cSDwayne Grant McConnell .open = spufs_info_open, 169369a2f00cSDwayne Grant McConnell .read = spufs_ibox_info_read, 169469a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 169569a2f00cSDwayne Grant McConnell }; 169669a2f00cSDwayne Grant McConnell 1697bf1ab978SDwayne Grant McConnell static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, 1698bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1699bf1ab978SDwayne Grant McConnell { 1700bf1ab978SDwayne Grant McConnell int i, cnt; 1701bf1ab978SDwayne Grant McConnell u32 data[4]; 1702bf1ab978SDwayne Grant McConnell u32 wbox_stat; 1703bf1ab978SDwayne Grant McConnell 1704bf1ab978SDwayne Grant McConnell wbox_stat = ctx->csa.prob.mb_stat_R; 1705bf1ab978SDwayne Grant McConnell cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); 1706bf1ab978SDwayne Grant McConnell for (i = 0; i < cnt; i++) { 1707bf1ab978SDwayne Grant McConnell data[i] = ctx->csa.spu_mailbox_data[i]; 1708bf1ab978SDwayne Grant McConnell } 1709bf1ab978SDwayne Grant McConnell 1710bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, 1711bf1ab978SDwayne Grant McConnell cnt * sizeof(u32)); 1712bf1ab978SDwayne Grant McConnell } 1713bf1ab978SDwayne Grant McConnell 171469a2f00cSDwayne Grant McConnell static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, 171569a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 171669a2f00cSDwayne Grant McConnell { 171769a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1718bf1ab978SDwayne Grant McConnell int ret; 171969a2f00cSDwayne Grant McConnell 172069a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 172169a2f00cSDwayne Grant McConnell return -EFAULT; 172269a2f00cSDwayne Grant McConnell 172369a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 172469a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1725bf1ab978SDwayne Grant McConnell ret = __spufs_wbox_info_read(ctx, buf, len, pos); 172669a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 172769a2f00cSDwayne Grant McConnell spu_release(ctx); 172869a2f00cSDwayne Grant McConnell 1729bf1ab978SDwayne Grant McConnell return ret; 173069a2f00cSDwayne Grant McConnell } 173169a2f00cSDwayne Grant McConnell 17325dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_info_fops = { 173369a2f00cSDwayne Grant McConnell .open = spufs_info_open, 173469a2f00cSDwayne Grant McConnell .read = spufs_wbox_info_read, 173569a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 173669a2f00cSDwayne Grant McConnell }; 173769a2f00cSDwayne Grant McConnell 1738bf1ab978SDwayne Grant McConnell static ssize_t __spufs_dma_info_read(struct spu_context *ctx, 1739bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1740b9e3bd77SDwayne Grant McConnell { 1741b9e3bd77SDwayne Grant McConnell struct spu_dma_info info; 1742b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *spuqp; 1743b9e3bd77SDwayne Grant McConnell int i; 1744b9e3bd77SDwayne Grant McConnell 1745b9e3bd77SDwayne Grant McConnell info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; 1746b9e3bd77SDwayne Grant McConnell info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; 1747b9e3bd77SDwayne Grant McConnell info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; 1748b9e3bd77SDwayne Grant McConnell info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; 1749b9e3bd77SDwayne Grant McConnell info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; 1750b9e3bd77SDwayne Grant McConnell for (i = 0; i < 16; i++) { 1751b9e3bd77SDwayne Grant McConnell qp = &info.dma_info_command_data[i]; 1752b9e3bd77SDwayne Grant McConnell spuqp = &ctx->csa.priv2.spuq[i]; 1753b9e3bd77SDwayne Grant McConnell 1754b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; 1755b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; 1756b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; 1757b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; 1758b9e3bd77SDwayne Grant McConnell } 1759b9e3bd77SDwayne Grant McConnell 1760b9e3bd77SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 1761b9e3bd77SDwayne Grant McConnell sizeof info); 1762b9e3bd77SDwayne Grant McConnell } 1763b9e3bd77SDwayne Grant McConnell 1764bf1ab978SDwayne Grant McConnell static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, 1765bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 1766bf1ab978SDwayne Grant McConnell { 1767bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1768bf1ab978SDwayne Grant McConnell int ret; 1769bf1ab978SDwayne Grant McConnell 1770bf1ab978SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 1771bf1ab978SDwayne Grant McConnell return -EFAULT; 1772bf1ab978SDwayne Grant McConnell 1773bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1774bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1775bf1ab978SDwayne Grant McConnell ret = __spufs_dma_info_read(ctx, buf, len, pos); 1776bf1ab978SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 1777bf1ab978SDwayne Grant McConnell spu_release(ctx); 1778bf1ab978SDwayne Grant McConnell 1779bf1ab978SDwayne Grant McConnell return ret; 1780bf1ab978SDwayne Grant McConnell } 1781bf1ab978SDwayne Grant McConnell 17825dfe4c96SArjan van de Ven static const struct file_operations spufs_dma_info_fops = { 1783b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 1784b9e3bd77SDwayne Grant McConnell .read = spufs_dma_info_read, 1785b9e3bd77SDwayne Grant McConnell }; 1786b9e3bd77SDwayne Grant McConnell 1787bf1ab978SDwayne Grant McConnell static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, 1788bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1789b9e3bd77SDwayne Grant McConnell { 1790b9e3bd77SDwayne Grant McConnell struct spu_proxydma_info info; 1791b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *puqp; 1792bf1ab978SDwayne Grant McConnell int ret = sizeof info; 1793b9e3bd77SDwayne Grant McConnell int i; 1794b9e3bd77SDwayne Grant McConnell 1795b9e3bd77SDwayne Grant McConnell if (len < ret) 1796b9e3bd77SDwayne Grant McConnell return -EINVAL; 1797b9e3bd77SDwayne Grant McConnell 1798b9e3bd77SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 1799b9e3bd77SDwayne Grant McConnell return -EFAULT; 1800b9e3bd77SDwayne Grant McConnell 1801b9e3bd77SDwayne Grant McConnell info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; 1802b9e3bd77SDwayne Grant McConnell info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; 1803b9e3bd77SDwayne Grant McConnell info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; 1804b9e3bd77SDwayne Grant McConnell for (i = 0; i < 8; i++) { 1805b9e3bd77SDwayne Grant McConnell qp = &info.proxydma_info_command_data[i]; 1806b9e3bd77SDwayne Grant McConnell puqp = &ctx->csa.priv2.puq[i]; 1807b9e3bd77SDwayne Grant McConnell 1808b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; 1809b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; 1810b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; 1811b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; 1812b9e3bd77SDwayne Grant McConnell } 1813bf1ab978SDwayne Grant McConnell 