1 files changed, 72 insertions, 12 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index fefb4e19bf6a..5faa8310eec9 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -132,9 +132,10 @@ static inline const char *pci_power_name(pci_power_t state)
         return pci_power_names[1 + (int) state];
 }
 
-#define PCI_PM_D2_DELAY 200
-#define PCI_PM_D3_WAIT  10
-#define PCI_PM_BUS_WAIT 50
+#define PCI_PM_D2_DELAY         200
+#define PCI_PM_D3_WAIT          10
+#define PCI_PM_D3COLD_WAIT      100
+#define PCI_PM_BUS_WAIT         50
 
 /** The pci_channel state describes connectivity between the CPU and
  *  the pci device.  If some PCI bus between here and the pci device
@@ -176,8 +177,6 @@ enum pci_dev_flags {
         PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
         /* Provide indication device is assigned by a Virtual Machine Manager */
         PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4,
-        /* Device causes system crash if in D3 during S3 sleep */
-        PCI_DEV_FLAGS_NO_D3_DURING_SLEEP = (__force pci_dev_flags_t) 8,
 };
 
 enum pci_irq_reroute_variant {
@@ -280,11 +279,18 @@ struct pci_dev {
         unsigned int    pme_poll:1;     /* Poll device's PME status bit */
         unsigned int    d1_support:1;   /* Low power state D1 is supported */
         unsigned int    d2_support:1;   /* Low power state D2 is supported */
-        unsigned int    no_d1d2:1;      /* Only allow D0 and D3 */
+        unsigned int    no_d1d2:1;      /* D1 and D2 are forbidden */
+        unsigned int    no_d3cold:1;    /* D3cold is forbidden */
+        unsigned int    d3cold_allowed:1;       /* D3cold is allowed by user */
         unsigned int    mmio_always_on:1;       /* disallow turning off io/mem
                                                    decoding during bar sizing */
         unsigned int    wakeup_prepared:1;
+        unsigned int    runtime_d3cold:1;       /* whether go through runtime
+                                                   D3cold, not set for devices
+                                                   powered on/off by the
+                                                   corresponding bridge */
         unsigned int    d3_delay;       /* D3->D0 transition time in ms */
+        unsigned int    d3cold_delay;   /* D3cold->D0 transition time in ms */
 
 #ifdef CONFIG_PCIEASPM
         struct pcie_link_state  *link_state;    /* ASPM link state. */
@@ -326,6 +332,8 @@ struct pci_dev {
         unsigned int    is_hotplug_bridge:1;
         unsigned int    __aer_firmware_first_valid:1;
         unsigned int    __aer_firmware_first:1;
+        unsigned int    broken_intx_masking:1;
+        unsigned int    io_window_1k:1; /* Intel P2P bridge 1K I/O windows */
         pci_dev_flags_t dev_flags;
         atomic_t        enable_cnt;     /* pci_enable_device has been called */
 
@@ -370,6 +378,8 @@ static inline int pci_channel_offline(struct pci_dev *pdev)
         return (pdev->error_state != pci_channel_io_normal);
 }
 
+extern struct resource busn_resource;
+
 struct pci_host_bridge_window {
         struct list_head list;
         struct resource *res;           /* host bridge aperture (CPU address) */
@@ -421,6 +431,7 @@ struct pci_bus {
         struct list_head slots;         /* list of slots on this bus */
         struct resource *resource[PCI_BRIDGE_RESOURCE_NUM];
         struct list_head resources;     /* address space routed to this bus */
+        struct resource busn_res;       /* bus numbers routed to this bus */
 
         struct pci_ops  *ops;           /* configuration access functions */
         void            *sysdata;       /* hook for sys-specific extension */
@@ -428,8 +439,6 @@ struct pci_bus {
 
         unsigned char   number;         /* bus number */
         unsigned char   primary;        /* number of primary bridge */
-        unsigned char   secondary;      /* number of secondary bridge */
-        unsigned char   subordinate;    /* max number of subordinate buses */
         unsigned char   max_bus_speed;  /* enum pci_bus_speed */
         unsigned char   cur_bus_speed;  /* enum pci_bus_speed */
 
@@ -476,6 +485,32 @@ static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false;
 #define PCIBIOS_SET_FAILED              0x88
 #define PCIBIOS_BUFFER_TOO_SMALL        0x89
 
