system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-27 21:59:21 +00:00
Code Issues Packages Projects Releases Wiki Activity
linux/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
Franky Lin 4531603a7a brcmfmac: clear status for in-band interrupt in brcmf_sdbrcm_isr 
SDIO in-band interrupt is level sensitive according to SDIO standard.
When the register interrupt handler gets called by SDIO stack it is
running in non interrupt context and expected to clear the interrupt
from the dongle. Therefore in-band and out-of-band interrupt need to
be handled differently.

Cc: Wei Ni <wni@nvidia.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>

Reported-by: Wei Ni <wni@nvidia.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-24 14:59:09 -04:00

275 lines
9.3 KiB
C
Raw Blame History

/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _BRCM_SDH_H_
#define _BRCM_SDH_H_
#include <linux/skbuff.h>
#define SDIO_FUNC_0 0
#define SDIO_FUNC_1 1
#define SDIO_FUNC_2 2
#define SDIOD_FBR_SIZE 0x100
/* io_en */
#define SDIO_FUNC_ENABLE_1 0x02
#define SDIO_FUNC_ENABLE_2 0x04
/* io_rdys */
#define SDIO_FUNC_READY_1 0x02
#define SDIO_FUNC_READY_2 0x04
/* intr_status */
#define INTR_STATUS_FUNC1 0x2
#define INTR_STATUS_FUNC2 0x4
/* Maximum number of I/O funcs */
#define SDIOD_MAX_IOFUNCS 7
/* mask of register map */
#define REG_F0_REG_MASK 0x7FF
#define REG_F1_MISC_MASK 0x1FFFF
/* as of sdiod rev 0, supports 3 functions */
#define SBSDIO_NUM_FUNCTION 3
/* function 0 vendor specific CCCR registers */
#define SDIO_CCCR_BRCM_SEPINT 0xf2
#define SDIO_SEPINT_MASK 0x01
#define SDIO_SEPINT_OE 0x02
#define SDIO_SEPINT_ACT_HI 0x04
/* function 1 miscellaneous registers */
/* sprom command and status */
#define SBSDIO_SPROM_CS 0x10000
/* sprom info register */
#define SBSDIO_SPROM_INFO 0x10001
/* sprom indirect access data byte 0 */
#define SBSDIO_SPROM_DATA_LOW 0x10002
/* sprom indirect access data byte 1 */
#define SBSDIO_SPROM_DATA_HIGH 0x10003
/* sprom indirect access addr byte 0 */
#define SBSDIO_SPROM_ADDR_LOW 0x10004
/* sprom indirect access addr byte 0 */
#define SBSDIO_SPROM_ADDR_HIGH 0x10005
/* xtal_pu (gpio) output */
#define SBSDIO_CHIP_CTRL_DATA 0x10006
/* xtal_pu (gpio) enable */
#define SBSDIO_CHIP_CTRL_EN 0x10007
/* rev < 7, watermark for sdio device */
#define SBSDIO_WATERMARK 0x10008
/* control busy signal generation */
#define SBSDIO_DEVICE_CTL 0x10009
/* SB Address Window Low (b15) */
#define SBSDIO_FUNC1_SBADDRLOW 0x1000A
/* SB Address Window Mid (b23:b16) */
#define SBSDIO_FUNC1_SBADDRMID 0x1000B
/* SB Address Window High (b31:b24) */
#define SBSDIO_FUNC1_SBADDRHIGH 0x1000C
/* Frame Control (frame term/abort) */
#define SBSDIO_FUNC1_FRAMECTRL 0x1000D
/* ChipClockCSR (ALP/HT ctl/status) */
#define SBSDIO_FUNC1_CHIPCLKCSR 0x1000E
/* SdioPullUp (on cmd, d0-d2) */
#define SBSDIO_FUNC1_SDIOPULLUP 0x1000F
/* Write Frame Byte Count Low */
#define SBSDIO_FUNC1_WFRAMEBCLO 0x10019
/* Write Frame Byte Count High */
#define SBSDIO_FUNC1_WFRAMEBCHI 0x1001A
/* Read Frame Byte Count Low */
#define SBSDIO_FUNC1_RFRAMEBCLO 0x1001B
/* Read Frame Byte Count High */
#define SBSDIO_FUNC1_RFRAMEBCHI 0x1001C
#define SBSDIO_FUNC1_MISC_REG_START 0x10000 /* f1 misc register start */
#define SBSDIO_FUNC1_MISC_REG_LIMIT 0x1001C /* f1 misc register end */
/* function 1 OCP space */
/* sb offset addr is <= 15 bits, 32k */
#define SBSDIO_SB_OFT_ADDR_MASK 0x07FFF
#define SBSDIO_SB_OFT_ADDR_LIMIT 0x08000
/* with b15, maps to 32-bit SB access */
#define SBSDIO_SB_ACCESS_2_4B_FLAG 0x08000
/* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */
#define SBSDIO_SBADDRLOW_MASK 0x80 /* Valid bits in SBADDRLOW */
#define SBSDIO_SBADDRMID_MASK 0xff /* Valid bits in SBADDRMID */
#define SBSDIO_SBADDRHIGH_MASK 0xffU /* Valid bits in SBADDRHIGH */
/* Address bits from SBADDR regs */
#define SBSDIO_SBWINDOW_MASK 0xffff8000
#define SDIOH_READ 0 /* Read request */
#define SDIOH_WRITE 1 /* Write request */
#define SDIOH_DATA_FIX 0 /* Fixed addressing */
#define SDIOH_DATA_INC 1 /* Incremental addressing */
/* internal return code */
#define SUCCESS 0
#define ERROR 1
/* Packet alignment for most efficient SDIO (can change based on platform) */
#define BRCMF_SDALIGN (1 << 6)
/* watchdog polling interval in ms */
#define BRCMF_WD_POLL_MS 10
struct brcmf_sdreg {
int func;
int offset;
int value;
};
struct brcmf_sdio;
struct brcmf_sdio_dev {
struct sdio_func *func[SDIO_MAX_FUNCS];
u8 num_funcs; /* Supported funcs on client */
u32 func_cis_ptr[SDIOD_MAX_IOFUNCS];
u32 sbwad; /* Save backplane window address */
