include/linux/ssb/ssb_driver_gige.h

   1 #ifndef LINUX_SSB_DRIVER_GIGE_H_
   2 #define LINUX_SSB_DRIVER_GIGE_H_
   3
   4 #include <linux/ssb/ssb.h>
   5 #include <linux/pci.h>
   6 #include <linux/spinlock.h>
   7
   8
   9 #ifdef CONFIG_SSB_DRIVER_GIGE
  10
  11
  12 #define SSB_GIGE_PCIIO                  0x0000 /* PCI I/O Registers (1024 bytes) */
  13 #define SSB_GIGE_RESERVED               0x0400 /* Reserved (1024 bytes) */
  14 #define SSB_GIGE_PCICFG                 0x0800 /* PCI config space (256 bytes) */
  15 #define SSB_GIGE_SHIM_FLUSHSTAT         0x0C00 /* PCI to OCP: Flush status control (32bit) */
  16 #define SSB_GIGE_SHIM_FLUSHRDA          0x0C04 /* PCI to OCP: Flush read address (32bit) */
  17 #define SSB_GIGE_SHIM_FLUSHTO           0x0C08 /* PCI to OCP: Flush timeout counter (32bit) */
  18 #define SSB_GIGE_SHIM_BARRIER           0x0C0C /* PCI to OCP: Barrier register (32bit) */
  19 #define SSB_GIGE_SHIM_MAOCPSI           0x0C10 /* PCI to OCP: MaocpSI Control (32bit) */
  20 #define SSB_GIGE_SHIM_SIOCPMA           0x0C14 /* PCI to OCP: SiocpMa Control (32bit) */
  21
  22 /* TM Status High flags */
  23 #define SSB_GIGE_TMSHIGH_RGMII          0x00010000 /* Have an RGMII PHY-bus */
  24 /* TM Status Low flags */
  25 #define SSB_GIGE_TMSLOW_TXBYPASS        0x00080000 /* TX bypass (no delay) */
  26 #define SSB_GIGE_TMSLOW_RXBYPASS        0x00100000 /* RX bypass (no delay) */
  27 #define SSB_GIGE_TMSLOW_DLLEN           0x01000000 /* Enable DLL controls */
  28
  29 /* Boardflags (low) */
  30 #define SSB_GIGE_BFL_ROBOSWITCH         0x0010
  31
  32
  33 #define SSB_GIGE_MEM_RES_NAME           "SSB Broadcom 47xx GigE memory"
  34 #define SSB_GIGE_IO_RES_NAME            "SSB Broadcom 47xx GigE I/O"
  35
  36 struct ssb_gige {
  37         struct ssb_device *dev;
  38
  39         spinlock_t lock;
  40
  41         /* True, if the device has an RGMII bus.
  42          * False, if the device has a GMII bus. */
  43         bool has_rgmii;
  44
  45         /* The PCI controller device. */
  46         struct pci_controller pci_controller;
  47         struct pci_ops pci_ops;
  48         struct resource mem_resource;
  49         struct resource io_resource;
  50 };
  51
  52 /* Check whether a PCI device is a SSB Gigabit Ethernet core. */
  53 extern bool pdev_is_ssb_gige_core(struct pci_dev *pdev);
  54
  55 /* Convert a pci_dev pointer to a ssb_gige pointer. */
  56 static inline struct ssb_gige * pdev_to_ssb_gige(struct pci_dev *pdev)
  57 {
  58         if (!pdev_is_ssb_gige_core(pdev))
  59                 return NULL;
  60         return container_of(pdev->bus->ops, struct ssb_gige, pci_ops);
  61 }
  62
  63 /* Returns whether the PHY is connected by an RGMII bus. */
  64 static inline bool ssb_gige_is_rgmii(struct pci_dev *pdev)
  65 {
  66         struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
  67         return (dev ? dev->has_rgmii : 0);
  68 }
  69
  70 /* Returns whether we have a Roboswitch. */
  71 static inline bool ssb_gige_have_roboswitch(struct pci_dev *pdev)
  72 {
  73         struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
  74         if (dev)
  75                 return !!(dev->dev->bus->sprom.boardflags_lo &
  76                           SSB_GIGE_BFL_ROBOSWITCH);
  77         return 0;
  78 }
  79
  80 /* Returns whether we can only do one DMA at once. */
  81 static inline bool ssb_gige_one_dma_at_once(struct pci_dev *pdev)
  82 {
  83         struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
  84         if (dev)
  85                 return ((dev->dev->bus->chip_id == 0x4785) &&
  86                         (dev->dev->bus->chip_rev < 2));
  87         return 0;
  88 }
  89
  90 /* Returns whether we must flush posted writes. */
  91 static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev)
  92 {
  93         struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
  94         if (dev)
  95                 return (dev->dev->bus->chip_id == 0x4785);
  96         return 0;
  97 }
  98
  99 #ifdef CONFIG_BCM47XX
 100 #include <asm/mach-bcm47xx/nvram.h>
 101 /* Get the device MAC address */
 102 static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
 103 {
 104         char buf[20];
 105         if (nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0)
 106                 return;
 107         nvram_parse_macaddr(buf, macaddr);
 108 }
 109 #else
 110 static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
 111 {
 112 }
 113 #endif
 114
 115 extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
 116                                           struct pci_dev *pdev);
 117 extern int ssb_gige_map_irq(struct ssb_device *sdev,
 118                             const struct pci_dev *pdev);
 119
 120 /* The GigE driver is not a standalone module, because we don't have support
 121  * for unregistering the driver. So we could not unload the module anyway. */
 122 extern int ssb_gige_init(void);
 123 static inline void ssb_gige_exit(void)
 124 {
 125         /* Currently we can not unregister the GigE driver,
 126          * because we can not unregister the PCI bridge. */
 127         BUG();
 128 }
 129
 130
 131 #else /* CONFIG_SSB_DRIVER_GIGE */
 132 /* Gigabit Ethernet driver disabled */
 133
 134
 135 static inline int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
 136                                                  struct pci_dev *pdev)
 137 {
 138         return -ENOSYS;
 139 }
 140 static inline int ssb_gige_map_irq(struct ssb_device *sdev,
 141                                    const struct pci_dev *pdev)
 142 {
 143         return -ENOSYS;
 144 }
 145 static inline int ssb_gige_init(void)
 146 {
 147         return 0;
 148 }
 149 static inline void ssb_gige_exit(void)
 150 {
 151 }
 152
 153 static inline bool pdev_is_ssb_gige_core(struct pci_dev *pdev)
 154 {
 155         return 0;
 156 }
 157 static inline struct ssb_gige * pdev_to_ssb_gige(struct pci_dev *pdev)
 158 {
 159         return NULL;
 160 }
 161 static inline bool ssb_gige_is_rgmii(struct pci_dev *pdev)
 162 {
 163         return 0;
 164 }
 165 static inline bool ssb_gige_have_roboswitch(struct pci_dev *pdev)
 166 {
 167         return 0;
 168 }
 169 static inline bool ssb_gige_one_dma_at_once(struct pci_dev *pdev)
 170 {
 171         return 0;
 172 }
 173 static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev)
 174 {
 175         return 0;
 176 }
 177
 178 #endif /* CONFIG_SSB_DRIVER_GIGE */
 179 #endif /* LINUX_SSB_DRIVER_GIGE_H_ */