2 * Copyright (c) 2010 Broadcom Corporation
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/types.h>
18 #include <linux/kernel.h>
19 #include <linux/kthread.h>
20 #include <linux/printk.h>
21 #include <linux/pci_ids.h>
22 #include <linux/netdevice.h>
23 #include <linux/interrupt.h>
24 #include <linux/sched.h>
25 #include <linux/mmc/sdio.h>
26 #include <linux/mmc/sdio_ids.h>
27 #include <linux/mmc/sdio_func.h>
28 #include <linux/mmc/card.h>
29 #include <linux/semaphore.h>
30 #include <linux/firmware.h>
31 #include <linux/module.h>
32 #include <linux/bcma/bcma.h>
33 #include <linux/debugfs.h>
34 #include <linux/vmalloc.h>
35 #include <linux/platform_data/brcmfmac-sdio.h>
36 #include <linux/moduleparam.h>
37 #include <asm/unaligned.h>
39 #include <brcmu_wifi.h>
40 #include <brcmu_utils.h>
41 #include <brcm_hw_ids.h>
43 #include "sdio_host.h"
47 #define DCMD_RESP_TIMEOUT 2000 /* In milli second */
51 #define BRCMF_TRAP_INFO_SIZE 80
53 #define CBUF_LEN (128)
55 /* Device console log buffer state */
56 #define CONSOLE_BUFFER_MAX 2024
59 __le32 buf; /* Can't be pointer on (64-bit) hosts */
62 char *_buf_compat; /* Redundant pointer for backward compat. */
67 * When there is no UART (e.g. Quickturn),
68 * the host should write a complete
69 * input line directly into cbuf and then write
70 * the length into vcons_in.
71 * This may also be used when there is a real UART
72 * (at risk of conflicting with
73 * the real UART). vcons_out is currently unused.
78 /* Output (logging) buffer
79 * Console output is written to a ring buffer log_buf at index log_idx.
80 * The host may read the output when it sees log_idx advance.
81 * Output will be lost if the output wraps around faster than the host
84 struct rte_log_le log_le;
86 /* Console input line buffer
87 * Characters are read one at a time into cbuf
88 * until <CR> is received, then
89 * the buffer is processed as a command line.
90 * Also used for virtual UART.
97 #include <chipcommon.h>
101 #include "tracepoint.h"
103 #define TXQLEN 2048 /* bulk tx queue length */
104 #define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */
105 #define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */
108 #define TXRETRIES 2 /* # of retries for tx frames */
110 #define BRCMF_RXBOUND 50 /* Default for max rx frames in
113 #define BRCMF_TXBOUND 20 /* Default for max tx frames in
116 #define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */
118 #define MEMBLOCK 2048 /* Block size used for downloading
120 #define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold
121 biggest possible glom */
123 #define BRCMF_FIRSTREAD (1 << 6)
126 /* SBSDIO_DEVICE_CTL */
128 /* 1: device will assert busy signal when receiving CMD53 */
129 #define SBSDIO_DEVCTL_SETBUSY 0x01
130 /* 1: assertion of sdio interrupt is synchronous to the sdio clock */
131 #define SBSDIO_DEVCTL_SPI_INTR_SYNC 0x02
132 /* 1: mask all interrupts to host except the chipActive (rev 8) */
133 #define SBSDIO_DEVCTL_CA_INT_ONLY 0x04
134 /* 1: isolate internal sdio signals, put external pads in tri-state; requires
135 * sdio bus power cycle to clear (rev 9) */
136 #define SBSDIO_DEVCTL_PADS_ISO 0x08
137 /* Force SD->SB reset mapping (rev 11) */
138 #define SBSDIO_DEVCTL_SB_RST_CTL 0x30
139 /* Determined by CoreControl bit */
140 #define SBSDIO_DEVCTL_RST_CORECTL 0x00
141 /* Force backplane reset */
142 #define SBSDIO_DEVCTL_RST_BPRESET 0x10
143 /* Force no backplane reset */
144 #define SBSDIO_DEVCTL_RST_NOBPRESET 0x20
146 /* direct(mapped) cis space */
148 /* MAPPED common CIS address */
149 #define SBSDIO_CIS_BASE_COMMON 0x1000
150 /* maximum bytes in one CIS */
151 #define SBSDIO_CIS_SIZE_LIMIT 0x200
152 /* cis offset addr is < 17 bits */
153 #define SBSDIO_CIS_OFT_ADDR_MASK 0x1FFFF
155 /* manfid tuple length, include tuple, link bytes */
156 #define SBSDIO_CIS_MANFID_TUPLE_LEN 6
158 #define CORE_BUS_REG(base, field) \
159 (base + offsetof(struct sdpcmd_regs, field))
161 /* SDIO function 1 register CHIPCLKCSR */
162 /* Force ALP request to backplane */
163 #define SBSDIO_FORCE_ALP 0x01
164 /* Force HT request to backplane */
165 #define SBSDIO_FORCE_HT 0x02
166 /* Force ILP request to backplane */
167 #define SBSDIO_FORCE_ILP 0x04
168 /* Make ALP ready (power up xtal) */
169 #define SBSDIO_ALP_AVAIL_REQ 0x08
170 /* Make HT ready (power up PLL) */
171 #define SBSDIO_HT_AVAIL_REQ 0x10
172 /* Squelch clock requests from HW */
173 #define SBSDIO_FORCE_HW_CLKREQ_OFF 0x20
174 /* Status: ALP is ready */
175 #define SBSDIO_ALP_AVAIL 0x40
