Quelle bus.h
Sprache: C
// SPDX-License-Identifier: ISC
/*
* Copyright ( c ) 2010 Broadcom Corporation
*/
#ifndef BRCMFMAC_BUS_H
#define BRCMFMAC_BUS_H
#include <linux/kernel.h>
#include <linux/firmware.h>
#include <linux/device.h>
#include "debug.h"
/* IDs of the 6 default common rings of msgbuf protocol */
#define BRCMF_H2D_MSGRING_CONTROL_SUBMIT 0
#define BRCMF_H2D_MSGRING_RXPOST_SUBMIT 1
#define BRCMF_H2D_MSGRING_FLOWRING_IDSTART 2
#define BRCMF_D2H_MSGRING_CONTROL_COMPLETE 2
#define BRCMF_D2H_MSGRING_TX_COMPLETE 3
#define BRCMF_D2H_MSGRING_RX_COMPLETE 4
#define BRCMF_NROF_H2D_COMMON_MSGRINGS 2
#define BRCMF_NROF_D2H_COMMON_MSGRINGS 3
#define BRCMF_NROF_COMMON_MSGRINGS (BRCMF_NROF_H2D_COMMON_MSGRINGS + \
BRCMF_NROF_D2H_COMMON_MSGRINGS)
/* The interval to poll console */
#define BRCMF_CONSOLE 10
/* The maximum console interval value (5 mins) */
#define MAX_CONSOLE_INTERVAL (5 * 60 )
enum brcmf_fwvendor {
BRCMF_FWVENDOR_WCC,
BRCMF_FWVENDOR_CYW,
BRCMF_FWVENDOR_BCA,
/* keep last */
BRCMF_FWVENDOR_NUM,
BRCMF_FWVENDOR_INVALID
};
/* The level of bus communication with the dongle */
enum brcmf_bus_state {
BRCMF_BUS_DOWN, /* Not ready for frame transfers */
BRCMF_BUS_UP /* Ready for frame transfers */
};
/* The level of bus communication with the dongle */
enum brcmf_bus_protocol_type {
BRCMF_PROTO_BCDC,
BRCMF_PROTO_MSGBUF
};
/* Firmware blobs that may be available */
enum brcmf_blob_type {
BRCMF_BLOB_CLM,
BRCMF_BLOB_TXCAP,
};
struct brcmf_mp_device;
struct brcmf_bus_dcmd {
char *name;
char *param;
int param_len;
struct list_head list;
};
/**
* struct brcmf_bus_ops - bus callback operations .
*
* @ preinit : execute bus / device specific dongle init commands ( optional ) .
* @ init : prepare for communication with dongle .
* @ stop : clear pending frames , disable data flow .
* @ txdata : send a data frame to the dongle . When the data
* has been transferred , the common driver must be
* notified using brcmf_txcomplete ( ) . The common
* driver calls this function with interrupts
* disabled .
* @ txctl : transmit a control request message to dongle .
* @ rxctl : receive a control response message from dongle .
* @ gettxq : obtain a reference of bus transmit queue ( optional ) .
* @ wowl_config : specify if dongle is configured for wowl when going to suspend
* @ get_ramsize : obtain size of device memory .
* @ get_memdump : obtain device memory dump in provided buffer .
* @ get_blob : obtain a firmware blob .
* @ remove : initiate unbind of the device .
*
* This structure provides an abstract interface towards the
* bus specific driver . For control messages to common driver
* will assure there is only one active transaction . Unless
* indicated otherwise these callbacks are mandatory .
