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 1068b3d6663SArnd Bergmann spu_acquire(ctx); 1078b3d6663SArnd Bergmann 108ac91cb8dSArnd Bergmann if (ctx->state == SPU_STATE_SAVED) { 109ac91cb8dSArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 110932f535dSArnd Bergmann & ~_PAGE_NO_CACHE); 11178bde53eSBenjamin Herrenschmidt pfn = vmalloc_to_pfn(ctx->csa.lscsa->ls + offset); 112ac91cb8dSArnd Bergmann } else { 113ac91cb8dSArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 114932f535dSArnd Bergmann | _PAGE_NO_CACHE); 11578bde53eSBenjamin Herrenschmidt pfn = (ctx->spu->local_store_phys + offset) >> PAGE_SHIFT; 116ac91cb8dSArnd Bergmann } 11778bde53eSBenjamin Herrenschmidt vm_insert_pfn(vma, address, pfn); 11878bde53eSBenjamin Herrenschmidt 1198b3d6663SArnd Bergmann spu_release(ctx); 1208b3d6663SArnd Bergmann 12178bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 1228b3d6663SArnd Bergmann } 1238b3d6663SArnd Bergmann 12478bde53eSBenjamin Herrenschmidt 1258b3d6663SArnd Bergmann static struct vm_operations_struct spufs_mem_mmap_vmops = { 12678bde53eSBenjamin Herrenschmidt .nopfn = spufs_mem_mmap_nopfn, 1278b3d6663SArnd Bergmann }; 1288b3d6663SArnd Bergmann 12967207b96SArnd Bergmann static int 13067207b96SArnd Bergmann spufs_mem_mmap(struct file *file, struct vm_area_struct *vma) 13167207b96SArnd Bergmann { 1328b3d6663SArnd Bergmann if (!(vma->vm_flags & VM_SHARED)) 1338b3d6663SArnd Bergmann return -EINVAL; 13467207b96SArnd Bergmann 13578bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 13667207b96SArnd Bergmann vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 13767207b96SArnd Bergmann | _PAGE_NO_CACHE); 1388b3d6663SArnd Bergmann 1398b3d6663SArnd Bergmann vma->vm_ops = &spufs_mem_mmap_vmops; 14067207b96SArnd Bergmann return 0; 14167207b96SArnd Bergmann } 14267207b96SArnd Bergmann 1435dfe4c96SArjan van de Ven static const struct file_operations spufs_mem_fops = { 14467207b96SArnd Bergmann .open = spufs_mem_open, 14567207b96SArnd Bergmann .read = spufs_mem_read, 14667207b96SArnd Bergmann .write = spufs_mem_write, 1478b3d6663SArnd Bergmann .llseek = generic_file_llseek, 14867207b96SArnd Bergmann .mmap = spufs_mem_mmap, 1498b3d6663SArnd Bergmann }; 1508b3d6663SArnd Bergmann 15178bde53eSBenjamin Herrenschmidt static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma, 1526df10a82SMark Nutter unsigned long address, 15378bde53eSBenjamin Herrenschmidt unsigned long ps_offs, 15427d5bf2aSBenjamin Herrenschmidt unsigned long ps_size) 1556df10a82SMark Nutter { 1566df10a82SMark Nutter struct spu_context *ctx = vma->vm_file->private_data; 15778bde53eSBenjamin Herrenschmidt unsigned long area, offset = address - vma->vm_start; 1586df10a82SMark Nutter int ret; 1596df10a82SMark Nutter 1606df10a82SMark Nutter offset += vma->vm_pgoff << PAGE_SHIFT; 16127d5bf2aSBenjamin Herrenschmidt if (offset >= ps_size) 16278bde53eSBenjamin Herrenschmidt return NOPFN_SIGBUS; 1636df10a82SMark Nutter 16478bde53eSBenjamin Herrenschmidt /* error here usually means a signal.. we might want to test 16578bde53eSBenjamin Herrenschmidt * the error code more precisely though 16678bde53eSBenjamin Herrenschmidt */ 1676df10a82SMark Nutter ret = spu_acquire_runnable(ctx); 1686df10a82SMark Nutter if (ret) 16978bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 1706df10a82SMark Nutter 1716df10a82SMark Nutter area = ctx->spu->problem_phys + ps_offs; 17278bde53eSBenjamin Herrenschmidt vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT); 1736df10a82SMark Nutter spu_release(ctx); 1746df10a82SMark Nutter 17578bde53eSBenjamin Herrenschmidt return NOPFN_REFAULT; 1766df10a82SMark Nutter } 1776df10a82SMark Nutter 17827d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 17978bde53eSBenjamin Herrenschmidt static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma, 18078bde53eSBenjamin Herrenschmidt unsigned long address) 1816df10a82SMark Nutter { 18278bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x4000, 0x1000); 1836df10a82SMark Nutter } 1846df10a82SMark Nutter 1856df10a82SMark Nutter static struct vm_operations_struct spufs_cntl_mmap_vmops = { 18678bde53eSBenjamin Herrenschmidt .nopfn = spufs_cntl_mmap_nopfn, 1876df10a82SMark Nutter }; 1886df10a82SMark Nutter 1896df10a82SMark Nutter /* 1906df10a82SMark Nutter * mmap support for problem state control area [0x4000 - 0x4fff]. 1916df10a82SMark Nutter */ 1926df10a82SMark Nutter static int spufs_cntl_mmap(struct file *file, struct vm_area_struct *vma) 1936df10a82SMark Nutter { 1946df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 1956df10a82SMark Nutter return -EINVAL; 1966df10a82SMark Nutter 19778bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 1986df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 19923cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 2006df10a82SMark Nutter 2016df10a82SMark Nutter vma->vm_ops = &spufs_cntl_mmap_vmops; 2026df10a82SMark Nutter return 0; 2036df10a82SMark Nutter } 20427d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 20527d5bf2aSBenjamin Herrenschmidt #define spufs_cntl_mmap NULL 20627d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 2076df10a82SMark Nutter 208e1dbff2bSArnd Bergmann static u64 spufs_cntl_get(void *data) 209e1dbff2bSArnd Bergmann { 210e1dbff2bSArnd Bergmann struct spu_context *ctx = data; 211e1dbff2bSArnd Bergmann u64 val; 212e1dbff2bSArnd Bergmann 213e1dbff2bSArnd Bergmann spu_acquire(ctx); 214e1dbff2bSArnd Bergmann val = ctx->ops->status_read(ctx); 215e1dbff2bSArnd Bergmann spu_release(ctx); 216e1dbff2bSArnd Bergmann 217e1dbff2bSArnd Bergmann return val; 218e1dbff2bSArnd Bergmann } 219e1dbff2bSArnd Bergmann 220e1dbff2bSArnd Bergmann static void spufs_cntl_set(void *data, u64 val) 221e1dbff2bSArnd Bergmann { 222e1dbff2bSArnd Bergmann struct spu_context *ctx = data; 223e1dbff2bSArnd Bergmann 224e1dbff2bSArnd Bergmann spu_acquire(ctx); 225e1dbff2bSArnd Bergmann ctx->ops->runcntl_write(ctx, val); 226e1dbff2bSArnd Bergmann spu_release(ctx); 227e1dbff2bSArnd Bergmann } 228e1dbff2bSArnd Bergmann 2296df10a82SMark Nutter static int spufs_cntl_open(struct inode *inode, struct file *file) 2306df10a82SMark Nutter { 2316df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 2326df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 2336df10a82SMark Nutter 2346df10a82SMark Nutter file->private_data = ctx; 2356df10a82SMark Nutter ctx->cntl = inode->i_mapping; 23617e0e270SBenjamin Herrenschmidt smp_wmb(); 237e1dbff2bSArnd Bergmann return simple_attr_open(inode, file, spufs_cntl_get, 238e1dbff2bSArnd Bergmann spufs_cntl_set, "0x%08lx"); 2396df10a82SMark Nutter } 2406df10a82SMark Nutter 2415dfe4c96SArjan van de Ven static const struct file_operations spufs_cntl_fops = { 2426df10a82SMark Nutter .open = spufs_cntl_open, 243654e4aeeSNoguchi, Masato .release = simple_attr_close, 244e1dbff2bSArnd Bergmann .read = simple_attr_read, 245e1dbff2bSArnd Bergmann .write = simple_attr_write, 2466df10a82SMark Nutter .mmap = spufs_cntl_mmap, 2476df10a82SMark Nutter }; 2486df10a82SMark Nutter 2498b3d6663SArnd Bergmann static int 2508b3d6663SArnd Bergmann spufs_regs_open(struct inode *inode, struct file *file) 2518b3d6663SArnd Bergmann { 2528b3d6663SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 2538b3d6663SArnd Bergmann file->private_data = i->i_ctx; 2548b3d6663SArnd Bergmann return 0; 2558b3d6663SArnd Bergmann } 2568b3d6663SArnd Bergmann 2578b3d6663SArnd Bergmann static ssize_t 258bf1ab978SDwayne Grant McConnell __spufs_regs_read(struct spu_context *ctx, char __user *buffer, 259bf1ab978SDwayne Grant McConnell size_t size, loff_t *pos) 260bf1ab978SDwayne Grant McConnell { 261bf1ab978SDwayne Grant McConnell struct spu_lscsa *lscsa = ctx->csa.lscsa; 262bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, 263bf1ab978SDwayne Grant McConnell lscsa->gprs, sizeof lscsa->gprs); 264bf1ab978SDwayne Grant McConnell } 265bf1ab978SDwayne Grant McConnell 266bf1ab978SDwayne Grant McConnell static ssize_t 2678b3d6663SArnd Bergmann spufs_regs_read(struct file *file, char __user *buffer, 2688b3d6663SArnd Bergmann size_t size, loff_t *pos) 2698b3d6663SArnd Bergmann { 2708b3d6663SArnd Bergmann int ret; 271bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 2728b3d6663SArnd Bergmann 2738b3d6663SArnd Bergmann spu_acquire_saved(ctx); 274bf1ab978SDwayne Grant McConnell ret = __spufs_regs_read(ctx, buffer, size, pos); 2758b3d6663SArnd Bergmann spu_release(ctx); 2768b3d6663SArnd Bergmann return ret; 2778b3d6663SArnd Bergmann } 2788b3d6663SArnd Bergmann 2798b3d6663SArnd Bergmann static ssize_t 2808b3d6663SArnd Bergmann spufs_regs_write(struct file *file, const char __user *buffer, 2818b3d6663SArnd Bergmann size_t size, loff_t *pos) 2828b3d6663SArnd Bergmann { 2838b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 2848b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 2858b3d6663SArnd Bergmann int ret; 2868b3d6663SArnd Bergmann 2878b3d6663SArnd Bergmann size = min_t(ssize_t, sizeof lscsa->gprs - *pos, size); 2888b3d6663SArnd Bergmann if (size <= 0) 2898b3d6663SArnd Bergmann return -EFBIG; 2908b3d6663SArnd Bergmann *pos += size; 2918b3d6663SArnd Bergmann 2928b3d6663SArnd Bergmann spu_acquire_saved(ctx); 2938b3d6663SArnd Bergmann 2948b3d6663SArnd Bergmann ret = copy_from_user(lscsa->gprs + *pos - size, 2958b3d6663SArnd Bergmann buffer, size) ? -EFAULT : size; 2968b3d6663SArnd Bergmann 2978b3d6663SArnd Bergmann spu_release(ctx); 2988b3d6663SArnd Bergmann return ret; 2998b3d6663SArnd Bergmann } 3008b3d6663SArnd Bergmann 3015dfe4c96SArjan van de Ven static const struct file_operations spufs_regs_fops = { 3028b3d6663SArnd Bergmann .open = spufs_regs_open, 3038b3d6663SArnd Bergmann .read = spufs_regs_read, 3048b3d6663SArnd Bergmann .write = spufs_regs_write, 3058b3d6663SArnd Bergmann .llseek = generic_file_llseek, 3068b3d6663SArnd Bergmann }; 3078b3d6663SArnd Bergmann 3088b3d6663SArnd Bergmann static ssize_t 309bf1ab978SDwayne Grant McConnell __spufs_fpcr_read(struct spu_context *ctx, char __user * buffer, 310bf1ab978SDwayne Grant McConnell size_t size, loff_t * pos) 311bf1ab978SDwayne Grant McConnell { 312bf1ab978SDwayne Grant McConnell struct spu_lscsa *lscsa = ctx->csa.lscsa; 313bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buffer, size, pos, 314bf1ab978SDwayne Grant McConnell &lscsa->fpcr, sizeof(lscsa->fpcr)); 315bf1ab978SDwayne Grant McConnell } 316bf1ab978SDwayne Grant McConnell 317bf1ab978SDwayne Grant McConnell static ssize_t 3188b3d6663SArnd Bergmann spufs_fpcr_read(struct file *file, char __user * buffer, 3198b3d6663SArnd Bergmann size_t size, loff_t * pos) 3208b3d6663SArnd Bergmann { 3218b3d6663SArnd Bergmann int ret; 322bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 3238b3d6663SArnd Bergmann 3248b3d6663SArnd Bergmann spu_acquire_saved(ctx); 325bf1ab978SDwayne Grant McConnell ret = __spufs_fpcr_read(ctx, buffer, size, pos); 3268b3d6663SArnd Bergmann spu_release(ctx); 3278b3d6663SArnd Bergmann return ret; 3288b3d6663SArnd Bergmann } 3298b3d6663SArnd Bergmann 3308b3d6663SArnd Bergmann static ssize_t 3318b3d6663SArnd Bergmann spufs_fpcr_write(struct file *file, const char __user * buffer, 3328b3d6663SArnd Bergmann size_t size, loff_t * pos) 3338b3d6663SArnd Bergmann { 3348b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 3358b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 3368b3d6663SArnd Bergmann int ret; 3378b3d6663SArnd Bergmann 3388b3d6663SArnd Bergmann size = min_t(ssize_t, sizeof(lscsa->fpcr) - *pos, size); 