1 files changed, 132 insertions, 71 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index c81341ff75b5..99c73066b82f 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -238,11 +238,13 @@ spufs_mem_write(struct file *file, const char __user *buffer,
         return size;
 }
 
-static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma,
-                                          unsigned long address)
+static int
+spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
         struct spu_context *ctx = vma->vm_file->private_data;
-        unsigned long pfn, offset, addr0 = address;
+        unsigned long address = (unsigned long)vmf->virtual_address;
+        unsigned long pfn, offset;
+
 #ifdef CONFIG_SPU_FS_64K_LS
         struct spu_state *csa = &ctx->csa;
         int psize;
@@ -260,15 +262,15 @@ static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma,
         }
 #endif /* CONFIG_SPU_FS_64K_LS */
 
-        offset = (address - vma->vm_start) + (vma->vm_pgoff << PAGE_SHIFT);
+        offset = vmf->pgoff << PAGE_SHIFT;
         if (offset >= LS_SIZE)
-                return NOPFN_SIGBUS;
+                return VM_FAULT_SIGBUS;
 
-        pr_debug("spufs_mem_mmap_nopfn address=0x%lx -> 0x%lx, offset=0x%lx\n",
-                 addr0, address, offset);
+        pr_debug("spufs_mem_mmap_fault address=0x%lx, offset=0x%lx\n",
+                        address, offset);
 
         if (spu_acquire(ctx))
-                return NOPFN_REFAULT;
+                return VM_FAULT_NOPAGE;
 
         if (ctx->state == SPU_STATE_SAVED) {
                 vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
@@ -283,12 +285,12 @@ static unsigned long spufs_mem_mmap_nopfn(struct vm_area_struct *vma,
 
         spu_release(ctx);
 
-        return NOPFN_REFAULT;
+        return VM_FAULT_NOPAGE;
 }
 
 
 static struct vm_operations_struct spufs_mem_mmap_vmops = {
-        .nopfn = spufs_mem_mmap_nopfn,
+        .fault = spufs_mem_mmap_fault,
 };
 
 static int spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
@@ -351,20 +353,19 @@ static const struct file_operations spufs_mem_fops = {
 #endif
 };
 
-static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
-                                    unsigned long address,
+static int spufs_ps_fault(struct vm_area_struct *vma,
+                                    struct vm_fault *vmf,
                                     unsigned long ps_offs,
                                     unsigned long ps_size)
 {
         struct spu_context *ctx = vma->vm_file->private_data;
-        unsigned long area, offset = address - vma->vm_start;
+        unsigned long area, offset = vmf->pgoff << PAGE_SHIFT;
         int ret = 0;
 
-        spu_context_nospu_trace(spufs_ps_nopfn__enter, ctx);
+        spu_context_nospu_trace(spufs_ps_fault__enter, ctx);
 
-        offset += vma->vm_pgoff << PAGE_SHIFT;
         if (offset >= ps_size)
-                return NOPFN_SIGBUS;
+                return VM_FAULT_SIGBUS;
 
         /*
          * Because we release the mmap_sem, the context may be destroyed while
@@ -378,7 +379,7 @@ static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
          * pages to hand out to the user, but we don't want to wait
          * with the mmap_sem held.
          * It is possible to drop the mmap_sem here, but then we need
-         * to return NOPFN_REFAULT because the mappings may have
+         * to return VM_FAULT_NOPAGE because the mappings may have
          * hanged.
          */
         if (spu_acquire(ctx))
@@ -386,14 +387,15 @@ static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
 
         if (ctx->state == SPU_STATE_SAVED) {
                 up_read(&current->mm->mmap_sem);
-                spu_context_nospu_trace(spufs_ps_nopfn__sleep, ctx);
+                spu_context_nospu_trace(spufs_ps_fault__sleep, ctx);
                 ret = spufs_wait(ctx->run_wq, ctx->state == SPU_STATE_RUNNABLE);
-                spu_context_trace(spufs_ps_nopfn__wake, ctx, ctx->spu);
+                spu_context_trace(spufs_ps_fault__wake, ctx, ctx->spu);
                 down_read(&current->mm->mmap_sem);
         } else {
                 area = ctx->spu->problem_phys + ps_offs;
-                vm_insert_pfn(vma, address, (area + offset) >> PAGE_SHIFT);
-                spu_context_trace(spufs_ps_nopfn__insert, ctx, ctx->spu);
+                vm_insert_pfn(vma, (unsigned long)vmf->virtual_address,
+                                        (area + offset) >> PAGE_SHIFT);
+                spu_context_trace(spufs_ps_fault__insert, ctx, ctx->spu);
         }
 
         if (!ret)
@@ -401,18 +403,18 @@ static unsigned long spufs_ps_nopfn(struct vm_area_struct *vma,
 
 refault:
         put_spu_context(ctx);
-        return NOPFN_REFAULT;
+        return VM_FAULT_NOPAGE;
 }
 
