7 files changed, 125 insertions, 1 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 5ca1cdba563a..26e4692f2d1a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -354,6 +354,41 @@ extern int __must_check device_create_bin_file(struct device *dev,
                                                struct bin_attribute *attr);
 extern void device_remove_bin_file(struct device *dev,
                                    struct bin_attribute *attr);
+
+/* device resource management */
+typedef void (*dr_release_t)(struct device *dev, void *res);
+typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data);
+
+#ifdef CONFIG_DEBUG_DEVRES
+extern void * __devres_alloc(dr_release_t release, size_t size, gfp_t gfp,
+                             const char *name);
+#define devres_alloc(release, size, gfp) \
+        __devres_alloc(release, size, gfp, #release)
+#else
+extern void * devres_alloc(dr_release_t release, size_t size, gfp_t gfp);
+#endif
+extern void devres_free(void *res);
+extern void devres_add(struct device *dev, void *res);
+extern void * devres_find(struct device *dev, dr_release_t release,
+                          dr_match_t match, void *match_data);
+extern void * devres_get(struct device *dev, void *new_res,
+                         dr_match_t match, void *match_data);
+extern void * devres_remove(struct device *dev, dr_release_t release,
+                            dr_match_t match, void *match_data);
+extern int devres_destroy(struct device *dev, dr_release_t release,
+                          dr_match_t match, void *match_data);
+
+/* devres group */
+extern void * __must_check devres_open_group(struct device *dev, void *id,
+                                             gfp_t gfp);
+extern void devres_close_group(struct device *dev, void *id);
+extern void devres_remove_group(struct device *dev, void *id);
+extern int devres_release_group(struct device *dev, void *id);
+
+/* managed kzalloc/kfree for device drivers, no kmalloc, always use kzalloc */
+extern void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp);
+extern void devm_kfree(struct device *dev, void *p);
+
 struct device {
         struct klist            klist_children;
         struct klist_node       knode_parent;           /* node in sibling list */
@@ -397,6 +432,9 @@ struct device {
         /* arch specific additions */
         struct dev_archdata     archdata;
 
+        spinlock_t              devres_lock;
+        struct list_head        devres_head;
+
         /* class_device migration path */
         struct list_head        node;
         struct class            *class;
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index ff203c465fed..9a663c6db16a 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -66,6 +66,33 @@ dma_mark_declared_memory_occupied(struct device *dev,
 }
 #endif
 
-#endif
+/*
+ * Managed DMA API
+ */
+extern void *dmam_alloc_coherent(struct device *dev, size_t size,
+                                 dma_addr_t *dma_handle, gfp_t gfp);
+extern void dmam_free_coherent(struct device *dev, size_t size, void *vaddr,
+                               dma_addr_t dma_handle);
+extern void *dmam_alloc_noncoherent(struct device *dev, size_t size,
+                                    dma_addr_t *dma_handle, gfp_t gfp);
+extern void dmam_free_noncoherent(struct device *dev, size_t size, void *vaddr,
+                                  dma_addr_t dma_handle);
+#ifdef ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
+extern int dmam_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
+                                        dma_addr_t device_addr, size_t size,
+                                        int flags);
+extern void dmam_release_declared_memory(struct device *dev);
+#else /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */
+static inline int dmam_declare_coherent_memory(struct device *dev,
+                                dma_addr_t bus_addr, dma_addr_t device_addr,
+                                size_t size, gfp_t gfp)
+{
+        return 0;
+}
 
+static inline void dmam_release_declared_memory(struct device *dev)
+{
+}
+#endif /* ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY */
 
+#endif
diff --git a/include/linux/dmapool.h b/include/linux/dmapool.h
index 76f12f46db7f..022e34fcbd1b 100644
--- a/include/linux/dmapool.h
+++ b/include/linux/dmapool.h
@@ -24,5 +24,12 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
 
 void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t addr);
 
+/*
+ * Managed DMA pool
+ */
+struct dma_pool *dmam_pool_create(const char *name, struct device *dev,
+                                  size_t size, size_t align, size_t allocation);
+void dmam_pool_destroy(struct dma_pool *pool);
+
 #endif
 