176 /* Status: HT is ready */
177 #define SBSDIO_HT_AVAIL 0x80
178 #define SBSDIO_CSR_MASK 0x1F
179 #define SBSDIO_AVBITS (SBSDIO_HT_AVAIL | SBSDIO_ALP_AVAIL)
180 #define SBSDIO_ALPAV(regval) ((regval) & SBSDIO_AVBITS)
181 #define SBSDIO_HTAV(regval) (((regval) & SBSDIO_AVBITS) == SBSDIO_AVBITS)
182 #define SBSDIO_ALPONLY(regval) (SBSDIO_ALPAV(regval) && !SBSDIO_HTAV(regval))
183 #define SBSDIO_CLKAV(regval, alponly) \
184 (SBSDIO_ALPAV(regval) && (alponly ? 1 : SBSDIO_HTAV(regval)))
187 #define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */
188 #define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */
189 #define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */
190 #define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */
191 #define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */
192 #define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */
193 #define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */
194 #define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */
195 #define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */
196 #define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */
197 #define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */
198 #define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */
199 #define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */
200 #define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */
201 #define I_PC (1 << 10) /* descriptor error */
202 #define I_PD (1 << 11) /* data error */
203 #define I_DE (1 << 12) /* Descriptor protocol Error */
204 #define I_RU (1 << 13) /* Receive descriptor Underflow */
205 #define I_RO (1 << 14) /* Receive fifo Overflow */
206 #define I_XU (1 << 15) /* Transmit fifo Underflow */
207 #define I_RI (1 << 16) /* Receive Interrupt */
208 #define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */
209 #define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */
210 #define I_XI (1 << 24) /* Transmit Interrupt */
211 #define I_RF_TERM (1 << 25) /* Read Frame Terminate */
212 #define I_WF_TERM (1 << 26) /* Write Frame Terminate */
213 #define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */
214 #define I_SBINT (1 << 28) /* sbintstatus Interrupt */
215 #define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */
216 #define I_SRESET (1 << 30) /* CCCR RES interrupt */
217 #define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */
218 #define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU)
219 #define I_DMA (I_RI | I_XI | I_ERRORS)
222 #define CC_CISRDY (1 << 0) /* CIS Ready */
223 #define CC_BPRESEN (1 << 1) /* CCCR RES signal */
224 #define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */
225 #define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */
226 #define CC_XMTDATAAVAIL_MODE (1 << 4)
227 #define CC_XMTDATAAVAIL_CTRL (1 << 5)
230 #define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */
231 #define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */
232 #define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */
233 #define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */
236 * Software allocation of To SB Mailbox resources
239 /* tosbmailbox bits corresponding to intstatus bits */
240 #define SMB_NAK (1 << 0) /* Frame NAK */
241 #define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */
242 #define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */
243 #define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */
245 /* tosbmailboxdata */
246 #define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */
249 * Software allocation of To Host Mailbox resources
253 #define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */
254 #define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */
255 #define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */
256 #define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */
258 /* tohostmailboxdata */
259 #define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */
260 #define HMB_DATA_DEVREADY 2 /* talk to host after enable */
261 #define HMB_DATA_FC 4 /* per prio flowcontrol update flag */
262 #define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */
264 #define HMB_DATA_FCDATA_MASK 0xff000000
265 #define HMB_DATA_FCDATA_SHIFT 24
267 #define HMB_DATA_VERSION_MASK 0x00ff0000
268 #define HMB_DATA_VERSION_SHIFT 16
271 * Software-defined protocol header
274 /* Current protocol version */
275 #define SDPCM_PROT_VERSION 4
278 * Shared structure between dongle and the host.