3398b3d6663SArnd Bergmann if (size <= 0) 3408b3d6663SArnd Bergmann return -EFBIG; 3418b3d6663SArnd Bergmann *pos += size; 3428b3d6663SArnd Bergmann 3438b3d6663SArnd Bergmann spu_acquire_saved(ctx); 3448b3d6663SArnd Bergmann 3458b3d6663SArnd Bergmann ret = copy_from_user((char *)&lscsa->fpcr + *pos - size, 3468b3d6663SArnd Bergmann buffer, size) ? -EFAULT : size; 3478b3d6663SArnd Bergmann 3488b3d6663SArnd Bergmann spu_release(ctx); 3498b3d6663SArnd Bergmann return ret; 3508b3d6663SArnd Bergmann } 3518b3d6663SArnd Bergmann 3525dfe4c96SArjan van de Ven static const struct file_operations spufs_fpcr_fops = { 3538b3d6663SArnd Bergmann .open = spufs_regs_open, 3548b3d6663SArnd Bergmann .read = spufs_fpcr_read, 3558b3d6663SArnd Bergmann .write = spufs_fpcr_write, 35667207b96SArnd Bergmann .llseek = generic_file_llseek, 35767207b96SArnd Bergmann }; 35867207b96SArnd Bergmann 35967207b96SArnd Bergmann /* generic open function for all pipe-like files */ 36067207b96SArnd Bergmann static int spufs_pipe_open(struct inode *inode, struct file *file) 36167207b96SArnd Bergmann { 36267207b96SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 36367207b96SArnd Bergmann file->private_data = i->i_ctx; 36467207b96SArnd Bergmann 36567207b96SArnd Bergmann return nonseekable_open(inode, file); 36667207b96SArnd Bergmann } 36767207b96SArnd Bergmann 368cdcc89bbSArnd Bergmann /* 369cdcc89bbSArnd Bergmann * Read as many bytes from the mailbox as possible, until 370cdcc89bbSArnd Bergmann * one of the conditions becomes true: 371cdcc89bbSArnd Bergmann * 372cdcc89bbSArnd Bergmann * - no more data available in the mailbox 373cdcc89bbSArnd Bergmann * - end of the user provided buffer 374cdcc89bbSArnd Bergmann * - end of the mapped area 375cdcc89bbSArnd Bergmann */ 37667207b96SArnd Bergmann static ssize_t spufs_mbox_read(struct file *file, char __user *buf, 37767207b96SArnd Bergmann size_t len, loff_t *pos) 37867207b96SArnd Bergmann { 3798b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 380cdcc89bbSArnd Bergmann u32 mbox_data, __user *udata; 381cdcc89bbSArnd Bergmann ssize_t count; 38267207b96SArnd Bergmann 38367207b96SArnd Bergmann if (len < 4) 38467207b96SArnd Bergmann return -EINVAL; 38567207b96SArnd Bergmann 386cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_WRITE, buf, len)) 38767207b96SArnd Bergmann return -EFAULT; 38867207b96SArnd Bergmann 389cdcc89bbSArnd Bergmann udata = (void __user *)buf; 390cdcc89bbSArnd Bergmann 391cdcc89bbSArnd Bergmann spu_acquire(ctx); 392274cef5eSArnd Bergmann for (count = 0; (count + 4) <= len; count += 4, udata++) { 393cdcc89bbSArnd Bergmann int ret; 394cdcc89bbSArnd Bergmann ret = ctx->ops->mbox_read(ctx, &mbox_data); 395cdcc89bbSArnd Bergmann if (ret == 0) 396cdcc89bbSArnd Bergmann break; 397cdcc89bbSArnd Bergmann 398cdcc89bbSArnd Bergmann /* 399cdcc89bbSArnd Bergmann * at the end of the mapped area, we can fault 400cdcc89bbSArnd Bergmann * but still need to return the data we have 401cdcc89bbSArnd Bergmann * read successfully so far. 402cdcc89bbSArnd Bergmann */ 403cdcc89bbSArnd Bergmann ret = __put_user(mbox_data, udata); 404cdcc89bbSArnd Bergmann if (ret) { 405cdcc89bbSArnd Bergmann if (!count) 406cdcc89bbSArnd Bergmann count = -EFAULT; 407cdcc89bbSArnd Bergmann break; 408cdcc89bbSArnd Bergmann } 409cdcc89bbSArnd Bergmann } 410cdcc89bbSArnd Bergmann spu_release(ctx); 411cdcc89bbSArnd Bergmann 412cdcc89bbSArnd Bergmann if (!count) 413cdcc89bbSArnd Bergmann count = -EAGAIN; 414cdcc89bbSArnd Bergmann 415cdcc89bbSArnd Bergmann return count; 41667207b96SArnd Bergmann } 41767207b96SArnd Bergmann 4185dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_fops = { 41967207b96SArnd Bergmann .open = spufs_pipe_open, 42067207b96SArnd Bergmann .read = spufs_mbox_read, 42167207b96SArnd Bergmann }; 42267207b96SArnd Bergmann 42367207b96SArnd Bergmann static ssize_t spufs_mbox_stat_read(struct file *file, char __user *buf, 42467207b96SArnd Bergmann size_t len, loff_t *pos) 42567207b96SArnd Bergmann { 4268b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 42767207b96SArnd Bergmann u32 mbox_stat; 42867207b96SArnd Bergmann 42967207b96SArnd Bergmann if (len < 4) 43067207b96SArnd Bergmann return -EINVAL; 43167207b96SArnd Bergmann 4328b3d6663SArnd Bergmann spu_acquire(ctx); 4338b3d6663SArnd Bergmann 4348b3d6663SArnd Bergmann mbox_stat = ctx->ops->mbox_stat_read(ctx) & 0xff; 4358b3d6663SArnd Bergmann 4368b3d6663SArnd Bergmann spu_release(ctx); 43767207b96SArnd Bergmann 43867207b96SArnd Bergmann if (copy_to_user(buf, &mbox_stat, sizeof mbox_stat)) 43967207b96SArnd Bergmann return -EFAULT; 44067207b96SArnd Bergmann 44167207b96SArnd Bergmann return 4; 44267207b96SArnd Bergmann } 44367207b96SArnd Bergmann 4445dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_stat_fops = { 44567207b96SArnd Bergmann .open = spufs_pipe_open, 44667207b96SArnd Bergmann .read = spufs_mbox_stat_read, 44767207b96SArnd Bergmann }; 44867207b96SArnd Bergmann 44967207b96SArnd Bergmann /* low-level ibox access function */ 4508b3d6663SArnd Bergmann size_t spu_ibox_read(struct spu_context *ctx, u32 *data) 45167207b96SArnd Bergmann { 4528b3d6663SArnd Bergmann return ctx->ops->ibox_read(ctx, data); 45367207b96SArnd Bergmann } 45467207b96SArnd Bergmann 45567207b96SArnd Bergmann static int spufs_ibox_fasync(int fd, struct file *file, int on) 45667207b96SArnd Bergmann { 4578b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 4588b3d6663SArnd Bergmann 4598b3d6663SArnd Bergmann return fasync_helper(fd, file, on, &ctx->ibox_fasync); 4608b3d6663SArnd Bergmann } 4618b3d6663SArnd Bergmann 4628b3d6663SArnd Bergmann /* interrupt-level ibox callback function. */ 4638b3d6663SArnd Bergmann void spufs_ibox_callback(struct spu *spu) 4648b3d6663SArnd Bergmann { 4658b3d6663SArnd Bergmann struct spu_context *ctx = spu->ctx; 4668b3d6663SArnd Bergmann 4678b3d6663SArnd Bergmann wake_up_all(&ctx->ibox_wq); 4688b3d6663SArnd Bergmann kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN); 46967207b96SArnd Bergmann } 47067207b96SArnd Bergmann 471cdcc89bbSArnd Bergmann /* 472cdcc89bbSArnd Bergmann * Read as many bytes from the interrupt mailbox as possible, until 473cdcc89bbSArnd Bergmann * one of the conditions becomes true: 474cdcc89bbSArnd Bergmann * 475cdcc89bbSArnd Bergmann * - no more data available in the mailbox 476cdcc89bbSArnd Bergmann * - end of the user provided buffer 477cdcc89bbSArnd Bergmann * - end of the mapped area 478cdcc89bbSArnd Bergmann * 479cdcc89bbSArnd Bergmann * If the file is opened without O_NONBLOCK, we wait here until 480cdcc89bbSArnd Bergmann * any data is available, but return when we have been able to 481cdcc89bbSArnd Bergmann * read something. 482cdcc89bbSArnd Bergmann */ 48367207b96SArnd Bergmann static ssize_t spufs_ibox_read(struct file *file, char __user *buf, 48467207b96SArnd Bergmann size_t len, loff_t *pos) 48567207b96SArnd Bergmann { 4868b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 487cdcc89bbSArnd Bergmann u32 ibox_data, __user *udata; 488cdcc89bbSArnd Bergmann ssize_t count; 48967207b96SArnd Bergmann 49067207b96SArnd Bergmann if (len < 4) 49167207b96SArnd Bergmann return -EINVAL; 49267207b96SArnd Bergmann 493cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_WRITE, buf, len)) 494cdcc89bbSArnd Bergmann return -EFAULT; 495cdcc89bbSArnd Bergmann 496cdcc89bbSArnd Bergmann udata = (void __user *)buf; 497cdcc89bbSArnd Bergmann 4988b3d6663SArnd Bergmann spu_acquire(ctx); 49967207b96SArnd Bergmann 500cdcc89bbSArnd Bergmann /* wait only for the first element */ 501cdcc89bbSArnd Bergmann count = 0; 50267207b96SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 5038b3d6663SArnd Bergmann if (!spu_ibox_read(ctx, &ibox_data)) 504cdcc89bbSArnd Bergmann count = -EAGAIN; 50567207b96SArnd Bergmann } else { 506cdcc89bbSArnd Bergmann count = spufs_wait(ctx->ibox_wq, spu_ibox_read(ctx, &ibox_data)); 507cdcc89bbSArnd Bergmann } 508cdcc89bbSArnd Bergmann if (count) 509cdcc89bbSArnd Bergmann goto out; 510cdcc89bbSArnd Bergmann 511cdcc89bbSArnd Bergmann /* if we can't write at all, return -EFAULT */ 512cdcc89bbSArnd Bergmann count = __put_user(ibox_data, udata); 513cdcc89bbSArnd Bergmann if (count) 514cdcc89bbSArnd Bergmann goto out; 515cdcc89bbSArnd Bergmann 516cdcc89bbSArnd Bergmann for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { 517cdcc89bbSArnd Bergmann int ret; 518cdcc89bbSArnd Bergmann ret = ctx->ops->ibox_read(ctx, &ibox_data); 519cdcc89bbSArnd Bergmann if (ret == 0) 520cdcc89bbSArnd Bergmann break; 521cdcc89bbSArnd Bergmann /* 522cdcc89bbSArnd Bergmann * at the end of the mapped area, we can fault 523cdcc89bbSArnd Bergmann * but still need to return the data we have 524cdcc89bbSArnd Bergmann * read successfully so far. 525cdcc89bbSArnd Bergmann */ 526cdcc89bbSArnd Bergmann ret = __put_user(ibox_data, udata); 527cdcc89bbSArnd Bergmann if (ret) 528cdcc89bbSArnd Bergmann break; 52967207b96SArnd Bergmann } 53067207b96SArnd Bergmann 531cdcc89bbSArnd Bergmann out: 5328b3d6663SArnd Bergmann spu_release(ctx); 5338b3d6663SArnd Bergmann 534cdcc89bbSArnd Bergmann return count; 53567207b96SArnd Bergmann } 53667207b96SArnd Bergmann 53767207b96SArnd Bergmann static unsigned int spufs_ibox_poll(struct file *file, poll_table *wait) 53867207b96SArnd Bergmann { 5398b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 54067207b96SArnd Bergmann unsigned int mask; 54167207b96SArnd Bergmann 5428b3d6663SArnd Bergmann poll_wait(file, &ctx->ibox_wq, wait); 54367207b96SArnd Bergmann 5443a843d7cSArnd Bergmann spu_acquire(ctx); 5453a843d7cSArnd Bergmann mask = ctx->ops->mbox_stat_poll(ctx, POLLIN | POLLRDNORM); 5463a843d7cSArnd Bergmann spu_release(ctx); 54767207b96SArnd Bergmann 54867207b96SArnd Bergmann return mask; 54967207b96SArnd Bergmann } 55067207b96SArnd Bergmann 5515dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_fops = { 55267207b96SArnd Bergmann .open = spufs_pipe_open, 55367207b96SArnd Bergmann .read = spufs_ibox_read, 55467207b96SArnd Bergmann .poll = spufs_ibox_poll, 55567207b96SArnd Bergmann .fasync = spufs_ibox_fasync, 55667207b96SArnd Bergmann }; 55767207b96SArnd Bergmann 55867207b96SArnd Bergmann static ssize_t spufs_ibox_stat_read(struct file *file, char __user *buf, 55967207b96SArnd Bergmann size_t len, loff_t *pos) 56067207b96SArnd Bergmann { 5618b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 56267207b96SArnd Bergmann u32 ibox_stat; 56367207b96SArnd Bergmann 56467207b96SArnd Bergmann if (len < 4) 56567207b96SArnd Bergmann return -EINVAL; 56667207b96SArnd Bergmann 5678b3d6663SArnd Bergmann spu_acquire(ctx); 5688b3d6663SArnd Bergmann ibox_stat = (ctx->ops->mbox_stat_read(ctx) >> 16) & 0xff; 5698b3d6663SArnd Bergmann spu_release(ctx); 57067207b96SArnd Bergmann 57167207b96SArnd Bergmann if (copy_to_user(buf, &ibox_stat, sizeof ibox_stat)) 57267207b96SArnd Bergmann return -EFAULT; 57367207b96SArnd Bergmann 57467207b96SArnd Bergmann return 4; 57567207b96SArnd Bergmann } 57667207b96SArnd Bergmann 5775dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_stat_fops = { 57867207b96SArnd Bergmann .open = spufs_pipe_open, 57967207b96SArnd Bergmann .read = spufs_ibox_stat_read, 58067207b96SArnd Bergmann }; 58167207b96SArnd Bergmann 58267207b96SArnd Bergmann /* low-level mailbox write */ 5838b3d6663SArnd Bergmann size_t spu_wbox_write(struct spu_context *ctx, u32 data) 58467207b96SArnd Bergmann { 5858b3d6663SArnd Bergmann return ctx->ops->wbox_write(ctx, data); 58667207b96SArnd Bergmann } 58767207b96SArnd Bergmann 58867207b96SArnd Bergmann static int spufs_wbox_fasync(int fd, struct file *file, int on) 58967207b96SArnd Bergmann { 5908b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 5918b3d6663SArnd Bergmann int ret; 5928b3d6663SArnd Bergmann 5938b3d6663SArnd Bergmann ret = fasync_helper(fd, file, on, &ctx->wbox_fasync); 5948b3d6663SArnd Bergmann 5958b3d6663SArnd Bergmann return ret; 5968b3d6663SArnd Bergmann } 5978b3d6663SArnd Bergmann 5988b3d6663SArnd Bergmann /* interrupt-level wbox callback function. */ 5998b3d6663SArnd Bergmann void spufs_wbox_callback(struct spu *spu) 6008b3d6663SArnd Bergmann { 6018b3d6663SArnd Bergmann struct spu_context *ctx = spu->ctx; 6028b3d6663SArnd Bergmann 6038b3d6663SArnd Bergmann wake_up_all(&ctx->wbox_wq); 6048b3d6663SArnd Bergmann kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT); 60567207b96SArnd Bergmann } 60667207b96SArnd Bergmann 607cdcc89bbSArnd Bergmann /* 608cdcc89bbSArnd Bergmann * Write as many bytes to the interrupt mailbox as possible, until 609cdcc89bbSArnd Bergmann * one of the conditions becomes true: 610cdcc89bbSArnd Bergmann * 611cdcc89bbSArnd Bergmann * - the mailbox is full 612cdcc89bbSArnd Bergmann * - end of the user provided buffer 613cdcc89bbSArnd Bergmann * - end of the mapped area 614cdcc89bbSArnd Bergmann * 615cdcc89bbSArnd Bergmann * If the file is opened without O_NONBLOCK, we wait here until 616cdcc89bbSArnd Bergmann * space is availabyl, but return when we have been able to 617cdcc89bbSArnd Bergmann * write something. 