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