279 * The structure contains pointers to trap or assert information.
281 #define SDPCM_SHARED_VERSION 0x0003
282 #define SDPCM_SHARED_VERSION_MASK 0x00FF
283 #define SDPCM_SHARED_ASSERT_BUILT 0x0100
284 #define SDPCM_SHARED_ASSERT 0x0200
285 #define SDPCM_SHARED_TRAP 0x0400
287 /* Space for header read, limit for data packets */
288 #define MAX_HDR_READ (1 << 6)
289 #define MAX_RX_DATASZ 2048
291 /* Bump up limit on waiting for HT to account for first startup;
292 * if the image is doing a CRC calculation before programming the PMU
293 * for HT availability, it could take a couple hundred ms more, so
294 * max out at a 1 second (1000000us).
296 #undef PMU_MAX_TRANSITION_DLY
297 #define PMU_MAX_TRANSITION_DLY 1000000
299 /* Value for ChipClockCSR during initial setup */
300 #define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \
301 SBSDIO_ALP_AVAIL_REQ)
303 /* Flags for SDH calls */
304 #define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED)
306 #define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change
309 #define BRCMF_IDLE_INTERVAL 1
311 #define KSO_WAIT_US 50
312 #define MAX_KSO_ATTEMPTS (PMU_MAX_TRANSITION_DLY/KSO_WAIT_US)
315 * Conversion of 802.1D priority to precedence level
317 static uint prio2prec(u32 prio)
319 return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ?
324 /* Device console log buffer state */
325 struct brcmf_console {
326 uint count; /* Poll interval msec counter */
327 uint log_addr; /* Log struct address (fixed) */
328 struct rte_log_le log_le; /* Log struct (host copy) */
329 uint bufsize; /* Size of log buffer */
330 u8 *buf; /* Log buffer (host copy) */
331 uint last; /* Last buffer read index */
334 struct brcmf_trap_info {
348 __le32 r9; /* sb/v6 */
349 __le32 r10; /* sl/v7 */
350 __le32 r11; /* fp/v8 */
358 struct sdpcm_shared {
362 u32 assert_file_addr;
364 u32 console_addr; /* Address of struct rte_console */
370 struct sdpcm_shared_le {
373 __le32 assert_exp_addr;
374 __le32 assert_file_addr;
376 __le32 console_addr; /* Address of struct rte_console */
377 __le32 msgtrace_addr;
382 /* dongle SDIO bus specific header info */
383 struct brcmf_sdio_hdrinfo {
395 * hold counter variables
397 struct brcmf_sdio_count {
398 uint intrcount; /* Count of device interrupt callbacks */
399 uint lastintrs; /* Count as of last watchdog timer */
400 uint pollcnt; /* Count of active polls */
401 uint regfails; /* Count of R_REG failures */
402 uint tx_sderrs; /* Count of tx attempts with sd errors */
403 uint fcqueued; /* Tx packets that got queued */
404 uint rxrtx; /* Count of rtx requests (NAK to dongle) */
405 uint rx_toolong; /* Receive frames too long to receive */
406 uint rxc_errors; /* SDIO errors when reading control frames */
407 uint rx_hdrfail; /* SDIO errors on header reads */
408 uint rx_badhdr; /* Bad received headers (roosync?) */
409 uint rx_badseq; /* Mismatched rx sequence number */
410 uint fc_rcvd; /* Number of flow-control events received */
411 uint fc_xoff; /* Number which turned on flow-control */
412 uint fc_xon; /* Number which turned off flow-control */
413 uint rxglomfail; /* Failed deglom attempts */
414 uint rxglomframes; /* Number of glom frames (superframes) */
415 uint rxglompkts; /* Number of packets from glom frames */
416 uint f2rxhdrs; /* Number of header reads */
417 uint f2rxdata; /* Number of frame data reads */