618cdcc89bbSArnd Bergmann */ 61967207b96SArnd Bergmann static ssize_t spufs_wbox_write(struct file *file, const char __user *buf, 62067207b96SArnd Bergmann size_t len, loff_t *pos) 62167207b96SArnd Bergmann { 6228b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 623cdcc89bbSArnd Bergmann u32 wbox_data, __user *udata; 624cdcc89bbSArnd Bergmann ssize_t count; 62567207b96SArnd Bergmann 62667207b96SArnd Bergmann if (len < 4) 62767207b96SArnd Bergmann return -EINVAL; 62867207b96SArnd Bergmann 629cdcc89bbSArnd Bergmann udata = (void __user *)buf; 630cdcc89bbSArnd Bergmann if (!access_ok(VERIFY_READ, buf, len)) 631cdcc89bbSArnd Bergmann return -EFAULT; 632cdcc89bbSArnd Bergmann 633cdcc89bbSArnd Bergmann if (__get_user(wbox_data, udata)) 63467207b96SArnd Bergmann return -EFAULT; 63567207b96SArnd Bergmann 6368b3d6663SArnd Bergmann spu_acquire(ctx); 6378b3d6663SArnd Bergmann 638cdcc89bbSArnd Bergmann /* 639cdcc89bbSArnd Bergmann * make sure we can at least write one element, by waiting 640cdcc89bbSArnd Bergmann * in case of !O_NONBLOCK 641cdcc89bbSArnd Bergmann */ 642cdcc89bbSArnd Bergmann count = 0; 64367207b96SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 6448b3d6663SArnd Bergmann if (!spu_wbox_write(ctx, wbox_data)) 645cdcc89bbSArnd Bergmann count = -EAGAIN; 64667207b96SArnd Bergmann } else { 647cdcc89bbSArnd Bergmann count = spufs_wait(ctx->wbox_wq, spu_wbox_write(ctx, wbox_data)); 64867207b96SArnd Bergmann } 64967207b96SArnd Bergmann 650cdcc89bbSArnd Bergmann if (count) 651cdcc89bbSArnd Bergmann goto out; 6528b3d6663SArnd Bergmann 653cdcc89bbSArnd Bergmann /* write aѕ much as possible */ 654cdcc89bbSArnd Bergmann for (count = 4, udata++; (count + 4) <= len; count += 4, udata++) { 655cdcc89bbSArnd Bergmann int ret; 656cdcc89bbSArnd Bergmann ret = __get_user(wbox_data, udata); 657cdcc89bbSArnd Bergmann if (ret) 658cdcc89bbSArnd Bergmann break; 659cdcc89bbSArnd Bergmann 660cdcc89bbSArnd Bergmann ret = spu_wbox_write(ctx, wbox_data); 661cdcc89bbSArnd Bergmann if (ret == 0) 662cdcc89bbSArnd Bergmann break; 663cdcc89bbSArnd Bergmann } 664cdcc89bbSArnd Bergmann 665cdcc89bbSArnd Bergmann out: 666cdcc89bbSArnd Bergmann spu_release(ctx); 667cdcc89bbSArnd Bergmann return count; 66867207b96SArnd Bergmann } 66967207b96SArnd Bergmann 67067207b96SArnd Bergmann static unsigned int spufs_wbox_poll(struct file *file, poll_table *wait) 67167207b96SArnd Bergmann { 6728b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 67367207b96SArnd Bergmann unsigned int mask; 67467207b96SArnd Bergmann 6758b3d6663SArnd Bergmann poll_wait(file, &ctx->wbox_wq, wait); 67667207b96SArnd Bergmann 6773a843d7cSArnd Bergmann spu_acquire(ctx); 6783a843d7cSArnd Bergmann mask = ctx->ops->mbox_stat_poll(ctx, POLLOUT | POLLWRNORM); 6793a843d7cSArnd Bergmann spu_release(ctx); 68067207b96SArnd Bergmann 68167207b96SArnd Bergmann return mask; 68267207b96SArnd Bergmann } 68367207b96SArnd Bergmann 6845dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_fops = { 68567207b96SArnd Bergmann .open = spufs_pipe_open, 68667207b96SArnd Bergmann .write = spufs_wbox_write, 68767207b96SArnd Bergmann .poll = spufs_wbox_poll, 68867207b96SArnd Bergmann .fasync = spufs_wbox_fasync, 68967207b96SArnd Bergmann }; 69067207b96SArnd Bergmann 69167207b96SArnd Bergmann static ssize_t spufs_wbox_stat_read(struct file *file, char __user *buf, 69267207b96SArnd Bergmann size_t len, loff_t *pos) 69367207b96SArnd Bergmann { 6948b3d6663SArnd Bergmann struct spu_context *ctx = file->private_data; 69567207b96SArnd Bergmann u32 wbox_stat; 69667207b96SArnd Bergmann 69767207b96SArnd Bergmann if (len < 4) 69867207b96SArnd Bergmann return -EINVAL; 69967207b96SArnd Bergmann 7008b3d6663SArnd Bergmann spu_acquire(ctx); 7018b3d6663SArnd Bergmann wbox_stat = (ctx->ops->mbox_stat_read(ctx) >> 8) & 0xff; 7028b3d6663SArnd Bergmann spu_release(ctx); 70367207b96SArnd Bergmann 70467207b96SArnd Bergmann if (copy_to_user(buf, &wbox_stat, sizeof wbox_stat)) 70567207b96SArnd Bergmann return -EFAULT; 70667207b96SArnd Bergmann 70767207b96SArnd Bergmann return 4; 70867207b96SArnd Bergmann } 70967207b96SArnd Bergmann 7105dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_stat_fops = { 71167207b96SArnd Bergmann .open = spufs_pipe_open, 71267207b96SArnd Bergmann .read = spufs_wbox_stat_read, 71367207b96SArnd Bergmann }; 71467207b96SArnd Bergmann 7156df10a82SMark Nutter static int spufs_signal1_open(struct inode *inode, struct file *file) 7166df10a82SMark Nutter { 7176df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 7186df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 7196df10a82SMark Nutter file->private_data = ctx; 7206df10a82SMark Nutter ctx->signal1 = inode->i_mapping; 72117e0e270SBenjamin Herrenschmidt smp_wmb(); 7226df10a82SMark Nutter return nonseekable_open(inode, file); 7236df10a82SMark Nutter } 7246df10a82SMark Nutter 725bf1ab978SDwayne Grant McConnell static ssize_t __spufs_signal1_read(struct spu_context *ctx, char __user *buf, 72667207b96SArnd Bergmann size_t len, loff_t *pos) 72767207b96SArnd Bergmann { 72817f88cebSDwayne Grant McConnell int ret = 0; 72967207b96SArnd Bergmann u32 data; 73067207b96SArnd Bergmann 73167207b96SArnd Bergmann if (len < 4) 73267207b96SArnd Bergmann return -EINVAL; 73367207b96SArnd Bergmann 73417f88cebSDwayne Grant McConnell if (ctx->csa.spu_chnlcnt_RW[3]) { 73517f88cebSDwayne Grant McConnell data = ctx->csa.spu_chnldata_RW[3]; 73617f88cebSDwayne Grant McConnell ret = 4; 73717f88cebSDwayne Grant McConnell } 7388b3d6663SArnd Bergmann 73917f88cebSDwayne Grant McConnell if (!ret) 74017f88cebSDwayne Grant McConnell goto out; 74117f88cebSDwayne Grant McConnell 74267207b96SArnd Bergmann if (copy_to_user(buf, &data, 4)) 74367207b96SArnd Bergmann return -EFAULT; 74467207b96SArnd Bergmann 74517f88cebSDwayne Grant McConnell out: 74617f88cebSDwayne Grant McConnell return ret; 74767207b96SArnd Bergmann } 74867207b96SArnd Bergmann 749bf1ab978SDwayne Grant McConnell static ssize_t spufs_signal1_read(struct file *file, char __user *buf, 750bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 751bf1ab978SDwayne Grant McConnell { 752bf1ab978SDwayne Grant McConnell int ret; 753bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 754bf1ab978SDwayne Grant McConnell 755bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 756bf1ab978SDwayne Grant McConnell ret = __spufs_signal1_read(ctx, buf, len, pos); 757bf1ab978SDwayne Grant McConnell spu_release(ctx); 758bf1ab978SDwayne Grant McConnell 759bf1ab978SDwayne Grant McConnell return ret; 760bf1ab978SDwayne Grant McConnell } 761bf1ab978SDwayne Grant McConnell 76267207b96SArnd Bergmann static ssize_t spufs_signal1_write(struct file *file, const char __user *buf, 76367207b96SArnd Bergmann size_t len, loff_t *pos) 76467207b96SArnd Bergmann { 76567207b96SArnd Bergmann struct spu_context *ctx; 76667207b96SArnd Bergmann u32 data; 76767207b96SArnd Bergmann 76867207b96SArnd Bergmann ctx = file->private_data; 76967207b96SArnd Bergmann 77067207b96SArnd Bergmann if (len < 4) 77167207b96SArnd Bergmann return -EINVAL; 77267207b96SArnd Bergmann 77367207b96SArnd Bergmann if (copy_from_user(&data, buf, 4)) 77467207b96SArnd Bergmann return -EFAULT; 77567207b96SArnd Bergmann 7768b3d6663SArnd Bergmann spu_acquire(ctx); 7778b3d6663SArnd Bergmann ctx->ops->signal1_write(ctx, data); 7788b3d6663SArnd Bergmann spu_release(ctx); 77967207b96SArnd Bergmann 78067207b96SArnd Bergmann return 4; 78167207b96SArnd Bergmann } 78267207b96SArnd Bergmann 78378bde53eSBenjamin Herrenschmidt static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma, 78478bde53eSBenjamin Herrenschmidt unsigned long address) 7856df10a82SMark Nutter { 78627d5bf2aSBenjamin Herrenschmidt #if PAGE_SIZE == 0x1000 78778bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x14000, 0x1000); 78827d5bf2aSBenjamin Herrenschmidt #elif PAGE_SIZE == 0x10000 78927d5bf2aSBenjamin Herrenschmidt /* For 64k pages, both signal1 and signal2 can be used to mmap the whole 79027d5bf2aSBenjamin Herrenschmidt * signal 1 and 2 area 79127d5bf2aSBenjamin Herrenschmidt */ 79278bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); 79327d5bf2aSBenjamin Herrenschmidt #else 79427d5bf2aSBenjamin Herrenschmidt #error unsupported page size 79527d5bf2aSBenjamin Herrenschmidt #endif 7966df10a82SMark Nutter } 7976df10a82SMark Nutter 7986df10a82SMark Nutter static struct vm_operations_struct spufs_signal1_mmap_vmops = { 79978bde53eSBenjamin Herrenschmidt .nopfn = spufs_signal1_mmap_nopfn, 8006df10a82SMark Nutter }; 8016df10a82SMark Nutter 8026df10a82SMark Nutter static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma) 8036df10a82SMark Nutter { 8046df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 8056df10a82SMark Nutter return -EINVAL; 8066df10a82SMark Nutter 80778bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 8086df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 80923cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 8106df10a82SMark Nutter 8116df10a82SMark Nutter vma->vm_ops = &spufs_signal1_mmap_vmops; 8126df10a82SMark Nutter return 0; 8136df10a82SMark Nutter } 8146df10a82SMark Nutter 8155dfe4c96SArjan van de Ven static const struct file_operations spufs_signal1_fops = { 8166df10a82SMark Nutter .open = spufs_signal1_open, 81767207b96SArnd Bergmann .read = spufs_signal1_read, 81867207b96SArnd Bergmann .write = spufs_signal1_write, 8196df10a82SMark Nutter .mmap = spufs_signal1_mmap, 82067207b96SArnd Bergmann }; 82167207b96SArnd Bergmann 8226df10a82SMark Nutter static int spufs_signal2_open(struct inode *inode, struct file *file) 8236df10a82SMark Nutter { 8246df10a82SMark Nutter struct spufs_inode_info *i = SPUFS_I(inode); 8256df10a82SMark Nutter struct spu_context *ctx = i->i_ctx; 8266df10a82SMark Nutter file->private_data = ctx; 8276df10a82SMark Nutter ctx->signal2 = inode->i_mapping; 82817e0e270SBenjamin Herrenschmidt smp_wmb(); 8296df10a82SMark Nutter