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/* 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_ */