 #if SPUFS_MMAP_4K
-static unsigned long spufs_cntl_mmap_nopfn(struct vm_area_struct *vma,
-                                           unsigned long address)
+static int spufs_cntl_mmap_fault(struct vm_area_struct *vma,
+                                           struct vm_fault *vmf)
 {
-        return spufs_ps_nopfn(vma, address, 0x4000, 0x1000);
+        return spufs_ps_fault(vma, vmf, 0x4000, SPUFS_CNTL_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_cntl_mmap_vmops = {
-        .nopfn = spufs_cntl_mmap_nopfn,
+        .fault = spufs_cntl_mmap_fault,
 };
 
 /*
@@ -1097,23 +1099,23 @@ static ssize_t spufs_signal1_write(struct file *file, const char __user *buf,
         return 4;
 }
 
-static unsigned long spufs_signal1_mmap_nopfn(struct vm_area_struct *vma,
-                                              unsigned long address)
+static int
+spufs_signal1_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-#if PAGE_SIZE == 0x1000
-        return spufs_ps_nopfn(vma, address, 0x14000, 0x1000);
-#elif PAGE_SIZE == 0x10000
+#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
+        return spufs_ps_fault(vma, vmf, 0x14000, SPUFS_SIGNAL_MAP_SIZE);
+#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
         /* For 64k pages, both signal1 and signal2 can be used to mmap the whole
          * signal 1 and 2 area
          */
-        return spufs_ps_nopfn(vma, address, 0x10000, 0x10000);
+        return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
 #else
 #error unsupported page size
 #endif
 }
 
 static struct vm_operations_struct spufs_signal1_mmap_vmops = {
-        .nopfn = spufs_signal1_mmap_nopfn,
+        .fault = spufs_signal1_mmap_fault,
 };
 
 static int spufs_signal1_mmap(struct file *file, struct vm_area_struct *vma)
@@ -1234,23 +1236,23 @@ static ssize_t spufs_signal2_write(struct file *file, const char __user *buf,
 }
 
 #if SPUFS_MMAP_4K
-static unsigned long spufs_signal2_mmap_nopfn(struct vm_area_struct *vma,
-                                              unsigned long address)
+static int
+spufs_signal2_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-#if PAGE_SIZE == 0x1000
-        return spufs_ps_nopfn(vma, address, 0x1c000, 0x1000);
-#elif PAGE_SIZE == 0x10000
+#if SPUFS_SIGNAL_MAP_SIZE == 0x1000
+        return spufs_ps_fault(vma, vmf, 0x1c000, SPUFS_SIGNAL_MAP_SIZE);
+#elif SPUFS_SIGNAL_MAP_SIZE == 0x10000
         /* For 64k pages, both signal1 and signal2 can be used to mmap the whole
          * signal 1 and 2 area
          */
-        return spufs_ps_nopfn(vma, address, 0x10000, 0x10000);
+        return spufs_ps_fault(vma, vmf, 0x10000, SPUFS_SIGNAL_MAP_SIZE);
 #else
 #error unsupported page size
 #endif
 }
 
 static struct vm_operations_struct spufs_signal2_mmap_vmops = {
-        .nopfn = spufs_signal2_mmap_nopfn,
+        .fault = spufs_signal2_mmap_fault,
 };
 
 static int spufs_signal2_mmap(struct file *file, struct vm_area_struct *vma)
@@ -1362,14 +1364,14 @@ DEFINE_SPUFS_ATTRIBUTE(spufs_signal2_type, spufs_signal2_type_get,
                        spufs_signal2_type_set, "%llu\n", SPU_ATTR_ACQUIRE);
 
 #if SPUFS_MMAP_4K
-static unsigned long spufs_mss_mmap_nopfn(struct vm_area_struct *vma,
-                                          unsigned long address)
+static int
+spufs_mss_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-        return spufs_ps_nopfn(vma, address, 0x0000, 0x1000);
+        return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_MSS_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_mss_mmap_vmops = {
-        .nopfn = spufs_mss_mmap_nopfn,
+        .fault = spufs_mss_mmap_fault,
 };
 