*/
struct brcmf_bus_ops {
int (*preinit)(struct device *dev);
void (*stop)(struct device *dev);
int (*txdata)(struct device *dev, struct sk_buff *skb);
int (*txctl)(struct device *dev, unsigned char *msg, uint len);
int (*rxctl)(struct device *dev, unsigned char *msg, uint len);
struct pktq * (*gettxq)(struct device *dev);
void (*wowl_config)(struct device *dev, bool enabled);
size_t (*get_ramsize)(struct device *dev);
int (*get_memdump)(struct device *dev, void *data, size_t len);
int (*get_blob)(struct device *dev, const struct firmware **fw,
enum brcmf_blob_type type);
void (*debugfs_create)(struct device *dev);
int (*reset)(struct device *dev);
void (*remove)(struct device *dev);
};
/**
* struct brcmf_bus_msgbuf - bus ringbuf if in case of msgbuf .
*
* @ commonrings : commonrings which are always there .
* @ flowrings : commonrings which are dynamically created and destroyed for data .
* @ rx_dataoffset : if set then all rx data has this offset .
* @ max_rxbufpost : maximum number of buffers to post for rx .
* @ max_flowrings : maximum number of tx flow rings supported .
* @ max_submissionrings : maximum number of submission rings ( h2d ) supported .
* @ max_completionrings : maximum number of completion rings ( d2h ) supported .
*/
struct brcmf_bus_msgbuf {
struct brcmf_commonring *commonrings[BRCMF_NROF_COMMON_MSGRINGS];
struct brcmf_commonring **flowrings;
u32 rx_dataoffset;
u32 max_rxbufpost;
u16 max_flowrings;
u16 max_submissionrings;
u16 max_completionrings;
};
/**
* struct brcmf_bus_stats - bus statistic counters .
*
* @ pktcowed : packets cowed for extra headroom / unorphan .
* @ pktcow_failed : packets dropped due to failed cow - ing .
*/
struct brcmf_bus_stats {
atomic_t pktcowed;
atomic_t pktcow_failed;
};
/**
* struct brcmf_bus - interface structure between common and bus layer
*
* @ bus_priv : pointer to private bus device .
* @ proto_type : protocol type , bcdc or msgbuf
* @ dev : device pointer of bus device .
* @ drvr : public driver information .
* @ state : operational state of the bus interface .
* @ stats : statistics shared between common and bus layer .
* @ maxctl : maximum size for rxctl request message .
* @ chip : device identifier of the dongle chip .
* @ chiprev : revision of the dongle chip .
* @ fwvid : firmware vendor - support identifier of the device .
* @ always_use_fws_queue : bus wants use queue also when fwsignal is inactive .
* @ wowl_supported : is wowl supported by bus driver .
* @ ops : callbacks for this bus instance .
* @ msgbuf : msgbuf protocol parameters provided by bus layer .
* @ list : member used to add this bus instance to linked list .
*/
struct brcmf_bus {
union {
struct brcmf_sdio_dev *sdio;
struct brcmf_usbdev *usb;
struct brcmf_pciedev *pcie;
} bus_priv;
enum brcmf_bus_protocol_type proto_type;
struct device *dev;
struct brcmf_pub *drvr;
enum brcmf_bus_state state;
struct brcmf_bus_stats stats;
uint maxctl;
u32 chip;
u32 chiprev;
enum brcmf_fwvendor fwvid;
bool always_use_fws_queue;
bool wowl_supported;
const struct brcmf_bus_ops *ops;
struct brcmf_bus_msgbuf *msgbuf;
struct list_head list;
};
/*
* callback wrappers
*/
static inline int brcmf_bus_preinit(struct brcmf_bus *bus)
{
if (!bus->ops->preinit)
return 0 ;
return bus->ops->preinit(bus->dev);
}
static inline void brcmf_bus_stop(struct brcmf_bus *bus)
{
bus->ops->stop(bus->dev);
}
static inline int brcmf_bus_txdata(struct brcmf_bus *bus, struct sk_buff *skb)
{
return bus->ops->txdata(bus->dev, skb);
}
static inline