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index e36e86c869fb..5a8ba0b8ccba 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -12,6 +12,7 @@
 #include <linux/sched.h>
 #include <linux/irqflags.h>
 #include <linux/bottom_half.h>
+#include <linux/device.h>
 #include <asm/atomic.h>
 #include <asm/ptrace.h>
 #include <asm/system.h>
@@ -83,6 +84,11 @@ extern int request_irq(unsigned int, irq_handler_t handler,
                        unsigned long, const char *, void *);
 extern void free_irq(unsigned int, void *);
 
+extern int devm_request_irq(struct device *dev, unsigned int irq,
+                            irq_handler_t handler, unsigned long irqflags,
+                            const char *devname, void *dev_id);
+extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
+
 /*
  * On lockdep we dont want to enable hardirqs in hardirq
  * context. Use local_irq_enable_in_hardirq() to annotate
diff --git a/include/linux/io.h b/include/linux/io.h
index 81877ea39309..f5edf9c5de0a 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -28,6 +28,23 @@ void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
 int ioremap_page_range(unsigned long addr, unsigned long end,
                        unsigned long phys_addr, pgprot_t prot);
 
+/*
+ * Managed iomap interface
+ */
+void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
+                               unsigned int nr);
+void devm_ioport_unmap(struct device *dev, void __iomem *addr);
+
+void __iomem * devm_ioremap(struct device *dev, unsigned long offset,
+                            unsigned long size);
+void __iomem * devm_ioremap_nocache(struct device *dev, unsigned long offset,
+                                    unsigned long size);
+void devm_iounmap(struct device *dev, void __iomem *addr);
+
+void __iomem * pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
+void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
+void __iomem * const * pcim_iomap_table(struct pci_dev *pdev);
+
 /**
  *      check_signature         -       find BIOS signatures
  *      @io_addr: mmio address to check
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 15228d79c5bc..6859a3b14088 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -137,4 +137,24 @@ static inline int __deprecated check_region(resource_size_t s,
 {
         return __check_region(&ioport_resource, s, n);
 }
+
+/* Wrappers for managed devices */
+struct device;
+#define devm_request_region(dev,start,n,name) \
+        __devm_request_region(dev, &ioport_resource, (start), (n), (name))
+#define devm_request_mem_region(dev,start,n,name) \
+        __devm_request_region(dev, &iomem_resource, (start), (n), (name))
+
+extern struct resource * __devm_request_region(struct device *dev,
+                                struct resource *parent, resource_size_t start,
+                                resource_size_t n, const char *name);
+
+#define devm_release_region(start,n) \
+        __devm_release_region(dev, &ioport_resource, (start), (n))
+#define devm_release_mem_region(start,n) \
+        __devm_release_region(dev, &iomem_resource, (start), (n))
+
+extern void __devm_release_region(struct device *dev, struct resource *parent,
+                                  resource_size_t start, resource_size_t n);
+
 #endif  /* _LINUX_IOPORT_H */
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 805412cc6875..9e3042e7e1cc 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -167,6 +167,7 @@ struct pci_dev {
         unsigned int    broken_parity_status:1; /* Device generates false positive parity */
         unsigned int    msi_enabled:1;
         unsigned int    msix_enabled:1;
+        unsigned int    is_managed:1;
         atomic_t        enable_cnt;     /* pci_enable_device has been called */
 
         u32             saved_config_space[16]; /* config space saved at suspend time */
@@ -528,6 +529,14 @@ static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val
 
 int __must_check pci_enable_device(struct pci_dev *dev);
 int __must_check pci_enable_device_bars(struct pci_dev *dev, int mask);
+int __must_check pcim_enable_device(struct pci_dev *pdev);
+void pcim_pin_device(struct pci_dev *pdev);
+
+static inline int pci_is_managed(struct pci_dev *pdev)
+{
+        return pdev->is_managed;
+}
+
 void pci_disable_device(struct pci_dev *dev);
 void pci_set_master(struct pci_dev *dev);
 #define HAVE_PCI_SET_MWI