return nonseekable_open(inode, file); 8306df10a82SMark Nutter } 8316df10a82SMark Nutter 832bf1ab978SDwayne Grant McConnell static ssize_t __spufs_signal2_read(struct spu_context *ctx, char __user *buf, 83367207b96SArnd Bergmann size_t len, loff_t *pos) 83467207b96SArnd Bergmann { 83517f88cebSDwayne Grant McConnell int ret = 0; 83667207b96SArnd Bergmann u32 data; 83767207b96SArnd Bergmann 83867207b96SArnd Bergmann if (len < 4) 83967207b96SArnd Bergmann return -EINVAL; 84067207b96SArnd Bergmann 84117f88cebSDwayne Grant McConnell if (ctx->csa.spu_chnlcnt_RW[4]) { 84217f88cebSDwayne Grant McConnell data = ctx->csa.spu_chnldata_RW[4]; 84317f88cebSDwayne Grant McConnell ret = 4; 84417f88cebSDwayne Grant McConnell } 8458b3d6663SArnd Bergmann 84617f88cebSDwayne Grant McConnell if (!ret) 84717f88cebSDwayne Grant McConnell goto out; 84817f88cebSDwayne Grant McConnell 84967207b96SArnd Bergmann if (copy_to_user(buf, &data, 4)) 85067207b96SArnd Bergmann return -EFAULT; 85167207b96SArnd Bergmann 85217f88cebSDwayne Grant McConnell out: 853bf1ab978SDwayne Grant McConnell return ret; 854bf1ab978SDwayne Grant McConnell } 855bf1ab978SDwayne Grant McConnell 856bf1ab978SDwayne Grant McConnell static ssize_t spufs_signal2_read(struct file *file, char __user *buf, 857bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 858bf1ab978SDwayne Grant McConnell { 859bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 860bf1ab978SDwayne Grant McConnell int ret; 861bf1ab978SDwayne Grant McConnell 862bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 863bf1ab978SDwayne Grant McConnell ret = __spufs_signal2_read(ctx, buf, len, pos); 864bf1ab978SDwayne Grant McConnell spu_release(ctx); 865bf1ab978SDwayne Grant McConnell 866bf1ab978SDwayne Grant McConnell return ret; 86767207b96SArnd Bergmann } 86867207b96SArnd Bergmann 86967207b96SArnd Bergmann static ssize_t spufs_signal2_write(struct file *file, const char __user *buf, 87067207b96SArnd Bergmann size_t len, loff_t *pos) 87167207b96SArnd Bergmann { 87267207b96SArnd Bergmann struct spu_context *ctx; 87367207b96SArnd Bergmann u32 data; 87467207b96SArnd Bergmann 87567207b96SArnd Bergmann ctx = file->private_data; 87667207b96SArnd Bergmann 87767207b96SArnd Bergmann if (len < 4) 87867207b96SArnd Bergmann return -EINVAL; 87967207b96SArnd Bergmann 88067207b96SArnd Bergmann if (copy_from_user(&data, buf, 4)) 88167207b96SArnd Bergmann return -EFAULT; 88267207b96SArnd Bergmann 8838b3d6663SArnd Bergmann spu_acquire(ctx); 8848b3d6663SArnd Bergmann ctx->ops->signal2_write(ctx, data); 8858b3d6663SArnd Bergmann spu_release(ctx); 88667207b96SArnd Bergmann 88767207b96SArnd Bergmann return 4; 88867207b96SArnd Bergmann } 88967207b96SArnd Bergmann 89027d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 89178bde53eSBenjamin Herrenschmidt static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma, 89278bde53eSBenjamin Herrenschmidt unsigned long address) 8936df10a82SMark Nutter { 89427d5bf2aSBenjamin Herrenschmidt #if PAGE_SIZE == 0x1000 89578bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000); 89627d5bf2aSBenjamin Herrenschmidt #elif PAGE_SIZE == 0x10000 89727d5bf2aSBenjamin Herrenschmidt /* For 64k pages, both signal1 and signal2 can be used to mmap the whole 89827d5bf2aSBenjamin Herrenschmidt * signal 1 and 2 area 89927d5bf2aSBenjamin Herrenschmidt */ 90078bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x10000, 0x10000); 90127d5bf2aSBenjamin Herrenschmidt #else 90227d5bf2aSBenjamin Herrenschmidt #error unsupported page size 90327d5bf2aSBenjamin Herrenschmidt #endif 9046df10a82SMark Nutter } 9056df10a82SMark Nutter 9066df10a82SMark Nutter static struct vm_operations_struct spufs_signal2_mmap_vmops = { 90778bde53eSBenjamin Herrenschmidt .nopfn = spufs_signal2_mmap_nopfn, 9086df10a82SMark Nutter }; 9096df10a82SMark Nutter 9106df10a82SMark Nutter static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma) 9116df10a82SMark Nutter { 9126df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 9136df10a82SMark Nutter return -EINVAL; 9146df10a82SMark Nutter 91578bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 9166df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 91723cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 9186df10a82SMark Nutter 9196df10a82SMark Nutter vma->vm_ops = &spufs_signal2_mmap_vmops; 9206df10a82SMark Nutter return 0; 9216df10a82SMark Nutter } 92227d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 92327d5bf2aSBenjamin Herrenschmidt #define spufs_signal2_mmap NULL 92427d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 9256df10a82SMark Nutter 9265dfe4c96SArjan van de Ven static const struct file_operations spufs_signal2_fops = { 9276df10a82SMark Nutter .open = spufs_signal2_open, 92867207b96SArnd Bergmann .read = spufs_signal2_read, 92967207b96SArnd Bergmann .write = spufs_signal2_write, 9306df10a82SMark Nutter .mmap = spufs_signal2_mmap, 93167207b96SArnd Bergmann }; 93267207b96SArnd Bergmann 93367207b96SArnd Bergmann static void spufs_signal1_type_set(void *data, u64 val) 93467207b96SArnd Bergmann { 93567207b96SArnd Bergmann struct spu_context *ctx = data; 93667207b96SArnd Bergmann 9378b3d6663SArnd Bergmann spu_acquire(ctx); 9388b3d6663SArnd Bergmann ctx->ops->signal1_type_set(ctx, val); 9398b3d6663SArnd Bergmann spu_release(ctx); 94067207b96SArnd Bergmann } 94167207b96SArnd Bergmann 942bf1ab978SDwayne Grant McConnell static u64 __spufs_signal1_type_get(void *data) 943bf1ab978SDwayne Grant McConnell { 944bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 945bf1ab978SDwayne Grant McConnell return ctx->ops->signal1_type_get(ctx); 946bf1ab978SDwayne Grant McConnell } 947bf1ab978SDwayne Grant McConnell 94867207b96SArnd Bergmann static u64 spufs_signal1_type_get(void *data) 94967207b96SArnd Bergmann { 95067207b96SArnd Bergmann struct spu_context *ctx = data; 9518b3d6663SArnd Bergmann u64 ret; 9528b3d6663SArnd Bergmann 9538b3d6663SArnd Bergmann spu_acquire(ctx); 954bf1ab978SDwayne Grant McConnell ret = __spufs_signal1_type_get(data); 9558b3d6663SArnd Bergmann spu_release(ctx); 9568b3d6663SArnd Bergmann 9578b3d6663SArnd Bergmann return ret; 95867207b96SArnd Bergmann } 95967207b96SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_signal1_type, spufs_signal1_type_get, 96067207b96SArnd Bergmann spufs_signal1_type_set, "%llu"); 96167207b96SArnd Bergmann 96267207b96SArnd Bergmann static void spufs_signal2_type_set(void *data, u64 val) 96367207b96SArnd Bergmann { 96467207b96SArnd Bergmann struct spu_context *ctx = data; 96567207b96SArnd Bergmann 9668b3d6663SArnd Bergmann spu_acquire(ctx); 9678b3d6663SArnd Bergmann ctx->ops->signal2_type_set(ctx, val); 9688b3d6663SArnd Bergmann spu_release(ctx); 96967207b96SArnd Bergmann } 97067207b96SArnd Bergmann 971bf1ab978SDwayne Grant McConnell static u64 __spufs_signal2_type_get(void *data) 972bf1ab978SDwayne Grant McConnell { 973bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 974bf1ab978SDwayne Grant McConnell return ctx->ops->signal2_type_get(ctx); 975bf1ab978SDwayne Grant McConnell } 976bf1ab978SDwayne Grant McConnell 97767207b96SArnd Bergmann static u64 spufs_signal2_type_get(void *data) 97867207b96SArnd Bergmann { 97967207b96SArnd Bergmann struct spu_context *ctx = data; 9808b3d6663SArnd Bergmann u64 ret; 9818b3d6663SArnd Bergmann 9828b3d6663SArnd Bergmann spu_acquire(ctx); 983bf1ab978SDwayne Grant McConnell ret = __spufs_signal2_type_get(data); 9848b3d6663SArnd Bergmann spu_release(ctx); 9858b3d6663SArnd Bergmann 9868b3d6663SArnd Bergmann return ret; 98767207b96SArnd Bergmann } 98867207b96SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get, 98967207b96SArnd Bergmann spufs_signal2_type_set, "%llu"); 99067207b96SArnd Bergmann 99127d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 99278bde53eSBenjamin Herrenschmidt static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma, 99378bde53eSBenjamin Herrenschmidt unsigned long address) 994d9379c4bSarnd@arndb.de { 99578bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x1000); 996d9379c4bSarnd@arndb.de } 997d9379c4bSarnd@arndb.de 998d9379c4bSarnd@arndb.de static struct vm_operations_struct spufs_mss_mmap_vmops = { 99978bde53eSBenjamin Herrenschmidt .nopfn = spufs_mss_mmap_nopfn, 1000d9379c4bSarnd@arndb.de }; 1001d9379c4bSarnd@arndb.de 1002d9379c4bSarnd@arndb.de /* 1003d9379c4bSarnd@arndb.de * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 1004d9379c4bSarnd@arndb.de */ 1005d9379c4bSarnd@arndb.de static int spufs_mss_mmap(struct file *file, struct vm_area_struct *vma) 1006d9379c4bSarnd@arndb.de { 1007d9379c4bSarnd@arndb.de if (!(vma->vm_flags & VM_SHARED)) 1008d9379c4bSarnd@arndb.de return -EINVAL; 1009d9379c4bSarnd@arndb.de 101078bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 1011d9379c4bSarnd@arndb.de vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 101223cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 1013d9379c4bSarnd@arndb.de 1014d9379c4bSarnd@arndb.de vma->vm_ops = &spufs_mss_mmap_vmops; 1015d9379c4bSarnd@arndb.de return 0; 1016d9379c4bSarnd@arndb.de } 101727d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 101827d5bf2aSBenjamin Herrenschmidt #define spufs_mss_mmap NULL 101927d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1020d9379c4bSarnd@arndb.de 1021d9379c4bSarnd@arndb.de static int spufs_mss_open(struct inode *inode, struct file *file) 1022d9379c4bSarnd@arndb.de { 1023d9379c4bSarnd@arndb.de struct spufs_inode_info *i = SPUFS_I(inode); 102417e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 1025d9379c4bSarnd@arndb.de 1026d9379c4bSarnd@arndb.de file->private_data = i->i_ctx; 102717e0e270SBenjamin Herrenschmidt ctx->mss = inode->i_mapping; 102817e0e270SBenjamin Herrenschmidt smp_wmb(); 1029d9379c4bSarnd@arndb.de return nonseekable_open(inode, file); 1030d9379c4bSarnd@arndb.de } 1031d9379c4bSarnd@arndb.de 10325dfe4c96SArjan van de Ven static const struct file_operations spufs_mss_fops = { 1033d9379c4bSarnd@arndb.de .open = spufs_mss_open, 1034d9379c4bSarnd@arndb.de .mmap = spufs_mss_mmap, 103527d5bf2aSBenjamin Herrenschmidt }; 103627d5bf2aSBenjamin Herrenschmidt 103778bde53eSBenjamin Herrenschmidt static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma, 103878bde53eSBenjamin Herrenschmidt unsigned long address) 103927d5bf2aSBenjamin Herrenschmidt { 104078bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x0000, 0x20000); 104127d5bf2aSBenjamin Herrenschmidt } 104227d5bf2aSBenjamin Herrenschmidt 104327d5bf2aSBenjamin Herrenschmidt static struct vm_operations_struct spufs_psmap_mmap_vmops = { 104478bde53eSBenjamin Herrenschmidt .nopfn = spufs_psmap_mmap_nopfn, 104527d5bf2aSBenjamin Herrenschmidt }; 104627d5bf2aSBenjamin Herrenschmidt 104727d5bf2aSBenjamin Herrenschmidt /* 104827d5bf2aSBenjamin Herrenschmidt * mmap support for full problem state area [0x00000 - 0x1ffff]. 104927d5bf2aSBenjamin Herrenschmidt */ 105027d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_mmap(struct file *file, struct vm_area_struct *vma) 105127d5bf2aSBenjamin Herrenschmidt { 105227d5bf2aSBenjamin Herrenschmidt if (!