418 uint f2txdata; /* Number of f2 frame writes */
419 uint f1regdata; /* Number of f1 register accesses */
420 uint tickcnt; /* Number of watchdog been schedule */
421 ulong tx_ctlerrs; /* Err of sending ctrl frames */
422 ulong tx_ctlpkts; /* Ctrl frames sent to dongle */
423 ulong rx_ctlerrs; /* Err of processing rx ctrl frames */
424 ulong rx_ctlpkts; /* Ctrl frames processed from dongle */
425 ulong rx_readahead_cnt; /* packets where header read-ahead was used */
428 /* misc chip info needed by some of the routines */
429 /* Private data for SDIO bus interaction */
431 struct brcmf_sdio_dev *sdiodev; /* sdio device handler */
432 struct brcmf_chip *ci; /* Chip info struct */
434 u32 ramsize; /* Size of RAM in SOCRAM (bytes) */
436 u32 hostintmask; /* Copy of Host Interrupt Mask */
437 atomic_t intstatus; /* Intstatus bits (events) pending */
438 atomic_t fcstate; /* State of dongle flow-control */
440 uint blocksize; /* Block size of SDIO transfers */
441 uint roundup; /* Max roundup limit */
443 struct pktq txq; /* Queue length used for flow-control */
444 u8 flowcontrol; /* per prio flow control bitmask */
445 u8 tx_seq; /* Transmit sequence number (next) */
446 u8 tx_max; /* Maximum transmit sequence allowed */
448 u8 *hdrbuf; /* buffer for handling rx frame */
449 u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */
450 u8 rx_seq; /* Receive sequence number (expected) */
451 struct brcmf_sdio_hdrinfo cur_read;
452 /* info of current read frame */
453 bool rxskip; /* Skip receive (awaiting NAK ACK) */
454 bool rxpending; /* Data frame pending in dongle */
456 uint rxbound; /* Rx frames to read before resched */
457 uint txbound; /* Tx frames to send before resched */
460 struct sk_buff *glomd; /* Packet containing glomming descriptor */
461 struct sk_buff_head glom; /* Packet list for glommed superframe */
462 uint glomerr; /* Glom packet read errors */
464 u8 *rxbuf; /* Buffer for receiving control packets */
465 uint rxblen; /* Allocated length of rxbuf */
466 u8 *rxctl; /* Aligned pointer into rxbuf */
467 u8 *rxctl_orig; /* pointer for freeing rxctl */
468 uint rxlen; /* Length of valid data in buffer */
469 spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */
471 u8 sdpcm_ver; /* Bus protocol reported by dongle */
473 bool intr; /* Use interrupts */
474 bool poll; /* Use polling */
475 atomic_t ipend; /* Device interrupt is pending */
476 uint spurious; /* Count of spurious interrupts */
477 uint pollrate; /* Ticks between device polls */
478 uint polltick; /* Tick counter */
481 uint console_interval;
482 struct brcmf_console console; /* Console output polling support */
483 uint console_addr; /* Console address from shared struct */
486 uint clkstate; /* State of sd and backplane clock(s) */
487 bool activity; /* Activity flag for clock down */
488 s32 idletime; /* Control for activity timeout */
489 s32 idlecount; /* Activity timeout counter */
490 s32 idleclock; /* How to set bus driver when idle */
491 bool rxflow_mode; /* Rx flow control mode */
492 bool rxflow; /* Is rx flow control on */
493 bool alp_only; /* Don't use HT clock (ALP only) */
497 bool ctrl_frame_stat;
499 spinlock_t txq_lock; /* protect bus->txq */
500 struct semaphore tx_seq_lock; /* protect bus->tx_seq */
501 wait_queue_head_t ctrl_wait;
502 wait_queue_head_t dcmd_resp_wait;