 /*
@@ -1424,14 +1426,14 @@ static const struct file_operations spufs_mss_fops = {
         .mmap    = spufs_mss_mmap,
 };
 
-static unsigned long spufs_psmap_mmap_nopfn(struct vm_area_struct *vma,
-                                            unsigned long address)
+static int
+spufs_psmap_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-        return spufs_ps_nopfn(vma, address, 0x0000, 0x20000);
+        return spufs_ps_fault(vma, vmf, 0x0000, SPUFS_PS_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_psmap_mmap_vmops = {
-        .nopfn = spufs_psmap_mmap_nopfn,
+        .fault = spufs_psmap_mmap_fault,
 };
 
 /*
@@ -1484,14 +1486,14 @@ static const struct file_operations spufs_psmap_fops = {
 
 
 #if SPUFS_MMAP_4K
-static unsigned long spufs_mfc_mmap_nopfn(struct vm_area_struct *vma,
-                                          unsigned long address)
+static int
+spufs_mfc_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-        return spufs_ps_nopfn(vma, address, 0x3000, 0x1000);
+        return spufs_ps_fault(vma, vmf, 0x3000, SPUFS_MFC_MAP_SIZE);
 }
 
 static struct vm_operations_struct spufs_mfc_mmap_vmops = {
-        .nopfn = spufs_mfc_mmap_nopfn,
+        .fault = spufs_mfc_mmap_fault,
 };
 
 /*
@@ -2553,22 +2555,74 @@ void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
         wake_up(&ctx->switch_log->wait);
 }
 
-struct tree_descr spufs_dir_contents[] = {
+static int spufs_show_ctx(struct seq_file *s, void *private)
+{
+        struct spu_context *ctx = s->private;
+        u64 mfc_control_RW;
+
+        mutex_lock(&ctx->state_mutex);
+        if (ctx->spu) {
+                struct spu *spu = ctx->spu;
+                struct spu_priv2 __iomem *priv2 = spu->priv2;
+
+                spin_lock_irq(&spu->register_lock);
+                mfc_control_RW = in_be64(&priv2->mfc_control_RW);
+                spin_unlock_irq(&spu->register_lock);
+        } else {
+                struct spu_state *csa = &ctx->csa;
+
+                mfc_control_RW = csa->priv2.mfc_control_RW;
+        }
+
+        seq_printf(s, "%c flgs(%lx) sflgs(%lx) pri(%d) ts(%d) spu(%02d)"
+                " %c %lx %lx %lx %lx %x %x\n",
+                ctx->state == SPU_STATE_SAVED ? 'S' : 'R',
+                ctx->flags,
+                ctx->sched_flags,
+                ctx->prio,
+                ctx->time_slice,
+                ctx->spu ? ctx->spu->number : -1,
+                !list_empty(&ctx->rq) ? 'q' : ' ',
+                ctx->csa.class_0_pending,
+                ctx->csa.class_0_dar,
+                ctx->csa.class_1_dsisr,
+                mfc_control_RW,
+                ctx->ops->runcntl_read(ctx),
+                ctx->ops->status_read(ctx));
+
+        mutex_unlock(&ctx->state_mutex);
+
+        return 0;
+}
+
+static int spufs_ctx_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, spufs_show_ctx, SPUFS_I(inode)->i_ctx);
+}
+
+static const struct file_operations spufs_ctx_fops = {
+        .open           = spufs_ctx_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
+struct spufs_tree_descr spufs_dir_contents[] = {
         { "capabilities", &spufs_caps_fops, 0444, },
-        { "mem",  &spufs_mem_fops,  0666, },
-        { "regs", &spufs_regs_fops,  0666, },
+        { "mem",  &spufs_mem_fops,  0666, LS_SIZE, },
+        { "regs", &spufs_regs_fops,  0666, sizeof(struct spu_reg128[128]), },
         { "mbox", &spufs_mbox_fops, 0444, },
         { "ibox", &spufs_ibox_fops, 0444, },
         { "wbox", &spufs_wbox_fops, 0222, },
-        { "mbox_stat", &spufs_mbox_stat_fops, 0444, },
-        { "ibox_stat", &spufs_ibox_stat_fops, 0444, },
-        { "wbox_stat", &spufs_wbox_stat_fops, 0444, },
+        { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
+        { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
+        { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
         { "signal1", &spufs_signal1_fops, 0666, },
         { "signal2", &spufs_signal2_fops, 0666, },
         { "signal1_type", &spufs_signal1_type, 0666, },
         { "signal2_type", &spufs_signal2_type, 0666, },
         { "cntl", &spufs_cntl_fops,  0666, },
-        { "fpcr", &spufs_fpcr_fops, 0666, },
+        { "fpcr", &spufs_fpcr_fops, 0666, sizeof(struct spu_reg128), },
         { "lslr", &spufs_lslr_ops, 0444, },
         { "mfc", &spufs_mfc_fops, 0666, },
         { "mss", &spufs_mss_fops, 0666, },
@@ -2578,29 +2632,31 @@ struct tree_descr spufs_dir_contents[] = {
         { "decr_status", &spufs_decr_status_ops, 0666, },
         { "event_mask", &spufs_event_mask_ops, 0666, },
         { "event_status", &spufs_event_status_ops, 0444, },
-        { "psmap", &spufs_psmap_fops, 0666, },
+        { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
         { "phys-id", &spufs_id_ops, 0666, },
         { "object-id", &spufs_object_id_ops, 0666, },
-        { "mbox_info", &spufs_mbox_info_fops, 0444, },
-        { "ibox_info", &spufs_ibox_info_fops, 0444, },
-        { "wbox_info", &spufs_wbox_info_fops, 0444, },
-        { "dma_info", &spufs_dma_info_fops, 0444, },
-        { "proxydma_info", &spufs_proxydma_info_fops, 0444, },
+        { "mbox_info", &spufs_mbox_info_fops, 0444, sizeof(u32), },
+        { "ibox_info", &spufs_ibox_info_fops, 0444, sizeof(u32), },
+        { "wbox_info", &spufs_wbox_info_fops, 0444, sizeof(u32), },
+        { "dma_info", &spufs_dma_info_fops, 0444,
+                sizeof(struct spu_dma_info), },
+        { "proxydma_info", &spufs_proxydma_info_fops, 0444,
+                sizeof(struct spu_proxydma_info)},
         { "tid", &spufs_tid_fops, 0444, },
         { "stat", &spufs_stat_fops, 0444, },
         { "switch_log", &spufs_switch_log_fops, 0444 },
         {},
 };
 
