/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
 36struct 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. */
 53extern bool pdev_is_ssb_gige_core(struct pci_dev *pdev);
 54
 55/* Convert a pci_dev pointer to a ssb_gige pointer. */
 56static 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. */
 64static 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. */
 71static 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. */
 81static 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. */
 91static 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 */
102static 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
110static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
111{
112}
113#endif
114
115extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
116					  struct pci_dev *pdev);
117extern 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. */
122extern int ssb_gige_init(void);
123static 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
135static inline int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
136						 struct pci_dev *pdev)
137{
138	return -ENOSYS;
139}
140static inline int ssb_gige_map_irq(struct ssb_device *sdev,
141				   const struct pci_dev *pdev)
142{
143	return -ENOSYS;
144}
145static inline int ssb_gige_init(void)
146{
147	return 0;
148}
149static inline void ssb_gige_exit(void)
150{
151}
152
153static inline bool pdev_is_ssb_gige_core(struct pci_dev *pdev)
154{
155	return 0;
156}
157static inline struct ssb_gige * pdev_to_ssb_gige(struct pci_dev *pdev)
158{
159	return NULL;
160}
161static inline bool ssb_gige_is_rgmii(struct pci_dev *pdev)
162{
163	return 0;
164}
165static inline bool ssb_gige_have_roboswitch(struct pci_dev *pdev)
166{
167	return 0;
168}
169static inline bool ssb_gige_one_dma_at_once(struct pci_dev *pdev)
170{
171	return 0;
172}
173static 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_ */