int brcmf_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint len)
{
return bus->ops->txctl(bus->dev, msg, len);
}
static inline
int brcmf_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint len)
{
return bus->ops->rxctl(bus->dev, msg, len);
}
static inline
struct pktq *brcmf_bus_gettxq(struct brcmf_bus *bus)
{
if (!bus->ops->gettxq)
return ERR_PTR(-ENOENT);
return bus->ops->gettxq(bus->dev);
}
static inline
void brcmf_bus_wowl_config(struct brcmf_bus *bus, bool enabled)
{
if (bus->ops->wowl_config)
bus->ops->wowl_config(bus->dev, enabled);
}
static inline size_t brcmf_bus_get_ramsize(struct brcmf_bus *bus)
{
if (!bus->ops->get_ramsize)
return 0 ;
return bus->ops->get_ramsize(bus->dev);
}
static inline
int brcmf_bus_get_memdump(struct brcmf_bus *bus, void *data, size_t len)
{
if (!bus->ops->get_memdump)
return -EOPNOTSUPP;
return bus->ops->get_memdump(bus->dev, data, len);
}
static inline
int brcmf_bus_get_blob(struct brcmf_bus *bus, const struct firmware **fw,
enum brcmf_blob_type type)
{
return bus->ops->get_blob(bus->dev, fw, type);
}
static inline
void brcmf_bus_debugfs_create(struct brcmf_bus *bus)
{
if (!bus->ops->debugfs_create)
return ;
return bus->ops->debugfs_create(bus->dev);
}
static inline
int brcmf_bus_reset(struct brcmf_bus *bus)
{
if (!bus->ops->reset)
return -EOPNOTSUPP;
return bus->ops->reset(bus->dev);
}
static inline void brcmf_bus_remove(struct brcmf_bus *bus)
{
if (!bus->ops->remove) {
device_release_driver(bus->dev);
return ;
}
bus->ops->remove(bus->dev);
}
/*
* interface functions from common layer
*/
/* Receive frame for delivery to OS. Callee disposes of rxp. */
void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp, bool handle_event,
bool inirq);
/* Receive async event packet from firmware. Callee disposes of rxp. */
void brcmf_rx_event(struct device *dev, struct sk_buff *rxp);
int brcmf_alloc(struct device *dev, struct brcmf_mp_device *settings);
/* Indication from bus module regarding presence/insertion of dongle. */
int brcmf_attach(struct device *dev);
/* Indication from bus module regarding removal/absence of dongle */
void brcmf_detach(struct device *dev);
void brcmf_free(struct device *dev);
/* Indication from bus module that dongle should be reset */
void brcmf_dev_reset(struct device *dev);
/* Request from bus module to initiate a coredump */
void brcmf_dev_coredump(struct device *dev);
/* Indication that firmware has halted or crashed */
void brcmf_fw_crashed(struct device *dev);
/* Configure the "global" bus state used by upper layers */
void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state);
s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len);
void brcmf_bus_add_txhdrlen(struct device *dev, uint len);
#ifdef CONFIG_BRCMFMAC_SDIO
void brcmf_sdio_exit(void );
int brcmf_sdio_register(void );
#else
static inline void brcmf_sdio_exit(void ) { }
static inline int brcmf_sdio_register(void ) { return 0 ; }
#endif
#ifdef CONFIG_BRCMFMAC_USB
void brcmf_usb_exit(void );
int brcmf_usb_register(void );
#else
static inline void brcmf_usb_exit(void ) { }
static inline int brcmf_usb_register(void ) { return 0 ; }
#endif
#ifdef CONFIG_BRCMFMAC_PCIE
void brcmf_pcie_exit(void );
int brcmf_pcie_register(void );
#else
static inline void brcmf_pcie_exit(void ) { }
static inline int brcmf_pcie_register(void ) { return 0 ; }
#endif
#endif /* BRCMFMAC_BUS_H */
Messung V0.5 in Prozent C=93 H=100 G=96
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-12)
¤
*© Formatika GbR, Deutschland
2026-10-11
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