-struct tree_descr spufs_dir_nosched_contents[] = {
+struct spufs_tree_descr spufs_dir_nosched_contents[] = {
         { "capabilities", &spufs_caps_fops, 0444, },
-        { "mem",  &spufs_mem_fops,  0666, },
+        { "mem",  &spufs_mem_fops,  0666, LS_SIZE, },
         { "mbox", &spufs_mbox_fops, 0444, },
         { "ibox", &spufs_ibox_fops, 0444, },
         { "wbox", &spufs_wbox_fops, 0222, },
-        { "mbox_stat", &spufs_mbox_stat_fops, 0444, },
-        { "ibox_stat", &spufs_ibox_stat_fops, 0444, },
-        { "wbox_stat", &spufs_wbox_stat_fops, 0444, },
+        { "mbox_stat", &spufs_mbox_stat_fops, 0444, sizeof(u32), },
+        { "ibox_stat", &spufs_ibox_stat_fops, 0444, sizeof(u32), },
+        { "wbox_stat", &spufs_wbox_stat_fops, 0444, sizeof(u32), },
         { "signal1", &spufs_signal1_nosched_fops, 0222, },
         { "signal2", &spufs_signal2_nosched_fops, 0222, },
         { "signal1_type", &spufs_signal1_type, 0666, },
@@ -2609,7 +2665,7 @@ struct tree_descr spufs_dir_nosched_contents[] = {
         { "mfc", &spufs_mfc_fops, 0666, },
         { "cntl", &spufs_cntl_fops,  0666, },
         { "npc", &spufs_npc_ops, 0666, },
-        { "psmap", &spufs_psmap_fops, 0666, },
+        { "psmap", &spufs_psmap_fops, 0666, SPUFS_PS_MAP_SIZE, },
         { "phys-id", &spufs_id_ops, 0666, },
         { "object-id", &spufs_object_id_ops, 0666, },
         { "tid", &spufs_tid_fops, 0444, },
@@ -2617,6 +2673,11 @@ struct tree_descr spufs_dir_nosched_contents[] = {
         {},
 };
 
+struct spufs_tree_descr spufs_dir_debug_contents[] = {
+        { ".ctx", &spufs_ctx_fops, 0444, },
+        {},
+};
+
 struct spufs_coredump_reader spufs_coredump_read[] = {
         { "regs", __spufs_regs_read, NULL, sizeof(struct spu_reg128[128])},
         { "fpcr", __spufs_fpcr_read, NULL, sizeof(struct spu_reg128) },