void *bus;
atomic_t suspend; /* suspend flag */
wait_queue_head_t request_byte_wait;
wait_queue_head_t request_word_wait;
wait_queue_head_t request_chain_wait;
wait_queue_head_t request_buffer_wait;
struct device *dev;
struct brcmf_bus *bus_if;
#ifdef CONFIG_BRCMFMAC_SDIO_OOB
unsigned int irq; /* oob interrupt number */
unsigned long irq_flags; /* board specific oob flags */
bool irq_en; /* irq enable flags */
spinlock_t irq_en_lock;
bool irq_wake; /* irq wake enable flags */
#endif /* CONFIG_BRCMFMAC_SDIO_OOB */
};
/* Register/deregister interrupt handler. */
extern int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev);
extern int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev);
/* sdio device register access interface */
extern u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
extern u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret);
extern void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
u8 data, int *ret);
extern void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
u32 data, int *ret);
extern int brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
void *data, bool write);
/* Buffer transfer to/from device (client) core via cmd53.
* fn: function number
* addr: backplane address (i.e. >= regsva from attach)
* flags: backplane width, address increment, sync/async
* buf: pointer to memory data buffer
* nbytes: number of bytes to transfer to/from buf
* pkt: pointer to packet associated with buf (if any)
* complete: callback function for command completion (async only)
* handle: handle for completion callback (first arg in callback)
* Returns 0 or error code.
* NOTE: Async operation is not currently supported.
*/
extern int
brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
uint flags, struct sk_buff *pkt);
extern int
brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
uint flags, u8 *buf, uint nbytes);
extern int
brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
uint flags, struct sk_buff *pkt);
extern int
brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
uint flags, u8 *buf, uint nbytes);
extern int
brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
uint flags, struct sk_buff_head *pktq);
/* Flags bits */
/* Four-byte target (backplane) width (vs. two-byte) */
#define SDIO_REQ_4BYTE 0x1
/* Fixed address (FIFO) (vs. incrementing address) */
#define SDIO_REQ_FIXED 0x2
/* Async request (vs. sync request) */
#define SDIO_REQ_ASYNC 0x4
/* Read/write to memory block (F1, no FIFO) via CMD53 (sync only).
* rw: read or write (0/1)
* addr: direct SDIO address
* buf: pointer to memory data buffer
* nbytes: number of bytes to transfer to/from buf
* Returns 0 or error code.
*/
extern int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw,
u32 addr, u8 *buf, uint nbytes);
/* Issue an abort to the specified function */
extern int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn);
/* platform specific/high level functions */
extern int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev);
extern int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev);
extern int brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev,
u32 address);
/* attach, return handler on success, NULL if failed.
* The handler shall be provided by all subsequent calls. No local cache
* cfghdl points to the starting address of pci device mapped memory
*/
extern int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev);
extern void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev);
/* read or write one byte using cmd52 */
extern int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw,
uint fnc, uint addr, u8 *byte);
/* read or write 2/4 bytes using cmd53 */
extern int
brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
uint rw, uint fnc, uint addr,
u32 *word, uint nbyte);
/* read or write any buffer using cmd53 */
extern int
brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
uint fix_inc, uint rw, uint fnc_num, u32 addr,
struct sk_buff *pkt);
extern int
brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
uint write, uint func, uint addr,
struct sk_buff_head *pktq);
/* Watchdog timer interface for pm ops */
extern void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev,
bool enable);
extern void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev);
extern void brcmf_sdbrcm_disconnect(void *ptr);
extern void brcmf_sdbrcm_isr(void *arg);
extern void brcmf_sdbrcm_wd_timer(struct brcmf_sdio *bus, uint wdtick);
#endif /* _BRCM_SDH_H_ */
Reference in a new issue View git blame Copy permalink