name : ssb_driver_gige.h /* SPDX-License-Identifier: GPL-2.0 */ #ifndef LINUX_SSB_DRIVER_GIGE_H_ #define LINUX_SSB_DRIVER_GIGE_H_ #include <linux/ssb/ssb.h> #include <linux/bug.h> #include <linux/pci.h> #include <linux/spinlock.h> #ifdef CONFIG_SSB_DRIVER_GIGE #define SSB_GIGE_PCIIO 0x0000 /* PCI I/O Registers (1024 bytes) */ #define SSB_GIGE_RESERVED 0x0400 /* Reserved (1024 bytes) */ #define SSB_GIGE_PCICFG 0x0800 /* PCI config space (256 bytes) */ #define SSB_GIGE_SHIM_FLUSHSTAT 0x0C00 /* PCI to OCP: Flush status control (32bit) */ #define SSB_GIGE_SHIM_FLUSHRDA 0x0C04 /* PCI to OCP: Flush read address (32bit) */ #define SSB_GIGE_SHIM_FLUSHTO 0x0C08 /* PCI to OCP: Flush timeout counter (32bit) */ #define SSB_GIGE_SHIM_BARRIER 0x0C0C /* PCI to OCP: Barrier register (32bit) */ #define SSB_GIGE_SHIM_MAOCPSI 0x0C10 /* PCI to OCP: MaocpSI Control (32bit) */ #define SSB_GIGE_SHIM_SIOCPMA 0x0C14 /* PCI to OCP: SiocpMa Control (32bit) */ /* TM Status High flags */ #define SSB_GIGE_TMSHIGH_RGMII 0x00010000 /* Have an RGMII PHY-bus */ /* TM Status Low flags */ #define SSB_GIGE_TMSLOW_TXBYPASS 0x00080000 /* TX bypass (no delay) */ #define SSB_GIGE_TMSLOW_RXBYPASS 0x00100000 /* RX bypass (no delay) */ #define SSB_GIGE_TMSLOW_DLLEN 0x01000000 /* Enable DLL controls */ /* Boardflags (low) */ #define SSB_GIGE_BFL_ROBOSWITCH 0x0010 #define SSB_GIGE_MEM_RES_NAME "SSB Broadcom 47xx GigE memory" #define SSB_GIGE_IO_RES_NAME "SSB Broadcom 47xx GigE I/O" struct ssb_gige { struct ssb_device *dev; spinlock_t lock; /* True, if the device has an RGMII bus. * False, if the device has a GMII bus. */ bool has_rgmii; /* The PCI controller device. */ struct pci_controller pci_controller; struct pci_ops pci_ops; struct resource mem_resource; struct resource io_resource; }; /* Check whether a PCI device is a SSB Gigabit Ethernet core. */ extern bool pdev_is_ssb_gige_core(struct pci_dev *pdev); /* Convert a pci_dev pointer to a ssb_gige pointer. */ static inline struct ssb_gige * pdev_to_ssb_gige(struct pci_dev *pdev) { if (!pdev_is_ssb_gige_core(pdev)) return NULL; return container_of(pdev->bus->ops, struct ssb_gige, pci_ops); } /* Returns whether the PHY is connected by an RGMII bus. */ static inline bool ssb_gige_is_rgmii(struct pci_dev *pdev) { struct ssb_gige *dev = pdev_to_ssb_gige(pdev); return (dev ? dev->has_rgmii : 0); } /* Returns whether we have a Roboswitch. */ static inline bool ssb_gige_have_roboswitch(struct pci_dev *pdev) { struct ssb_gige *dev = pdev_to_ssb_gige(pdev); if (dev) return !!(dev->dev->bus->sprom.boardflags_lo & SSB_GIGE_BFL_ROBOSWITCH); return false; } /* Returns whether we can only do one DMA at once. */ static inline bool ssb_gige_one_dma_at_once(struct pci_dev *pdev) { struct ssb_gige *dev = pdev_to_ssb_gige(pdev); if (dev) return ((dev->dev->bus->chip_id == 0x4785) && (dev->dev->bus->chip_rev < 2)); return false; } /* Returns whether we must flush posted writes. */ static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev) { struct ssb_gige *dev = pdev_to_ssb_gige(pdev); if (dev) return (dev->dev->bus->chip_id == 0x4785); return false; } /* Get the device MAC address */ static inline int ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) { struct ssb_gige *dev = pdev_to_ssb_gige(pdev); if (!dev) return -ENODEV; memcpy(macaddr, dev->dev->bus->sprom.et0mac, 6); return 0; } /* Get the device phy address */ static inline int ssb_gige_get_phyaddr(struct pci_dev *pdev) { struct ssb_gige *dev = pdev_to_ssb_gige(pdev); if (!dev) return -ENODEV; return dev->dev->bus->sprom.et0phyaddr; } extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev, struct pci_dev *pdev); extern int ssb_gige_map_irq(struct ssb_device *sdev, const struct pci_dev *pdev); /* The GigE driver is not a standalone module, because we don't have support * for unregistering the driver. So we could not unload the module anyway. */ extern int ssb_gige_init(void); static inline void ssb_gige_exit(void) { /* Currently we can not unregister the GigE driver, * because we can not unregister the PCI bridge. */ BUG(); } #else /* CONFIG_SSB_DRIVER_GIGE */ /* Gigabit Ethernet driver disabled */ static inline int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev, struct pci_dev *pdev) { return -ENOSYS; } static inline int ssb_gige_map_irq(struct ssb_device *sdev, const struct pci_dev *pdev) { return -ENOSYS; } static inline int ssb_gige_init(void) { return 0; } static inline void ssb_gige_exit(void) { } static inline bool pdev_is_ssb_gige_core(struct pci_dev *pdev) { return false; } static inline struct ssb_gige * pdev_to_ssb_gige(struct pci_dev *pdev) { return NULL; } static inline bool ssb_gige_is_rgmii(struct pci_dev *pdev) { return false; } static inline bool ssb_gige_have_roboswitch(struct pci_dev *pdev) { return false; } static inline bool ssb_gige_one_dma_at_once(struct pci_dev *pdev) { return false; } static inline bool ssb_gige_must_flush_posted_writes(struct pci_dev *pdev) { return false; } static inline int ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr) { return -ENODEV; } static inline int ssb_gige_get_phyaddr(struct pci_dev *pdev) { return -ENODEV; } #endif /* CONFIG_SSB_DRIVER_GIGE */ #endif /* LINUX_SSB_DRIVER_GIGE_H_ */