1814bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 1815bf1ab978SDwayne Grant McConnell sizeof info); 1816bf1ab978SDwayne Grant McConnell } 1817bf1ab978SDwayne Grant McConnell 1818bf1ab978SDwayne Grant McConnell static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, 1819bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 1820bf1ab978SDwayne Grant McConnell { 1821bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1822bf1ab978SDwayne Grant McConnell int ret; 1823bf1ab978SDwayne Grant McConnell 1824bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1825bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1826bf1ab978SDwayne Grant McConnell ret = __spufs_proxydma_info_read(ctx, buf, len, pos); 1827b9e3bd77SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 1828b9e3bd77SDwayne Grant McConnell spu_release(ctx); 1829b9e3bd77SDwayne Grant McConnell 1830b9e3bd77SDwayne Grant McConnell return ret; 1831b9e3bd77SDwayne Grant McConnell } 1832b9e3bd77SDwayne Grant McConnell 18335dfe4c96SArjan van de Ven static const struct file_operations spufs_proxydma_info_fops = { 1834b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 1835b9e3bd77SDwayne Grant McConnell .read = spufs_proxydma_info_read, 1836b9e3bd77SDwayne Grant McConnell }; 1837b9e3bd77SDwayne Grant McConnell 183867207b96SArnd Bergmann struct tree_descr spufs_dir_contents[] = { 183967207b96SArnd Bergmann { "mem", &spufs_mem_fops, 0666, }, 18408b3d6663SArnd Bergmann { "regs", &spufs_regs_fops, 0666, }, 184167207b96SArnd Bergmann { "mbox", &spufs_mbox_fops, 0444, }, 184267207b96SArnd Bergmann { "ibox", &spufs_ibox_fops, 0444, }, 184367207b96SArnd Bergmann { "wbox", &spufs_wbox_fops, 0222, }, 184467207b96SArnd Bergmann { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 184567207b96SArnd Bergmann { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 184667207b96SArnd Bergmann { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 184767207b96SArnd Bergmann { "signal1", &spufs_signal1_fops, 0666, }, 184867207b96SArnd Bergmann { "signal2", &spufs_signal2_fops, 0666, }, 184967207b96SArnd Bergmann { "signal1_type", &spufs_signal1_type, 0666, }, 185067207b96SArnd Bergmann { "signal2_type", &spufs_signal2_type, 0666, }, 18516df10a82SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 18528b3d6663SArnd Bergmann { "fpcr", &spufs_fpcr_fops, 0666, }, 1853b9e3bd77SDwayne Grant McConnell { "lslr", &spufs_lslr_ops, 0444, }, 1854b9e3bd77SDwayne Grant McConnell { "mfc", &spufs_mfc_fops, 0666, }, 1855b9e3bd77SDwayne Grant McConnell { "mss", &spufs_mss_fops, 0666, }, 1856b9e3bd77SDwayne Grant McConnell { "npc", &spufs_npc_ops, 0666, }, 1857b9e3bd77SDwayne Grant McConnell { "srr0", &spufs_srr0_ops, 0666, }, 18588b3d6663SArnd Bergmann { "decr", &spufs_decr_ops, 0666, }, 18598b3d6663SArnd Bergmann { "decr_status", &spufs_decr_status_ops, 0666, }, 18608b3d6663SArnd Bergmann { "event_mask", &spufs_event_mask_ops, 0666, }, 1861b9e3bd77SDwayne Grant McConnell { "event_status", &spufs_event_status_ops, 0444, }, 186227d5bf2aSBenjamin Herrenschmidt { "psmap", &spufs_psmap_fops, 0666, }, 186386767277SArnd Bergmann { "phys-id", &spufs_id_ops, 0666, }, 186486767277SArnd Bergmann { "object-id", &spufs_object_id_ops, 0666, }, 186569a2f00cSDwayne Grant McConnell { "mbox_info", &spufs_mbox_info_fops, 0444, }, 186669a2f00cSDwayne Grant McConnell { "ibox_info", &spufs_ibox_info_fops, 0444, }, 186769a2f00cSDwayne Grant McConnell { "wbox_info", &spufs_wbox_info_fops, 0444, }, 