[POWERPC] spufs: Fix bitrot of the SPU mmap facility

[linux-drm-fsl-dcu.git] / arch / powerpc / platforms / cell / spufs / spufs.h

diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index 4485738e2102d152899e44ad87a8ee683700abaa..0941c56df9b532821c69dbdc18fee82af4965c94 100644 (file)
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -29,6 +29,7 @@
 
 #include <asm/spu.h>
 #include <asm/spu_csa.h>
+#include <asm/spu_info.h>
 
 /* The magic number for our file system */
 enum {
@@ -39,6 +40,8 @@ struct spu_context_ops;
 
 #define SPU_CONTEXT_PREEMPT          0UL
 
+struct spu_gang;
+
 struct spu_context {
        struct spu *spu;                  /* pointer to a physical SPU */
        struct spu_state csa;             /* SPU context save area. */
@@ -48,6 +51,9 @@ struct spu_context {
        struct address_space *cntl;        /* 'control' area mappings. */
        struct address_space *signal1;     /* 'signal1' area mappings. */
        struct address_space *signal2;     /* 'signal2' area mappings. */
+       struct address_space *mss;         /* 'mss' area mappings. */
+       struct address_space *psmap;       /* 'psmap' area mappings. */
+       u64 object_id;             /* user space pointer for oprofile */
 
        enum { SPU_STATE_RUNNABLE, SPU_STATE_SAVED } state;
        struct rw_semaphore state_sema;
@@ -66,7 +72,18 @@ struct spu_context {
        u32 tagwait;
        struct spu_context_ops *ops;
        struct work_struct reap_work;
-       u64 flags;
+       unsigned long flags;
+       unsigned long event_return;
+
+       struct list_head gang_list;
+       struct spu_gang *gang;
+};
+
+struct spu_gang {
+       struct list_head list;
+       struct mutex mutex;
+       struct kref kref;
+       int contexts;
 };
 
 struct mfc_dma_command {
@@ -100,13 +117,19 @@ struct spu_context_ops {
        void (*npc_write) (struct spu_context * ctx, u32 data);
         u32(*status_read) (struct spu_context * ctx);
        char*(*get_ls) (struct spu_context * ctx);
+        u32 (*runcntl_read) (struct spu_context * ctx);
        void (*runcntl_write) (struct spu_context * ctx, u32 data);
-       void (*runcntl_stop) (struct spu_context * ctx);
+       void (*master_start) (struct spu_context * ctx);
+       void (*master_stop) (struct spu_context * ctx);
        int (*set_mfc_query)(struct spu_context * ctx, u32 mask, u32 mode);
        u32 (*read_mfc_tagstatus)(struct spu_context * ctx);
        u32 (*get_mfc_free_elements)(struct spu_context *ctx);
-       int (*send_mfc_command)(struct spu_context *ctx,
-                                       struct mfc_dma_command *cmd);
+       int (*send_mfc_command)(struct spu_context * ctx,
+                               struct mfc_dma_command * cmd);
+       void (*dma_info_read) (struct spu_context * ctx,
+                              struct spu_dma_info * info);
+       void (*proxydma_info_read) (struct spu_context * ctx,
+                                   struct spu_proxydma_info * info);
 };
 
 extern struct spu_context_ops spu_hw_ops;
@@ -114,22 +137,31 @@ extern struct spu_context_ops spu_backing_ops;
 
 struct spufs_inode_info {
        struct spu_context *i_ctx;
+       struct spu_gang *i_gang;
        struct inode vfs_inode;
 };
 #define SPUFS_I(inode) \
        container_of(inode, struct spufs_inode_info, vfs_inode)
 
 extern struct tree_descr spufs_dir_contents[];
+extern struct tree_descr spufs_dir_nosched_contents[];
 
 /* system call implementation */
 long spufs_run_spu(struct file *file,
                   struct spu_context *ctx, u32 *npc, u32 *status);
-long spufs_create_thread(struct nameidata *nd,
+long spufs_create(struct nameidata *nd,
                         unsigned int flags, mode_t mode);
-extern struct file_operations spufs_context_fops;
+extern const struct file_operations spufs_context_fops;
+
+/* gang management */
+struct spu_gang *alloc_spu_gang(void);
+struct spu_gang *get_spu_gang(struct spu_gang *gang);
+int put_spu_gang(struct spu_gang *gang);
+void spu_gang_remove_ctx(struct spu_gang *gang, struct spu_context *ctx);
+void spu_gang_add_ctx(struct spu_gang *gang, struct spu_context *ctx);
 
 /* context management */
-struct spu_context * alloc_spu_context(void);
+struct spu_context * alloc_spu_context(struct spu_gang *gang);
 void destroy_spu_context(struct kref *kref);
 struct spu_context * get_spu_context(struct spu_context *ctx);
 int put_spu_context(struct spu_context *ctx);
@@ -140,6 +172,12 @@ void spu_acquire(struct spu_context *ctx);
 void spu_release(struct spu_context *ctx);
 int spu_acquire_runnable(struct spu_context *ctx);
 void spu_acquire_saved(struct spu_context *ctx);
+int spu_acquire_exclusive(struct spu_context *ctx);
+
+static inline void spu_release_exclusive(struct spu_context *ctx)
+{
+       up_write(&ctx->state_sema);
+}
 
 int spu_activate(struct spu_context *ctx, u64 flags);
 void spu_deactivate(struct spu_context *ctx);
@@ -147,6 +185,8 @@ void spu_yield(struct spu_context *ctx);
 int __init spu_sched_init(void);
 void __exit spu_sched_exit(void);
 
+extern char *isolated_loader;
+
 /*
  * spufs_wait
  *     Same as wait_event_interruptible(), except that here
@@ -183,5 +223,17 @@ void spufs_ibox_callback(struct spu *spu);
 void spufs_wbox_callback(struct spu *spu);
 void spufs_stop_callback(struct spu *spu);
 void spufs_mfc_callback(struct spu *spu);
+void spufs_dma_callback(struct spu *spu, int type);
+
+extern struct spu_coredump_calls spufs_coredump_calls;
+struct spufs_coredump_reader {
+       char *name;
+       ssize_t (*read)(struct spu_context *ctx,
+                       char __user *buffer, size_t size, loff_t *pos);
+       u64 (*get)(void *data);
+       size_t size;
+};
+extern struct spufs_coredump_reader spufs_coredump_read[];
+extern int spufs_coredump_num_notes;
 
 #endif