(vma->vm_flags & VM_SHARED)) 105327d5bf2aSBenjamin Herrenschmidt return -EINVAL; 105427d5bf2aSBenjamin Herrenschmidt 105578bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 105627d5bf2aSBenjamin Herrenschmidt vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 105727d5bf2aSBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 105827d5bf2aSBenjamin Herrenschmidt 105927d5bf2aSBenjamin Herrenschmidt vma->vm_ops = &spufs_psmap_mmap_vmops; 106027d5bf2aSBenjamin Herrenschmidt return 0; 106127d5bf2aSBenjamin Herrenschmidt } 106227d5bf2aSBenjamin Herrenschmidt 106327d5bf2aSBenjamin Herrenschmidt static int spufs_psmap_open(struct inode *inode, struct file *file) 106427d5bf2aSBenjamin Herrenschmidt { 106527d5bf2aSBenjamin Herrenschmidt struct spufs_inode_info *i = SPUFS_I(inode); 106617e0e270SBenjamin Herrenschmidt struct spu_context *ctx = i->i_ctx; 106727d5bf2aSBenjamin Herrenschmidt 106827d5bf2aSBenjamin Herrenschmidt file->private_data = i->i_ctx; 106917e0e270SBenjamin Herrenschmidt ctx->psmap = inode->i_mapping; 107017e0e270SBenjamin Herrenschmidt smp_wmb(); 107127d5bf2aSBenjamin Herrenschmidt return nonseekable_open(inode, file); 107227d5bf2aSBenjamin Herrenschmidt } 107327d5bf2aSBenjamin Herrenschmidt 10745dfe4c96SArjan van de Ven static const struct file_operations spufs_psmap_fops = { 107527d5bf2aSBenjamin Herrenschmidt .open = spufs_psmap_open, 107627d5bf2aSBenjamin Herrenschmidt .mmap = spufs_psmap_mmap, 1077d9379c4bSarnd@arndb.de }; 1078d9379c4bSarnd@arndb.de 1079d9379c4bSarnd@arndb.de 108027d5bf2aSBenjamin Herrenschmidt #if SPUFS_MMAP_4K 108178bde53eSBenjamin Herrenschmidt static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma, 108278bde53eSBenjamin Herrenschmidt unsigned long address) 10836df10a82SMark Nutter { 108478bde53eSBenjamin Herrenschmidt return spufs_ps_nopfn(vma, address, 0x3000, 0x1000); 10856df10a82SMark Nutter } 10866df10a82SMark Nutter 10876df10a82SMark Nutter static struct vm_operations_struct spufs_mfc_mmap_vmops = { 108878bde53eSBenjamin Herrenschmidt .nopfn = spufs_mfc_mmap_nopfn, 10896df10a82SMark Nutter }; 10906df10a82SMark Nutter 10916df10a82SMark Nutter /* 10926df10a82SMark Nutter * mmap support for problem state MFC DMA area [0x0000 - 0x0fff]. 10936df10a82SMark Nutter */ 10946df10a82SMark Nutter static int spufs_mfc_mmap(struct file *file, struct vm_area_struct *vma) 10956df10a82SMark Nutter { 10966df10a82SMark Nutter if (!(vma->vm_flags & VM_SHARED)) 10976df10a82SMark Nutter return -EINVAL; 10986df10a82SMark Nutter 109978bde53eSBenjamin Herrenschmidt vma->vm_flags |= VM_IO | VM_PFNMAP; 11006df10a82SMark Nutter vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot) 110123cc7701SBenjamin Herrenschmidt | _PAGE_NO_CACHE | _PAGE_GUARDED); 11026df10a82SMark Nutter 11036df10a82SMark Nutter vma->vm_ops = &spufs_mfc_mmap_vmops; 11046df10a82SMark Nutter return 0; 11056df10a82SMark Nutter } 110627d5bf2aSBenjamin Herrenschmidt #else /* SPUFS_MMAP_4K */ 110727d5bf2aSBenjamin Herrenschmidt #define spufs_mfc_mmap NULL 110827d5bf2aSBenjamin Herrenschmidt #endif /* !SPUFS_MMAP_4K */ 1109a33a7d73SArnd Bergmann 1110a33a7d73SArnd Bergmann static int spufs_mfc_open(struct inode *inode, struct file *file) 1111a33a7d73SArnd Bergmann { 1112a33a7d73SArnd Bergmann struct spufs_inode_info *i = SPUFS_I(inode); 1113a33a7d73SArnd Bergmann struct spu_context *ctx = i->i_ctx; 1114a33a7d73SArnd Bergmann 1115a33a7d73SArnd Bergmann /* we don't want to deal with DMA into other processes */ 1116a33a7d73SArnd Bergmann if (ctx->owner != current->mm) 1117a33a7d73SArnd Bergmann return -EINVAL; 1118a33a7d73SArnd Bergmann 1119a33a7d73SArnd Bergmann if (atomic_read(&inode->i_count) != 1) 1120a33a7d73SArnd Bergmann return -EBUSY; 1121a33a7d73SArnd Bergmann 1122a33a7d73SArnd Bergmann file->private_data = ctx; 112317e0e270SBenjamin Herrenschmidt ctx->mfc = inode->i_mapping; 112417e0e270SBenjamin Herrenschmidt smp_wmb(); 1125a33a7d73SArnd Bergmann return nonseekable_open(inode, file); 1126a33a7d73SArnd Bergmann } 1127a33a7d73SArnd Bergmann 1128a33a7d73SArnd Bergmann /* interrupt-level mfc callback function. */ 1129a33a7d73SArnd Bergmann void spufs_mfc_callback(struct spu *spu) 1130a33a7d73SArnd Bergmann { 1131a33a7d73SArnd Bergmann struct spu_context *ctx = spu->ctx; 1132a33a7d73SArnd Bergmann 1133a33a7d73SArnd Bergmann wake_up_all(&ctx->mfc_wq); 1134a33a7d73SArnd Bergmann 1135a33a7d73SArnd Bergmann pr_debug("%s %s\n", __FUNCTION__, spu->name); 1136a33a7d73SArnd Bergmann if (ctx->mfc_fasync) { 1137a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1138a33a7d73SArnd Bergmann unsigned int mask; 1139a33a7d73SArnd Bergmann 1140a33a7d73SArnd Bergmann /* no need for spu_acquire in interrupt context */ 1141a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1142a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1143a33a7d73SArnd Bergmann 1144a33a7d73SArnd Bergmann mask = 0; 1145a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1146a33a7d73SArnd Bergmann mask |= POLLOUT; 1147a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1148a33a7d73SArnd Bergmann mask |= POLLIN; 1149a33a7d73SArnd Bergmann 1150a33a7d73SArnd Bergmann kill_fasync(&ctx->mfc_fasync, SIGIO, mask); 1151a33a7d73SArnd Bergmann } 1152a33a7d73SArnd Bergmann } 1153a33a7d73SArnd Bergmann 1154a33a7d73SArnd Bergmann static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status) 1155a33a7d73SArnd Bergmann { 1156a33a7d73SArnd Bergmann /* See if there is one tag group is complete */ 1157a33a7d73SArnd Bergmann /* FIXME we need locking around tagwait */ 1158a33a7d73SArnd Bergmann *status = ctx->ops->read_mfc_tagstatus(ctx) & ctx->tagwait; 1159a33a7d73SArnd Bergmann ctx->tagwait &= ~*status; 1160a33a7d73SArnd Bergmann if (*status) 1161a33a7d73SArnd Bergmann return 1; 1162a33a7d73SArnd Bergmann 1163a33a7d73SArnd Bergmann /* enable interrupt waiting for any tag group, 1164a33a7d73SArnd Bergmann may silently fail if interrupts are already enabled */ 1165a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1166a33a7d73SArnd Bergmann return 0; 1167a33a7d73SArnd Bergmann } 1168a33a7d73SArnd Bergmann 1169a33a7d73SArnd Bergmann static ssize_t spufs_mfc_read(struct file *file, char __user *buffer, 1170a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1171a33a7d73SArnd Bergmann { 1172a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1173a33a7d73SArnd Bergmann int ret = -EINVAL; 1174a33a7d73SArnd Bergmann u32 status; 1175a33a7d73SArnd Bergmann 1176a33a7d73SArnd Bergmann if (size != 4) 1177a33a7d73SArnd Bergmann goto out; 1178a33a7d73SArnd Bergmann 1179a33a7d73SArnd Bergmann spu_acquire(ctx); 1180a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1181a33a7d73SArnd Bergmann status = ctx->ops->read_mfc_tagstatus(ctx); 1182a33a7d73SArnd Bergmann if (!(status & ctx->tagwait)) 1183a33a7d73SArnd Bergmann ret = -EAGAIN; 1184a33a7d73SArnd Bergmann else 1185a33a7d73SArnd Bergmann ctx->tagwait &= ~status; 1186a33a7d73SArnd Bergmann } else { 1187a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1188a33a7d73SArnd Bergmann spufs_read_mfc_tagstatus(ctx, &status)); 1189a33a7d73SArnd Bergmann } 1190a33a7d73SArnd Bergmann spu_release(ctx); 1191a33a7d73SArnd Bergmann 1192a33a7d73SArnd Bergmann if (ret) 1193a33a7d73SArnd Bergmann goto out; 1194a33a7d73SArnd Bergmann 1195a33a7d73SArnd Bergmann ret = 4; 1196a33a7d73SArnd Bergmann if (copy_to_user(buffer, &status, 4)) 1197a33a7d73SArnd Bergmann ret = -EFAULT; 1198a33a7d73SArnd Bergmann 1199a33a7d73SArnd Bergmann out: 1200a33a7d73SArnd Bergmann return ret; 1201a33a7d73SArnd Bergmann } 1202a33a7d73SArnd Bergmann 1203a33a7d73SArnd Bergmann static int spufs_check_valid_dma(struct mfc_dma_command *cmd) 1204a33a7d73SArnd Bergmann { 1205a33a7d73SArnd Bergmann pr_debug("queueing DMA %x %lx %x %x %x\n", cmd->lsa, 1206a33a7d73SArnd Bergmann cmd->ea, cmd->size, cmd->tag, cmd->cmd); 1207a33a7d73SArnd Bergmann 1208a33a7d73SArnd Bergmann switch (cmd->cmd) { 1209a33a7d73SArnd Bergmann case MFC_PUT_CMD: 1210a33a7d73SArnd Bergmann case MFC_PUTF_CMD: 1211a33a7d73SArnd Bergmann case MFC_PUTB_CMD: 1212a33a7d73SArnd Bergmann case MFC_GET_CMD: 1213a33a7d73SArnd Bergmann case MFC_GETF_CMD: 1214a33a7d73SArnd Bergmann case MFC_GETB_CMD: 1215a33a7d73SArnd Bergmann break; 1216a33a7d73SArnd Bergmann default: 1217a33a7d73SArnd Bergmann pr_debug("invalid DMA opcode %x\n", cmd->cmd); 1218a33a7d73SArnd Bergmann return -EIO; 1219a33a7d73SArnd Bergmann } 1220a33a7d73SArnd Bergmann 1221a33a7d73SArnd Bergmann if ((cmd->lsa & 0xf) != (cmd->ea &0xf)) { 1222a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment, ea %lx lsa %x\n", 1223a33a7d73SArnd Bergmann cmd->ea, cmd->lsa); 1224a33a7d73SArnd Bergmann return -EIO; 1225a33a7d73SArnd Bergmann } 1226a33a7d73SArnd Bergmann 1227a33a7d73SArnd Bergmann switch (cmd->size & 0xf) { 1228a33a7d73SArnd Bergmann case 1: 1229a33a7d73SArnd Bergmann break; 1230a33a7d73SArnd Bergmann case 2: 1231a33a7d73SArnd Bergmann if (cmd->lsa & 1) 1232a33a7d73SArnd Bergmann goto error; 1233a33a7d73SArnd Bergmann break; 1234a33a7d73SArnd Bergmann case 4: 1235a33a7d73SArnd Bergmann if (cmd->lsa & 3) 1236a33a7d73SArnd Bergmann goto error; 1237a33a7d73SArnd Bergmann break; 1238a33a7d73SArnd Bergmann case 8: 1239a33a7d73SArnd Bergmann if (cmd->lsa & 7) 1240a33a7d73SArnd Bergmann goto error; 1241a33a7d73SArnd Bergmann break; 1242a33a7d73SArnd Bergmann case 0: 1243a33a7d73SArnd Bergmann if (cmd->lsa & 15) 1244a33a7d73SArnd Bergmann goto error; 1245a33a7d73SArnd Bergmann break; 1246a33a7d73SArnd Bergmann error: 1247a33a7d73SArnd Bergmann default: 1248a33a7d73SArnd Bergmann pr_debug("invalid DMA alignment %x for size %x\n", 1249a33a7d73SArnd Bergmann cmd->lsa & 0xf, cmd->size); 1250a33a7d73SArnd Bergmann return -EIO; 1251a33a7d73SArnd Bergmann } 1252a33a7d73SArnd Bergmann 1253a33a7d73SArnd Bergmann if (cmd->size > 16 * 1024) { 1254a33a7d73SArnd Bergmann pr_debug("invalid DMA size %x\n", cmd->size); 1255a33a7d73SArnd Bergmann return -EIO; 1256a33a7d73SArnd Bergmann } 1257a33a7d73SArnd Bergmann 1258a33a7d73SArnd Bergmann if (cmd->tag & 0xfff0) { 1259a33a7d73SArnd Bergmann /* we reserve the higher tag numbers for kernel use */ 1260a33a7d73SArnd Bergmann pr_debug("invalid DMA tag\n"); 1261a33a7d73SArnd Bergmann return -EIO; 1262a33a7d73SArnd Bergmann } 1263a33a7d73SArnd Bergmann 1264a33a7d73SArnd Bergmann if (cmd->class) { 1265a33a7d73SArnd Bergmann /* not supported in this version */ 1266a33a7d73SArnd Bergmann pr_debug("invalid DMA class\n"); 1267a33a7d73SArnd Bergmann return -EIO; 1268a33a7d73SArnd Bergmann } 1269a33a7d73SArnd Bergmann 1270a33a7d73SArnd Bergmann return 0; 1271a33a7d73SArnd Bergmann } 1272a33a7d73SArnd Bergmann 1273a33a7d73SArnd Bergmann static int spu_send_mfc_command(struct spu_context *ctx, 1274a33a7d73SArnd Bergmann struct mfc_dma_command cmd, 1275a33a7d73SArnd Bergmann int *error) 1276a33a7d73SArnd Bergmann { 1277a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1278a33a7d73SArnd Bergmann if (*error == -EAGAIN) { 1279a33a7d73SArnd Bergmann /* wait for any tag group to complete 1280a33a7d73SArnd Bergmann so we have space for the new command */ 1281a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 1); 1282a33a7d73SArnd Bergmann /* try again, because the queue might be 1283a33a7d73SArnd Bergmann empty again */ 1284a33a7d73SArnd Bergmann *error = ctx->ops->send_mfc_command(ctx, &cmd); 1285a33a7d73SArnd Bergmann if (*error == -EAGAIN) 1286a33a7d73SArnd Bergmann return 0; 1287a33a7d73SArnd Bergmann } 1288a33a7d73SArnd Bergmann return 1; 1289a33a7d73SArnd Bergmann } 1290a33a7d73SArnd Bergmann 1291a33a7d73SArnd Bergmann static ssize_t spufs_mfc_write(struct file *file, const char __user *buffer, 1292a33a7d73SArnd Bergmann size_t size, loff_t *pos) 1293a33a7d73SArnd Bergmann { 1294a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1295a33a7d73SArnd Bergmann struct mfc_dma_command cmd; 