504 struct timer_list timer;
505 struct completion watchdog_wait;
506 struct task_struct *watchdog_tsk;
510 struct workqueue_struct *brcmf_wq;
511 struct work_struct datawork;
514 bool txoff; /* Transmit flow-controlled */
515 struct brcmf_sdio_count sdcnt;
516 bool sr_enabled; /* SaveRestore enabled */
517 bool sleeping; /* SDIO bus sleeping */
519 u8 tx_hdrlen; /* sdio bus header length for tx packet */
520 bool txglom; /* host tx glomming enable flag */
521 u16 head_align; /* buffer pointer alignment */
522 u16 sgentry_align; /* scatter-gather buffer alignment */
528 #define CLK_PENDING 2
532 static int qcount[NUMPRIO];
535 #define DEFAULT_SDIO_DRIVE_STRENGTH 6 /* in milliamps */
537 #define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL)
539 /* Retry count for register access failures */
540 static const uint retry_limit = 2;
542 /* Limit on rounding up frames */
543 static const uint max_roundup = 512;
547 enum brcmf_sdio_frmtype {
548 BRCMF_SDIO_FT_NORMAL,
553 #define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu))
555 /* SDIO Pad drive strength to select value mappings */
556 struct sdiod_drive_str {
557 u8 strength; /* Pad Drive Strength in mA */
558 u8 sel; /* Chip-specific select value */
561 /* SDIO Drive Strength to sel value table for PMU Rev 11 (1.8V) */
562 static const struct sdiod_drive_str sdiod_drvstr_tab1_1v8[] = {
573 /* SDIO Drive Strength to sel value table for PMU Rev 13 (1.8v) */
574 static const struct sdiod_drive_str sdiod_drive_strength_tab5_1v8[] = {
584 /* SDIO Drive Strength to sel value table for PMU Rev 17 (1.8v) */
585 static const struct sdiod_drive_str sdiod_drvstr_tab6_1v8[] = {
591 /* SDIO Drive Strength to sel value table for 43143 PMU Rev 17 (3.3V) */
592 static const struct sdiod_drive_str sdiod_drvstr_tab2_3v3[] = {
599 #define BCM43143_FIRMWARE_NAME "brcm/brcmfmac43143-sdio.bin"
600 #define BCM43143_NVRAM_NAME "brcm/brcmfmac43143-sdio.txt"
601 #define BCM43241B0_FIRMWARE_NAME "brcm/brcmfmac43241b0-sdio.bin"
602 #define BCM43241B0_NVRAM_NAME "brcm/brcmfmac43241b0-sdio.txt"
603 #define BCM43241B4_FIRMWARE_NAME "brcm/brcmfmac43241b4-sdio.bin"
604 #define BCM43241B4_NVRAM_NAME "brcm/brcmfmac43241b4-sdio.txt"
605 #define BCM4329_FIRMWARE_NAME "brcm/brcmfmac4329-sdio.bin"
606 #define BCM4329_NVRAM_NAME "brcm/brcmfmac4329-sdio.txt"
607 #define BCM4330_FIRMWARE_NAME "brcm/brcmfmac4330-sdio.bin"
608 #define BCM4330_NVRAM_NAME "brcm/brcmfmac4330-sdio.txt"
609 #define BCM4334_FIRMWARE_NAME "brcm/brcmfmac4334-sdio.bin"
610 #define BCM4334_NVRAM_NAME "brcm/brcmfmac4334-sdio.txt"
611 #define BCM4335_FIRMWARE_NAME "brcm/brcmfmac4335-sdio.bin"
612 #define BCM4335_NVRAM_NAME "brcm/brcmfmac4335-sdio.txt"
613 #define BCM43362_FIRMWARE_NAME "brcm/brcmfmac43362-sdio.bin"
614 #define BCM43362_NVRAM_NAME "brcm/brcmfmac43362-sdio.txt"
615 #define BCM4339_FIRMWARE_NAME "brcm/brcmfmac4339-sdio.bin"
616 #define BCM4339_NVRAM_NAME "brcm/brcmfmac4339-sdio.txt"
617 #define BCM4354_FIRMWARE_NAME "brcm/brcmfmac4354-sdio.bin"
618 #define BCM4354_NVRAM_NAME "brcm/brcmfmac4354-sdio.txt"
620 MODULE_FIRMWARE(BCM43143_FIRMWARE_NAME);
621 MODULE_FIRMWARE(BCM43143_NVRAM_NAME);
622 MODULE_FIRMWARE(BCM43241B0_FIRMWARE_NAME);
623 MODULE_FIRMWARE(BCM43241B0_NVRAM_NAME);
624 MODULE_FIRMWARE(BCM43241B4_FIRMWARE_NAME);
625 MODULE_FIRMWARE(BCM43241B4_NVRAM_NAME);