+/*
+ * Translate above to generic errno for passing back through non-pci.
+ */
+static inline int pcibios_err_to_errno(int err)
+{
+        if (err <= PCIBIOS_SUCCESSFUL)
+                return err; /* Assume already errno */
+
+        switch (err) {
+        case PCIBIOS_FUNC_NOT_SUPPORTED:
+                return -ENOENT;
+        case PCIBIOS_BAD_VENDOR_ID:
+                return -EINVAL;
+        case PCIBIOS_DEVICE_NOT_FOUND:
+                return -ENODEV;
+        case PCIBIOS_BAD_REGISTER_NUMBER:
+                return -EFAULT;
+        case PCIBIOS_SET_FAILED:
+                return -EIO;
+        case PCIBIOS_BUFFER_TOO_SMALL:
+                return -ENOSPC;
+        }
+
+        return -ENOTTY;
+}
+
 /* Low-level architecture-dependent routines */
 
 struct pci_ops {
@@ -644,6 +679,7 @@ extern int no_pci_devices(void);
 
 void pcibios_fixup_bus(struct pci_bus *);
 int __must_check pcibios_enable_device(struct pci_dev *, int mask);
+/* Architecture specific versions may override this (weak) */
 char *pcibios_setup(char *str);
 
 /* Used only when drivers/pci/setup.c is used */
@@ -670,6 +706,9 @@ struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
 struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
                                     struct pci_ops *ops, void *sysdata,
                                     struct list_head *resources);
+int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);
+int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax);
+void pci_bus_release_busn_res(struct pci_bus *b);
 struct pci_bus * __devinit pci_scan_root_bus(struct device *parent, int bus,
                                              struct pci_ops *ops, void *sysdata,
                                              struct list_head *resources);
@@ -716,8 +755,6 @@ enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
 int pci_find_capability(struct pci_dev *dev, int cap);
 int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
 int pci_find_ext_capability(struct pci_dev *dev, int cap);
-int pci_bus_find_ext_capability(struct pci_bus *bus, unsigned int devfn,
-                                int cap);
 int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
 int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
 struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
@@ -779,6 +816,14 @@ static inline int pci_write_config_dword(const struct pci_dev *dev, int where,
         return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
 }
 
+/* user-space driven config access */
+int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
+int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
+int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
+int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
+int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
+int pci_user_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_io(struct pci_dev *dev);
 int __must_check pci_enable_device_mem(struct pci_dev *dev);
@@ -877,7 +922,6 @@ enum pci_obff_signal_type {
 int pci_enable_obff(struct pci_dev *dev, enum pci_obff_signal_type);
 void pci_disable_obff(struct pci_dev *dev);
 
-bool pci_ltr_supported(struct pci_dev *dev);
 int pci_enable_ltr(struct pci_dev *dev);
 void pci_disable_ltr(struct pci_dev *dev);
 int pci_set_ltr(struct pci_dev *dev, int snoop_lat_ns, int nosnoop_lat_ns);
@@ -1334,6 +1378,9 @@ static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
 static inline int pci_domain_nr(struct pci_bus *bus)
 { return 0; }
 
+static inline struct pci_dev *pci_dev_get(struct pci_dev *dev)
+{ return NULL; }
+
 #define dev_is_pci(d) (false)
 #define dev_is_pf(d) (false)
 #define dev_num_vf(d) (0)
@@ -1488,9 +1535,20 @@ enum pci_fixup_pass {
 
 #ifdef CONFIG_PCI_QUIRKS
 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
+struct pci_dev *pci_get_dma_source(struct pci_dev *dev);
+int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
 #else
 static inline void pci_fixup_device(enum pci_fixup_pass pass,
                                     struct pci_dev *dev) {}
+static inline struct pci_dev *pci_get_dma_source(struct pci_dev *dev)
+{
+        return pci_dev_get(dev);
+}
+static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
+                                               u16 acs_flags)
+{
+        return -ENOTTY;
+}
 #endif
 
 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
@@ -1593,7 +1651,9 @@ static inline bool pci_is_pcie(struct pci_dev *dev)
 }
 
 void pci_request_acs(void);
-
+bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags);
+bool pci_acs_path_enabled(struct pci_dev *start,
+                          struct pci_dev *end, u16 acs_flags);
 
 #define PCI_VPD_LRDT                    0x80    /* Large Resource Data Type */
 #define PCI_VPD_LRDT_ID(x)              (x | PCI_VPD_LRDT)