1868b9e3bd77SDwayne Grant McConnell { "dma_info", &spufs_dma_info_fops, 0444, }, 1869b9e3bd77SDwayne Grant McConnell { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, 187067207b96SArnd Bergmann {}, 187167207b96SArnd Bergmann }; 18725737edd1SMark Nutter 18735737edd1SMark Nutter struct tree_descr spufs_dir_nosched_contents[] = { 18745737edd1SMark Nutter { "mem", &spufs_mem_fops, 0666, }, 18755737edd1SMark Nutter { "mbox", &spufs_mbox_fops, 0444, }, 18765737edd1SMark Nutter { "ibox", &spufs_ibox_fops, 0444, }, 18775737edd1SMark Nutter { "wbox", &spufs_wbox_fops, 0222, }, 18785737edd1SMark Nutter { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 18795737edd1SMark Nutter { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 18805737edd1SMark Nutter { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 18815737edd1SMark Nutter { "signal1", &spufs_signal1_fops, 0666, }, 18825737edd1SMark Nutter { "signal2", &spufs_signal2_fops, 0666, }, 18835737edd1SMark Nutter { "signal1_type", &spufs_signal1_type, 0666, }, 18845737edd1SMark Nutter { "signal2_type", &spufs_signal2_type, 0666, }, 18855737edd1SMark Nutter { "mss", &spufs_mss_fops, 0666, }, 18865737edd1SMark Nutter { "mfc", &spufs_mfc_fops, 0666, }, 18875737edd1SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 18885737edd1SMark Nutter { "npc", &spufs_npc_ops, 0666, }, 18895737edd1SMark Nutter { "psmap", &spufs_psmap_fops, 0666, }, 18905737edd1SMark Nutter { "phys-id", &spufs_id_ops, 0666, }, 18915737edd1SMark Nutter { "object-id", &spufs_object_id_ops, 0666, }, 18925737edd1SMark Nutter {}, 18935737edd1SMark Nutter }; 1894bf1ab978SDwayne Grant McConnell 1895bf1ab978SDwayne Grant McConnell struct spufs_coredump_reader spufs_coredump_read[] = { 1896bf1ab978SDwayne Grant McConnell { "regs", __spufs_regs_read, NULL, 128 * 16 }, 1897bf1ab978SDwayne Grant McConnell { "fpcr", __spufs_fpcr_read, NULL, 16 }, 1898bf1ab978SDwayne Grant McConnell { "lslr", NULL, __spufs_lslr_get, 11 }, 1899bf1ab978SDwayne Grant McConnell { "decr", NULL, __spufs_decr_get, 11 }, 1900bf1ab978SDwayne Grant McConnell { "decr_status", NULL, __spufs_decr_status_get, 11 }, 1901bf1ab978SDwayne Grant McConnell { "mem", __spufs_mem_read, NULL, 256 * 1024, }, 1902bf1ab978SDwayne Grant McConnell { "signal1", __spufs_signal1_read, NULL, 4 }, 1903bf1ab978SDwayne Grant McConnell { "signal1_type", NULL, __spufs_signal1_type_get, 2 }, 1904bf1ab978SDwayne Grant McConnell { "signal2", __spufs_signal2_read, NULL, 4 }, 1905bf1ab978SDwayne Grant McConnell { "signal2_type", NULL, __spufs_signal2_type_get, 2 }, 1906bf1ab978SDwayne Grant McConnell { "event_mask", NULL, __spufs_event_mask_get, 8 }, 1907bf1ab978SDwayne Grant McConnell { "event_status", NULL, __spufs_event_status_get, 8 }, 1908bf1ab978SDwayne Grant McConnell { "mbox_info", __spufs_mbox_info_read, NULL, 4 }, 1909bf1ab978SDwayne Grant McConnell { "ibox_info", __spufs_ibox_info_read, NULL, 4 }, 1910bf1ab978SDwayne Grant McConnell { "wbox_info", __spufs_wbox_info_read, NULL, 16 }, 1911bf1ab978SDwayne Grant McConnell { "dma_info", __spufs_dma_info_read, NULL, 69 * 8 }, 1912bf1ab978SDwayne Grant McConnell { "proxydma_info", __spufs_proxydma_info_read, NULL, 35 * 8 }, 1913bf1ab978SDwayne Grant McConnell { "object-id", NULL, __spufs_object_id_get, 19 }, 1914bf1ab978SDwayne Grant McConnell { }, 1915bf1ab978SDwayne Grant McConnell }; 1916bf1ab978SDwayne Grant McConnell int spufs_coredump_num_notes = ARRAY_SIZE(spufs_coredump_read) - 1; 1917bf1ab978SDwayne Grant McConnell 1918