1296a33a7d73SArnd Bergmann int ret = -EINVAL; 1297a33a7d73SArnd Bergmann 1298a33a7d73SArnd Bergmann if (size != sizeof cmd) 1299a33a7d73SArnd Bergmann goto out; 1300a33a7d73SArnd Bergmann 1301a33a7d73SArnd Bergmann ret = -EFAULT; 1302a33a7d73SArnd Bergmann if (copy_from_user(&cmd, buffer, sizeof cmd)) 1303a33a7d73SArnd Bergmann goto out; 1304a33a7d73SArnd Bergmann 1305a33a7d73SArnd Bergmann ret = spufs_check_valid_dma(&cmd); 1306a33a7d73SArnd Bergmann if (ret) 1307a33a7d73SArnd Bergmann goto out; 1308a33a7d73SArnd Bergmann 1309a33a7d73SArnd Bergmann spu_acquire_runnable(ctx); 1310a33a7d73SArnd Bergmann if (file->f_flags & O_NONBLOCK) { 1311a33a7d73SArnd Bergmann ret = ctx->ops->send_mfc_command(ctx, &cmd); 1312a33a7d73SArnd Bergmann } else { 1313a33a7d73SArnd Bergmann int status; 1314a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1315a33a7d73SArnd Bergmann spu_send_mfc_command(ctx, cmd, &status)); 1316a33a7d73SArnd Bergmann if (status) 1317a33a7d73SArnd Bergmann ret = status; 1318a33a7d73SArnd Bergmann } 1319a33a7d73SArnd Bergmann spu_release(ctx); 1320a33a7d73SArnd Bergmann 1321a33a7d73SArnd Bergmann if (ret) 1322a33a7d73SArnd Bergmann goto out; 1323a33a7d73SArnd Bergmann 1324a33a7d73SArnd Bergmann ctx->tagwait |= 1 << cmd.tag; 13253692dc66SMasato Noguchi ret = size; 1326a33a7d73SArnd Bergmann 1327a33a7d73SArnd Bergmann out: 1328a33a7d73SArnd Bergmann return ret; 1329a33a7d73SArnd Bergmann } 1330a33a7d73SArnd Bergmann 1331a33a7d73SArnd Bergmann static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait) 1332a33a7d73SArnd Bergmann { 1333a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1334a33a7d73SArnd Bergmann u32 free_elements, tagstatus; 1335a33a7d73SArnd Bergmann unsigned int mask; 1336a33a7d73SArnd Bergmann 1337a33a7d73SArnd Bergmann spu_acquire(ctx); 1338a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2); 1339a33a7d73SArnd Bergmann free_elements = ctx->ops->get_mfc_free_elements(ctx); 1340a33a7d73SArnd Bergmann tagstatus = ctx->ops->read_mfc_tagstatus(ctx); 1341a33a7d73SArnd Bergmann spu_release(ctx); 1342a33a7d73SArnd Bergmann 1343a33a7d73SArnd Bergmann poll_wait(file, &ctx->mfc_wq, wait); 1344a33a7d73SArnd Bergmann 1345a33a7d73SArnd Bergmann mask = 0; 1346a33a7d73SArnd Bergmann if (free_elements & 0xffff) 1347a33a7d73SArnd Bergmann mask |= POLLOUT | POLLWRNORM; 1348a33a7d73SArnd Bergmann if (tagstatus & ctx->tagwait) 1349a33a7d73SArnd Bergmann mask |= POLLIN | POLLRDNORM; 1350a33a7d73SArnd Bergmann 1351a33a7d73SArnd Bergmann pr_debug("%s: free %d tagstatus %d tagwait %d\n", __FUNCTION__, 1352a33a7d73SArnd Bergmann free_elements, tagstatus, ctx->tagwait); 1353a33a7d73SArnd Bergmann 1354a33a7d73SArnd Bergmann return mask; 1355a33a7d73SArnd Bergmann } 1356a33a7d73SArnd Bergmann 135773b6af8aSAl Viro static int spufs_mfc_flush(struct file *file, fl_owner_t id) 1358a33a7d73SArnd Bergmann { 1359a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1360a33a7d73SArnd Bergmann int ret; 1361a33a7d73SArnd Bergmann 1362a33a7d73SArnd Bergmann spu_acquire(ctx); 1363a33a7d73SArnd Bergmann #if 0 1364a33a7d73SArnd Bergmann /* this currently hangs */ 1365a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1366a33a7d73SArnd Bergmann ctx->ops->set_mfc_query(ctx, ctx->tagwait, 2)); 1367a33a7d73SArnd Bergmann if (ret) 1368a33a7d73SArnd Bergmann goto out; 1369a33a7d73SArnd Bergmann ret = spufs_wait(ctx->mfc_wq, 1370a33a7d73SArnd Bergmann ctx->ops->read_mfc_tagstatus(ctx) == ctx->tagwait); 1371a33a7d73SArnd Bergmann out: 1372a33a7d73SArnd Bergmann #else 1373a33a7d73SArnd Bergmann ret = 0; 1374a33a7d73SArnd Bergmann #endif 1375a33a7d73SArnd Bergmann spu_release(ctx); 1376a33a7d73SArnd Bergmann 1377a33a7d73SArnd Bergmann return ret; 1378a33a7d73SArnd Bergmann } 1379a33a7d73SArnd Bergmann 1380a33a7d73SArnd Bergmann static int spufs_mfc_fsync(struct file *file, struct dentry *dentry, 1381a33a7d73SArnd Bergmann int datasync) 1382a33a7d73SArnd Bergmann { 138373b6af8aSAl Viro return spufs_mfc_flush(file, NULL); 1384a33a7d73SArnd Bergmann } 1385a33a7d73SArnd Bergmann 1386a33a7d73SArnd Bergmann static int spufs_mfc_fasync(int fd, struct file *file, int on) 1387a33a7d73SArnd Bergmann { 1388a33a7d73SArnd Bergmann struct spu_context *ctx = file->private_data; 1389a33a7d73SArnd Bergmann 1390a33a7d73SArnd Bergmann return fasync_helper(fd, file, on, &ctx->mfc_fasync); 1391a33a7d73SArnd Bergmann } 1392a33a7d73SArnd Bergmann 13935dfe4c96SArjan van de Ven static const struct file_operations spufs_mfc_fops = { 1394a33a7d73SArnd Bergmann .open = spufs_mfc_open, 1395a33a7d73SArnd Bergmann .read = spufs_mfc_read, 1396a33a7d73SArnd Bergmann .write = spufs_mfc_write, 1397a33a7d73SArnd Bergmann .poll = spufs_mfc_poll, 1398a33a7d73SArnd Bergmann .flush = spufs_mfc_flush, 1399a33a7d73SArnd Bergmann .fsync = spufs_mfc_fsync, 1400a33a7d73SArnd Bergmann .fasync = spufs_mfc_fasync, 14016df10a82SMark Nutter .mmap = spufs_mfc_mmap, 1402a33a7d73SArnd Bergmann }; 1403a33a7d73SArnd Bergmann 140467207b96SArnd Bergmann static void spufs_npc_set(void *data, u64 val) 140567207b96SArnd Bergmann { 140667207b96SArnd Bergmann struct spu_context *ctx = data; 14078b3d6663SArnd Bergmann spu_acquire(ctx); 14088b3d6663SArnd Bergmann ctx->ops->npc_write(ctx, val); 14098b3d6663SArnd Bergmann spu_release(ctx); 141067207b96SArnd Bergmann } 141167207b96SArnd Bergmann 141267207b96SArnd Bergmann static u64 spufs_npc_get(void *data) 141367207b96SArnd Bergmann { 141467207b96SArnd Bergmann struct spu_context *ctx = data; 141567207b96SArnd Bergmann u64 ret; 14168b3d6663SArnd Bergmann spu_acquire(ctx); 14178b3d6663SArnd Bergmann ret = ctx->ops->npc_read(ctx); 14188b3d6663SArnd Bergmann spu_release(ctx); 141967207b96SArnd Bergmann return ret; 142067207b96SArnd Bergmann } 14219b5047e2SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_npc_ops, spufs_npc_get, spufs_npc_set, 14229b5047e2SDwayne Grant McConnell "0x%llx\n") 142367207b96SArnd Bergmann 14248b3d6663SArnd Bergmann static void spufs_decr_set(void *data, u64 val) 14258b3d6663SArnd Bergmann { 14268b3d6663SArnd Bergmann struct spu_context *ctx = data; 14278b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 14288b3d6663SArnd Bergmann spu_acquire_saved(ctx); 14298b3d6663SArnd Bergmann lscsa->decr.slot[0] = (u32) val; 14308b3d6663SArnd Bergmann spu_release(ctx); 14318b3d6663SArnd Bergmann } 14328b3d6663SArnd Bergmann 1433bf1ab978SDwayne Grant McConnell static u64 __spufs_decr_get(void *data) 14348b3d6663SArnd Bergmann { 14358b3d6663SArnd Bergmann struct spu_context *ctx = data; 14368b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1437bf1ab978SDwayne Grant McConnell return lscsa->decr.slot[0]; 1438bf1ab978SDwayne Grant McConnell } 1439bf1ab978SDwayne Grant McConnell 1440bf1ab978SDwayne Grant McConnell static u64 spufs_decr_get(void *data) 1441bf1ab978SDwayne Grant McConnell { 1442bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 14438b3d6663SArnd Bergmann u64 ret; 14448b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1445bf1ab978SDwayne Grant McConnell ret = __spufs_decr_get(data); 14468b3d6663SArnd Bergmann spu_release(ctx); 14478b3d6663SArnd Bergmann return ret; 14488b3d6663SArnd Bergmann } 14498b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_ops, spufs_decr_get, spufs_decr_set, 14509b5047e2SDwayne Grant McConnell "0x%llx\n") 14518b3d6663SArnd Bergmann 14528b3d6663SArnd Bergmann static void spufs_decr_status_set(void *data, u64 val) 14538b3d6663SArnd Bergmann { 14548b3d6663SArnd Bergmann struct spu_context *ctx = data; 14558b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 14568b3d6663SArnd Bergmann spu_acquire_saved(ctx); 14578b3d6663SArnd Bergmann lscsa->decr_status.slot[0] = (u32) val; 14588b3d6663SArnd Bergmann spu_release(ctx); 14598b3d6663SArnd Bergmann } 14608b3d6663SArnd Bergmann 1461bf1ab978SDwayne Grant McConnell static u64 __spufs_decr_status_get(void *data) 14628b3d6663SArnd Bergmann { 14638b3d6663SArnd Bergmann struct spu_context *ctx = data; 14648b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1465bf1ab978SDwayne Grant McConnell return lscsa->decr_status.slot[0]; 1466bf1ab978SDwayne Grant McConnell } 1467bf1ab978SDwayne Grant McConnell 1468bf1ab978SDwayne Grant McConnell static u64 spufs_decr_status_get(void *data) 1469bf1ab978SDwayne Grant McConnell { 1470bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 14718b3d6663SArnd Bergmann u64 ret; 14728b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1473bf1ab978SDwayne Grant McConnell ret = __spufs_decr_status_get(data); 14748b3d6663SArnd Bergmann spu_release(ctx); 14758b3d6663SArnd Bergmann return ret; 14768b3d6663SArnd Bergmann } 14778b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_decr_status_ops, spufs_decr_status_get, 14789b5047e2SDwayne Grant McConnell spufs_decr_status_set, "0x%llx\n") 14798b3d6663SArnd Bergmann 14808b3d6663SArnd Bergmann static void spufs_event_mask_set(void *data, u64 val) 14818b3d6663SArnd Bergmann { 14828b3d6663SArnd Bergmann struct spu_context *ctx = data; 14838b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 14848b3d6663SArnd Bergmann spu_acquire_saved(ctx); 14858b3d6663SArnd Bergmann lscsa->event_mask.slot[0] = (u32) val; 14868b3d6663SArnd Bergmann spu_release(ctx); 14878b3d6663SArnd Bergmann } 14888b3d6663SArnd Bergmann 1489bf1ab978SDwayne Grant McConnell static u64 __spufs_event_mask_get(void *data) 14908b3d6663SArnd Bergmann { 14918b3d6663SArnd Bergmann struct spu_context *ctx = data; 14928b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 1493bf1ab978SDwayne Grant McConnell return lscsa->event_mask.slot[0]; 1494bf1ab978SDwayne Grant McConnell } 1495bf1ab978SDwayne Grant McConnell 1496bf1ab978SDwayne Grant McConnell static u64 spufs_event_mask_get(void *data) 1497bf1ab978SDwayne Grant McConnell { 1498bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 14998b3d6663SArnd Bergmann u64 ret; 15008b3d6663SArnd Bergmann spu_acquire_saved(ctx); 1501bf1ab978SDwayne Grant McConnell ret = __spufs_event_mask_get(data); 15028b3d6663SArnd Bergmann spu_release(ctx); 15038b3d6663SArnd Bergmann return ret; 15048b3d6663SArnd Bergmann } 15058b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_event_mask_ops, spufs_event_mask_get, 15069b5047e2SDwayne Grant McConnell spufs_event_mask_set, "0x%llx\n") 15078b3d6663SArnd Bergmann 1508bf1ab978SDwayne Grant McConnell static u64 __spufs_event_status_get(void *data) 1509b9e3bd77SDwayne Grant McConnell { 1510b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = data; 1511b9e3bd77SDwayne Grant McConnell struct spu_state *state = &ctx->csa; 1512b9e3bd77SDwayne Grant McConnell u64 stat; 1513b9e3bd77SDwayne Grant McConnell stat = state->spu_chnlcnt_RW[0]; 1514b9e3bd77SDwayne Grant McConnell if (stat) 1515bf1ab978SDwayne Grant McConnell return state->spu_chnldata_RW[0]; 1516bf1ab978SDwayne Grant McConnell return 0; 1517bf1ab978SDwayne Grant McConnell } 1518bf1ab978SDwayne Grant McConnell 1519bf1ab978SDwayne Grant McConnell static u64 spufs_event_status_get(void *data) 1520bf1ab978SDwayne Grant McConnell { 1521bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 1522bf1ab978SDwayne Grant McConnell u64 ret = 0; 1523bf1ab978SDwayne Grant McConnell 1524bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1525bf1ab978SDwayne Grant McConnell ret = __spufs_event_status_get(data); 1526b9e3bd77SDwayne Grant McConnell spu_release(ctx); 1527b9e3bd77SDwayne Grant McConnell return ret; 1528b9e3bd77SDwayne Grant McConnell } 1529b9e3bd77SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_event_status_ops, spufs_event_status_get, 1530b9e3bd77SDwayne Grant McConnell NULL, "0x%llx\n") 1531b9e3bd77SDwayne Grant McConnell 15328b3d6663SArnd Bergmann static void spufs_srr0_set(void *data, u64 val) 15338b3d6663SArnd Bergmann { 15348b3d6663SArnd Bergmann struct spu_context *ctx = data; 15358b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 15368b3d6663SArnd Bergmann spu_acquire_saved(ctx); 15378b3d6663SArnd Bergmann lscsa->srr0.slot[0] = (u32) val; 15388b3d6663SArnd Bergmann spu_release(ctx); 15398b3d6663SArnd Bergmann } 15408b3d6663SArnd Bergmann 15418b3d6663SArnd Bergmann static u64 spufs_srr0_get(void *data) 15428b3d6663SArnd Bergmann { 15438b3d6663SArnd Bergmann struct spu_context *ctx = data; 15448b3d6663SArnd Bergmann struct spu_lscsa *lscsa = ctx->csa.lscsa; 15458b3d6663SArnd Bergmann u64 ret; 15468b3d6663SArnd Bergmann spu_acquire_saved(ctx); 15478b3d6663SArnd Bergmann ret = lscsa->srr0.slot[0]; 15488b3d6663SArnd Bergmann spu_release(ctx); 15498b3d6663SArnd Bergmann return ret; 15508b3d6663SArnd Bergmann } 15518b3d6663SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_srr0_ops, spufs_srr0_get, spufs_srr0_set, 15529b5047e2SDwayne Grant McConnell "0x%llx\n") 15538b3d6663SArnd Bergmann 15547b1a7014Sarnd@arndb.de static u64 spufs_id_get(void *data) 15557b1a7014Sarnd@arndb.de { 15567b1a7014Sarnd@arndb.de struct spu_context *ctx = data; 15577b1a7014Sarnd@arndb.de u64 num; 15587b1a7014Sarnd@arndb.de 15597b1a7014Sarnd@arndb.de spu_acquire(ctx); 15607b1a7014Sarnd@arndb.de if (ctx->state == SPU_STATE_RUNNABLE) 15617b1a7014Sarnd@arndb.de num = ctx->spu->number; 15627b1a7014Sarnd@arndb.de else 15637b1a7014Sarnd@arndb.de num = (unsigned int)-1; 15647b1a7014Sarnd@arndb.de spu_release(ctx); 15657b1a7014Sarnd@arndb.de 15667b1a7014Sarnd@arndb.de return num; 15677b1a7014Sarnd@arndb.de } 1568e45d6634SAl Viro DEFINE_SIMPLE_ATTRIBUTE(spufs_id_ops, spufs_id_get, NULL, "0x%llx\n") 15697b1a7014Sarnd@arndb.de 1570bf1ab978SDwayne Grant McConnell static u64 __spufs_object_id_get(void *data) 157186767277SArnd Bergmann { 157286767277SArnd Bergmann struct spu_context *ctx = data; 157386767277SArnd Bergmann return ctx->object_id; 157486767277SArnd Bergmann } 157586767277SArnd Bergmann 1576bf1ab978SDwayne Grant McConnell static u64 spufs_object_id_get(void *data) 1577bf1ab978SDwayne Grant McConnell { 1578bf1ab978SDwayne Grant McConnell /* FIXME: Should there really be no locking here? */ 1579bf1ab978SDwayne Grant McConnell return __spufs_object_id_get(data); 1580bf1ab978SDwayne Grant McConnell } 1581bf1ab978SDwayne Grant McConnell 158286767277SArnd Bergmann static void spufs_object_id_set(void *data, u64 id) 158386767277SArnd Bergmann { 158486767277SArnd Bergmann struct spu_context *ctx = data; 158586767277SArnd Bergmann ctx->object_id = id; 158686767277SArnd Bergmann } 158786767277SArnd Bergmann 158886767277SArnd Bergmann DEFINE_SIMPLE_ATTRIBUTE(spufs_object_id_ops, spufs_object_id_get, 158986767277SArnd Bergmann spufs_object_id_set, "0x%llx\n"); 159086767277SArnd Bergmann 1591bf1ab978SDwayne Grant McConnell static u64 __spufs_lslr_get(void *data) 1592bf1ab978SDwayne Grant McConnell { 1593bf1ab978SDwayne Grant McConnell struct spu_context *ctx = data; 1594bf1ab978SDwayne Grant McConnell return ctx->csa.priv2.spu_lslr_RW; 1595bf1ab978SDwayne Grant McConnell } 1596bf1ab978SDwayne Grant McConnell 1597b9e3bd77SDwayne Grant McConnell static u64 spufs_lslr_get(void *data) 1598b9e3bd77SDwayne Grant McConnell { 1599b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = data; 1600b9e3bd77SDwayne Grant McConnell u64 ret; 1601b9e3bd77SDwayne Grant McConnell 1602b9e3bd77SDwayne Grant McConnell spu_acquire_saved(ctx); 1603bf1ab978SDwayne Grant McConnell ret = __spufs_lslr_get(data); 1604b9e3bd77SDwayne Grant McConnell spu_release(ctx); 1605b9e3bd77SDwayne Grant McConnell 1606b9e3bd77SDwayne Grant McConnell return ret; 1607b9e3bd77SDwayne Grant McConnell } 1608b9e3bd77SDwayne Grant McConnell DEFINE_SIMPLE_ATTRIBUTE(spufs_lslr_ops, spufs_lslr_get, NULL, "0x%llx\n") 1609b9e3bd77SDwayne Grant McConnell 1610b9e3bd77SDwayne Grant McConnell static int spufs_info_open(struct inode *inode, struct file *file) 1611b9e3bd77SDwayne Grant McConnell { 1612b9e3bd77SDwayne Grant McConnell struct spufs_inode_info *i = SPUFS_I(inode); 1613b9e3bd77SDwayne Grant McConnell struct spu_context *ctx = i->i_ctx; 1614b9e3bd77SDwayne Grant McConnell file->private_data = ctx; 1615b9e3bd77SDwayne Grant McConnell return 0; 1616b9e3bd77SDwayne Grant McConnell } 1617b9e3bd77SDwayne Grant McConnell 1618bf1ab978SDwayne Grant McConnell static ssize_t __spufs_mbox_info_read(struct spu_context *ctx, 1619bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1620bf1ab978SDwayne Grant McConnell { 1621bf1ab978SDwayne Grant McConnell u32 mbox_stat; 1622bf1ab978SDwayne Grant McConnell u32 data; 1623bf1ab978SDwayne Grant McConnell 1624bf1ab978SDwayne Grant McConnell mbox_stat = ctx->csa.prob.mb_stat_R; 1625bf1ab978SDwayne Grant McConnell if (mbox_stat & 0x0000ff) { 1626bf1ab978SDwayne Grant McConnell data = ctx->csa.prob.pu_mb_R; 1627bf1ab978SDwayne Grant McConnell } 1628bf1ab978SDwayne Grant McConnell 1629bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1630bf1ab978SDwayne Grant McConnell } 1631bf1ab978SDwayne Grant McConnell 163269a2f00cSDwayne Grant McConnell static ssize_t spufs_mbox_info_read(struct file *file, char __user *buf, 163369a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 163469a2f00cSDwayne Grant McConnell { 1635bf1ab978SDwayne Grant McConnell int ret; 163669a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 163769a2f00cSDwayne Grant McConnell 163869a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 163969a2f00cSDwayne Grant McConnell return -EFAULT; 164069a2f00cSDwayne Grant McConnell 164169a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 164269a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1643bf1ab978SDwayne Grant McConnell ret = __spufs_mbox_info_read(ctx, buf, len, pos); 164469a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 164569a2f00cSDwayne Grant McConnell spu_release(ctx); 164669a2f00cSDwayne Grant McConnell 1647bf1ab978SDwayne Grant McConnell return ret; 164869a2f00cSDwayne Grant McConnell } 164969a2f00cSDwayne Grant McConnell 16505dfe4c96SArjan van de Ven static const struct file_operations spufs_mbox_info_fops = { 165169a2f00cSDwayne Grant McConnell .open = spufs_info_open, 165269a2f00cSDwayne Grant McConnell .read = spufs_mbox_info_read, 165369a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 165469a2f00cSDwayne Grant McConnell }; 165569a2f00cSDwayne Grant McConnell 1656bf1ab978SDwayne Grant McConnell static ssize_t __spufs_ibox_info_read(struct spu_context *ctx, 1657bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1658bf1ab978SDwayne Grant McConnell { 1659bf1ab978SDwayne Grant McConnell u32 ibox_stat; 1660bf1ab978SDwayne Grant McConnell u32 data; 1661bf1ab978SDwayne Grant McConnell 1662bf1ab978SDwayne Grant McConnell ibox_stat = ctx->csa.prob.mb_stat_R; 1663bf1ab978SDwayne Grant McConnell if (ibox_stat & 0xff0000) { 1664bf1ab978SDwayne Grant McConnell data = ctx->csa.priv2.puint_mb_R; 1665bf1ab978SDwayne Grant McConnell } 1666bf1ab978SDwayne Grant McConnell 1667bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, sizeof data); 1668bf1ab978SDwayne Grant McConnell } 1669bf1ab978SDwayne Grant McConnell 167069a2f00cSDwayne Grant McConnell static ssize_t spufs_ibox_info_read(struct file *file, char __user *buf, 167169a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 167269a2f00cSDwayne Grant McConnell { 167369a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1674bf1ab978SDwayne Grant McConnell int ret; 167569a2f00cSDwayne Grant McConnell 167669a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 167769a2f00cSDwayne Grant McConnell return -EFAULT; 167869a2f00cSDwayne Grant McConnell 167969a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 168069a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1681bf1ab978SDwayne Grant McConnell ret = __spufs_ibox_info_read(ctx, buf, len, pos); 168269a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 168369a2f00cSDwayne Grant McConnell spu_release(ctx); 168469a2f00cSDwayne Grant McConnell 1685bf1ab978SDwayne Grant McConnell return ret; 168669a2f00cSDwayne Grant McConnell } 168769a2f00cSDwayne Grant McConnell 16885dfe4c96SArjan van de Ven static const struct file_operations spufs_ibox_info_fops = { 168969a2f00cSDwayne Grant McConnell .open = spufs_info_open, 169069a2f00cSDwayne Grant McConnell .read = spufs_ibox_info_read, 169169a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 169269a2f00cSDwayne Grant McConnell }; 169369a2f00cSDwayne Grant McConnell 1694bf1ab978SDwayne Grant McConnell static ssize_t __spufs_wbox_info_read(struct spu_context *ctx, 1695bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1696bf1ab978SDwayne Grant McConnell { 1697bf1ab978SDwayne Grant McConnell int i, cnt; 1698bf1ab978SDwayne Grant McConnell u32 data[4]; 1699bf1ab978SDwayne Grant McConnell u32 wbox_stat; 1700bf1ab978SDwayne Grant McConnell 1701bf1ab978SDwayne Grant McConnell wbox_stat = ctx->csa.prob.mb_stat_R; 1702bf1ab978SDwayne Grant McConnell cnt = 4 - ((wbox_stat & 0x00ff00) >> 8); 1703bf1ab978SDwayne Grant McConnell for (i = 0; i < cnt; i++) { 1704bf1ab978SDwayne Grant McConnell data[i] = ctx->csa.spu_mailbox_data[i]; 1705bf1ab978SDwayne Grant McConnell } 1706bf1ab978SDwayne Grant McConnell 1707bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &data, 1708bf1ab978SDwayne Grant McConnell cnt * sizeof(u32)); 1709bf1ab978SDwayne Grant McConnell } 1710bf1ab978SDwayne Grant McConnell 171169a2f00cSDwayne Grant McConnell static ssize_t spufs_wbox_info_read(struct file *file, char __user *buf, 171269a2f00cSDwayne Grant McConnell size_t len, loff_t *pos) 171369a2f00cSDwayne Grant McConnell { 171469a2f00cSDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1715bf1ab978SDwayne Grant McConnell int ret; 171669a2f00cSDwayne Grant McConnell 171769a2f00cSDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 171869a2f00cSDwayne Grant McConnell return -EFAULT; 171969a2f00cSDwayne Grant McConnell 172069a2f00cSDwayne Grant McConnell spu_acquire_saved(ctx); 172169a2f00cSDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1722bf1ab978SDwayne Grant McConnell ret = __spufs_wbox_info_read(ctx, buf, len, pos); 172369a2f00cSDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 172469a2f00cSDwayne Grant McConnell spu_release(ctx); 172569a2f00cSDwayne Grant McConnell 1726bf1ab978SDwayne Grant McConnell return ret; 172769a2f00cSDwayne Grant McConnell } 172869a2f00cSDwayne Grant McConnell 17295dfe4c96SArjan van de Ven static const struct file_operations spufs_wbox_info_fops = { 173069a2f00cSDwayne Grant McConnell .open = spufs_info_open, 173169a2f00cSDwayne Grant McConnell .read = spufs_wbox_info_read, 173269a2f00cSDwayne Grant McConnell .llseek = generic_file_llseek, 173369a2f00cSDwayne Grant McConnell }; 173469a2f00cSDwayne Grant McConnell 1735bf1ab978SDwayne Grant McConnell static ssize_t __spufs_dma_info_read(struct spu_context *ctx, 1736bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1737b9e3bd77SDwayne Grant McConnell { 1738b9e3bd77SDwayne Grant McConnell struct spu_dma_info info; 1739b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *spuqp; 1740b9e3bd77SDwayne Grant McConnell int i; 1741b9e3bd77SDwayne Grant McConnell 1742b9e3bd77SDwayne Grant McConnell info.dma_info_type = ctx->csa.priv2.spu_tag_status_query_RW; 1743b9e3bd77SDwayne Grant McConnell info.dma_info_mask = ctx->csa.lscsa->tag_mask.slot[0]; 1744b9e3bd77SDwayne Grant McConnell info.dma_info_status = ctx->csa.spu_chnldata_RW[24]; 1745b9e3bd77SDwayne Grant McConnell info.dma_info_stall_and_notify = ctx->csa.spu_chnldata_RW[25]; 1746b9e3bd77SDwayne Grant McConnell info.dma_info_atomic_command_status = ctx->csa.spu_chnldata_RW[27]; 1747b9e3bd77SDwayne Grant McConnell for (i = 0; i < 16; i++) { 1748b9e3bd77SDwayne Grant McConnell qp = &info.dma_info_command_data[i]; 1749b9e3bd77SDwayne Grant McConnell spuqp = &ctx->csa.priv2.spuq[i]; 1750b9e3bd77SDwayne Grant McConnell 1751b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = spuqp->mfc_cq_data0_RW; 1752b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = spuqp->mfc_cq_data1_RW; 1753b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = spuqp->mfc_cq_data2_RW; 1754b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = spuqp->mfc_cq_data3_RW; 1755b9e3bd77SDwayne Grant McConnell } 1756b9e3bd77SDwayne Grant McConnell 1757b9e3bd77SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 1758b9e3bd77SDwayne Grant McConnell sizeof info); 1759b9e3bd77SDwayne Grant McConnell } 1760b9e3bd77SDwayne Grant McConnell 1761bf1ab978SDwayne Grant McConnell static ssize_t spufs_dma_info_read(struct file *file, char __user *buf, 1762bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 1763bf1ab978SDwayne Grant McConnell { 1764bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1765bf1ab978SDwayne Grant McConnell int ret; 1766bf1ab978SDwayne Grant McConnell 1767bf1ab978SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 1768bf1ab978SDwayne Grant McConnell return -EFAULT; 1769bf1ab978SDwayne Grant McConnell 1770bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1771bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1772bf1ab978SDwayne Grant McConnell ret = __spufs_dma_info_read(ctx, buf, len, pos); 1773bf1ab978SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 1774bf1ab978SDwayne Grant McConnell spu_release(ctx); 1775bf1ab978SDwayne Grant McConnell 1776bf1ab978SDwayne Grant McConnell return ret; 1777bf1ab978SDwayne Grant McConnell } 1778bf1ab978SDwayne Grant McConnell 17795dfe4c96SArjan van de Ven static const struct file_operations spufs_dma_info_fops = { 1780b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 1781b9e3bd77SDwayne Grant McConnell .read = spufs_dma_info_read, 1782b9e3bd77SDwayne Grant McConnell }; 1783b9e3bd77SDwayne Grant McConnell 1784bf1ab978SDwayne Grant McConnell static ssize_t __spufs_proxydma_info_read(struct spu_context *ctx, 1785bf1ab978SDwayne Grant McConnell char __user *buf, size_t len, loff_t *pos) 1786b9e3bd77SDwayne Grant McConnell { 1787b9e3bd77SDwayne Grant McConnell struct spu_proxydma_info info; 1788b9e3bd77SDwayne Grant McConnell struct mfc_cq_sr *qp, *puqp; 1789bf1ab978SDwayne Grant McConnell int ret = sizeof info; 1790b9e3bd77SDwayne Grant McConnell int i; 1791b9e3bd77SDwayne Grant McConnell 1792b9e3bd77SDwayne Grant McConnell if (len < ret) 1793b9e3bd77SDwayne Grant McConnell return -EINVAL; 1794b9e3bd77SDwayne Grant McConnell 1795b9e3bd77SDwayne Grant McConnell if (!access_ok(VERIFY_WRITE, buf, len)) 1796b9e3bd77SDwayne Grant McConnell return -EFAULT; 1797b9e3bd77SDwayne Grant McConnell 1798b9e3bd77SDwayne Grant McConnell info.proxydma_info_type = ctx->csa.prob.dma_querytype_RW; 1799b9e3bd77SDwayne Grant McConnell info.proxydma_info_mask = ctx->csa.prob.dma_querymask_RW; 1800b9e3bd77SDwayne Grant McConnell info.proxydma_info_status = ctx->csa.prob.dma_tagstatus_R; 1801b9e3bd77SDwayne Grant McConnell for (i = 0; i < 8; i++) { 1802b9e3bd77SDwayne Grant McConnell qp = &info.proxydma_info_command_data[i]; 1803b9e3bd77SDwayne Grant McConnell puqp = &ctx->csa.priv2.puq[i]; 1804b9e3bd77SDwayne Grant McConnell 1805b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data0_RW = puqp->mfc_cq_data0_RW; 1806b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data1_RW = puqp->mfc_cq_data1_RW; 1807b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data2_RW = puqp->mfc_cq_data2_RW; 1808b9e3bd77SDwayne Grant McConnell qp->mfc_cq_data3_RW = puqp->mfc_cq_data3_RW; 1809b9e3bd77SDwayne Grant McConnell } 1810bf1ab978SDwayne Grant McConnell 1811bf1ab978SDwayne Grant McConnell return simple_read_from_buffer(buf, len, pos, &info, 1812bf1ab978SDwayne Grant McConnell sizeof info); 1813bf1ab978SDwayne Grant McConnell } 1814bf1ab978SDwayne Grant McConnell 1815bf1ab978SDwayne Grant McConnell static ssize_t spufs_proxydma_info_read(struct file *file, char __user *buf, 1816bf1ab978SDwayne Grant McConnell size_t len, loff_t *pos) 1817bf1ab978SDwayne Grant McConnell { 1818bf1ab978SDwayne Grant McConnell struct spu_context *ctx = file->private_data; 1819bf1ab978SDwayne Grant McConnell int ret; 1820bf1ab978SDwayne Grant McConnell 1821bf1ab978SDwayne Grant McConnell spu_acquire_saved(ctx); 1822bf1ab978SDwayne Grant McConnell spin_lock(&ctx->csa.register_lock); 1823bf1ab978SDwayne Grant McConnell ret = __spufs_proxydma_info_read(ctx, buf, len, pos); 1824b9e3bd77SDwayne Grant McConnell spin_unlock(&ctx->csa.register_lock); 1825b9e3bd77SDwayne Grant McConnell spu_release(ctx); 1826b9e3bd77SDwayne Grant McConnell 1827b9e3bd77SDwayne Grant McConnell return ret; 1828b9e3bd77SDwayne Grant McConnell } 1829b9e3bd77SDwayne Grant McConnell 18305dfe4c96SArjan van de Ven static const struct file_operations spufs_proxydma_info_fops = { 1831b9e3bd77SDwayne Grant McConnell .open = spufs_info_open, 1832b9e3bd77SDwayne Grant McConnell .read = spufs_proxydma_info_read, 1833b9e3bd77SDwayne Grant McConnell }; 1834b9e3bd77SDwayne Grant McConnell 183567207b96SArnd Bergmann struct tree_descr spufs_dir_contents[] = { 183667207b96SArnd Bergmann { "mem", &spufs_mem_fops, 0666, }, 18378b3d6663SArnd Bergmann { "regs", &spufs_regs_fops, 0666, }, 183867207b96SArnd Bergmann { "mbox", &spufs_mbox_fops, 0444, }, 183967207b96SArnd Bergmann { "ibox", &spufs_ibox_fops, 0444, }, 184067207b96SArnd Bergmann { "wbox", &spufs_wbox_fops, 0222, }, 184167207b96SArnd Bergmann { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 184267207b96SArnd Bergmann { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 184367207b96SArnd Bergmann { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 184467207b96SArnd Bergmann { "signal1", &spufs_signal1_fops, 0666, }, 184567207b96SArnd Bergmann { "signal2", &spufs_signal2_fops, 0666, }, 184667207b96SArnd Bergmann { "signal1_type", &spufs_signal1_type, 0666, }, 184767207b96SArnd Bergmann { "signal2_type", &spufs_signal2_type, 0666, }, 18486df10a82SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 18498b3d6663SArnd Bergmann { "fpcr", &spufs_fpcr_fops, 0666, }, 1850b9e3bd77SDwayne Grant McConnell { "lslr", &spufs_lslr_ops, 0444, }, 1851b9e3bd77SDwayne Grant McConnell { "mfc", &spufs_mfc_fops, 0666, }, 1852b9e3bd77SDwayne Grant McConnell { "mss", &spufs_mss_fops, 0666, }, 1853b9e3bd77SDwayne Grant McConnell { "npc", &spufs_npc_ops, 0666, }, 1854b9e3bd77SDwayne Grant McConnell { "srr0", &spufs_srr0_ops, 0666, }, 18558b3d6663SArnd Bergmann { "decr", &spufs_decr_ops, 0666, }, 18568b3d6663SArnd Bergmann { "decr_status", &spufs_decr_status_ops, 0666, }, 18578b3d6663SArnd Bergmann { "event_mask", &spufs_event_mask_ops, 0666, }, 1858b9e3bd77SDwayne Grant McConnell { "event_status", &spufs_event_status_ops, 0444, }, 185927d5bf2aSBenjamin Herrenschmidt { "psmap", &spufs_psmap_fops, 0666, }, 186086767277SArnd Bergmann { "phys-id", &spufs_id_ops, 0666, }, 186186767277SArnd Bergmann { "object-id", &spufs_object_id_ops, 0666, }, 186269a2f00cSDwayne Grant McConnell { "mbox_info", &spufs_mbox_info_fops, 0444, }, 186369a2f00cSDwayne Grant McConnell { "ibox_info", &spufs_ibox_info_fops, 0444, }, 186469a2f00cSDwayne Grant McConnell { "wbox_info", &spufs_wbox_info_fops, 0444, }, 1865b9e3bd77SDwayne Grant McConnell { "dma_info", &spufs_dma_info_fops, 0444, }, 1866b9e3bd77SDwayne Grant McConnell { "proxydma_info", &spufs_proxydma_info_fops, 0444, }, 186767207b96SArnd Bergmann {}, 186867207b96SArnd Bergmann }; 18695737edd1SMark Nutter 18705737edd1SMark Nutter struct tree_descr spufs_dir_nosched_contents[] = { 18715737edd1SMark Nutter { "mem", &spufs_mem_fops, 0666, }, 18725737edd1SMark Nutter { "mbox", &spufs_mbox_fops, 0444, }, 18735737edd1SMark Nutter { "ibox", &spufs_ibox_fops, 0444, }, 18745737edd1SMark Nutter { "wbox", &spufs_wbox_fops, 0222, }, 18755737edd1SMark Nutter { "mbox_stat", &spufs_mbox_stat_fops, 0444, }, 18765737edd1SMark Nutter { "ibox_stat", &spufs_ibox_stat_fops, 0444, }, 18775737edd1SMark Nutter { "wbox_stat", &spufs_wbox_stat_fops, 0444, }, 18785737edd1SMark Nutter { "signal1", &spufs_signal1_fops, 0666, }, 18795737edd1SMark Nutter { "signal2", &spufs_signal2_fops, 0666, }, 18805737edd1SMark Nutter { "signal1_type", &spufs_signal1_type, 0666, }, 18815737edd1SMark Nutter { "signal2_type", &spufs_signal2_type, 0666, }, 18825737edd1SMark Nutter { "mss", &spufs_mss_fops, 0666, }, 18835737edd1SMark Nutter { "mfc", &spufs_mfc_fops, 0666, }, 18845737edd1SMark Nutter { "cntl", &spufs_cntl_fops, 0666, }, 18855737edd1SMark Nutter { "npc", &spufs_npc_ops, 0666, }, 18865737edd1SMark Nutter { "psmap", &spufs_psmap_fops, 0666, }, 18875737edd1SMark Nutter { "phys-id", &spufs_id_ops, 0666, }, 18885737edd1SMark Nutter { "object-id", &spufs_object_id_ops, 0666, }, 18895737edd1SMark Nutter {}, 18905737edd1SMark Nutter }; 1891bf1ab978SDwayne Grant McConnell 1892bf1ab978SDwayne Grant McConnell struct spufs_coredump_reader spufs_coredump_read[] = { 1893bf1ab978SDwayne Grant McConnell { "regs", __spufs_regs_read, NULL, 128 * 16 }, 1894bf1ab978SDwayne Grant McConnell { "fpcr", __spufs_fpcr_read, NULL, 16 }, 1895bf1ab978SDwayne Grant McConnell { "lslr", NULL, __spufs_lslr_get, 11 }, 1896bf1ab978SDwayne Grant McConnell { "decr", NULL, __spufs_decr_get, 11 }, 1897bf1ab978SDwayne Grant McConnell { "decr_status", NULL, __spufs_decr_status_get, 11 }, 1898bf1ab978SDwayne Grant McConnell { "mem", __spufs_mem_read, NULL, 256 * 1024, }, 1899bf1ab978SDwayne Grant McConnell { "signal1", __spufs_signal1_read, NULL, 4 }, 1900bf1ab978SDwayne Grant McConnell { "signal1_type", NULL, __spufs_signal1_type_get, 2 }, 1901bf1ab978SDwayne Grant McConnell { "signal2", __spufs_signal2_read, NULL, 4 }, 1902bf1ab978SDwayne Grant McConnell { "signal2_type", NULL, __spufs_signal2_type_get, 2 }, 1903bf1ab978SDwayne Grant McConnell { "event_mask", NULL, __spufs_event_mask_get, 8 }, 1904bf1ab978SDwayne Grant McConnell { "event_status", NULL, __spufs_event_status_get, 8 }, 1905bf1ab978SDwayne Grant McConnell { "mbox_info", __spufs_mbox_info_read, NULL, 4 }, 1906bf1ab978SDwayne Grant McConnell { "ibox_info", __spufs_ibox_info_read, NULL, 4 }, 1907bf1ab978SDwayne Grant McConnell { "wbox_info", __spufs_wbox_info_read, NULL, 16 }, 1908bf1ab978SDwayne Grant McConnell { "dma_info", __spufs_dma_info_read, NULL, 69 * 8 }, 1909bf1ab978SDwayne Grant McConnell { "proxydma_info", __spufs_proxydma_info_read, NULL, 35 * 8 }, 1910bf1ab978SDwayne Grant McConnell { "object-id", NULL, __spufs_object_id_get, 19 }, 1911bf1ab978SDwayne Grant McConnell { }, 1912bf1ab978SDwayne Grant McConnell }; 1913bf1ab978SDwayne Grant McConnell int spufs_coredump_num_notes = ARRAY_SIZE(spufs_coredump_read) - 1; 1914bf1ab978SDwayne Grant McConnell 1915