626 MODULE_FIRMWARE(BCM4329_FIRMWARE_NAME);
627 MODULE_FIRMWARE(BCM4329_NVRAM_NAME);
628 MODULE_FIRMWARE(BCM4330_FIRMWARE_NAME);
629 MODULE_FIRMWARE(BCM4330_NVRAM_NAME);
630 MODULE_FIRMWARE(BCM4334_FIRMWARE_NAME);
631 MODULE_FIRMWARE(BCM4334_NVRAM_NAME);
632 MODULE_FIRMWARE(BCM4335_FIRMWARE_NAME);
633 MODULE_FIRMWARE(BCM4335_NVRAM_NAME);
634 MODULE_FIRMWARE(BCM43362_FIRMWARE_NAME);
635 MODULE_FIRMWARE(BCM43362_NVRAM_NAME);
636 MODULE_FIRMWARE(BCM4339_FIRMWARE_NAME);
637 MODULE_FIRMWARE(BCM4339_NVRAM_NAME);
638 MODULE_FIRMWARE(BCM4354_FIRMWARE_NAME);
639 MODULE_FIRMWARE(BCM4354_NVRAM_NAME);
641 struct brcmf_firmware_names {
648 enum brcmf_firmware_type {
653 #define BRCMF_FIRMWARE_NVRAM(name) \
654 name ## _FIRMWARE_NAME, name ## _NVRAM_NAME
656 static const struct brcmf_firmware_names brcmf_fwname_data[] = {
657 { BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM43143) },
658 { BRCM_CC_43241_CHIP_ID, 0x0000001F, BRCMF_FIRMWARE_NVRAM(BCM43241B0) },
659 { BRCM_CC_43241_CHIP_ID, 0xFFFFFFE0, BRCMF_FIRMWARE_NVRAM(BCM43241B4) },
660 { BRCM_CC_4329_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4329) },
661 { BRCM_CC_4330_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4330) },
662 { BRCM_CC_4334_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4334) },
663 { BRCM_CC_4335_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4335) },
664 { BRCM_CC_43362_CHIP_ID, 0xFFFFFFFE, BRCMF_FIRMWARE_NVRAM(BCM43362) },
665 { BRCM_CC_4339_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4339) },
666 { BRCM_CC_4354_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4354) }
669 static int brcmf_sdio_get_fwnames(struct brcmf_chip *ci,
670 struct brcmf_sdio_dev *sdiodev)
675 for (i = 0; i < ARRAY_SIZE(brcmf_fwname_data); i++) {
676 if (brcmf_fwname_data[i].chipid == ci->chip &&
677 brcmf_fwname_data[i].revmsk & BIT(ci->chiprev))
681 if (i == ARRAY_SIZE(brcmf_fwname_data)) {
682 brcmf_err("Unknown chipid %d [%d]\n", ci->chip, ci->chiprev);
686 /* check if firmware path is provided by module parameter */
687 if (brcmf_firmware_path[0] != '\0') {
688 strlcpy(sdiodev->fw_name, brcmf_firmware_path,
689 sizeof(sdiodev->fw_name));
690 strlcpy(sdiodev->nvram_name, brcmf_firmware_path,
691 sizeof(sdiodev->nvram_name));
693 end = brcmf_firmware_path[strlen(brcmf_firmware_path) - 1];
695 strlcat(sdiodev->fw_name, "/",
696 sizeof(sdiodev->fw_name));
697 strlcat(sdiodev->nvram_name, "/",
698 sizeof(sdiodev->nvram_name));
701 strlcat(sdiodev->fw_name, brcmf_fwname_data[i].bin,
702 sizeof(sdiodev->fw_name));
703 strlcat(sdiodev->nvram_name, brcmf_fwname_data[i].nv,
704 sizeof(sdiodev->nvram_name));
709 static void pkt_align(struct sk_buff *p, int len, int align)
712 datalign = (unsigned long)(p->data);
713 datalign = roundup(datalign, (align)) - datalign;
715 skb_pull(p, datalign);
719 /* To check if there's window offered */
720 static bool data_ok(struct brcmf_sdio *bus)
722 return (u8)(bus->tx_max - bus->tx_seq) != 0 &&
723 ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0;
727 * Reads a register in the SDIO hardware block. This block occupies a series of
728 * adresses on the 32 bit backplane bus.
730 static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset)
732 struct brcmf_core *core;
735 core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
736 *regvar = brcmf_sdiod_regrl(bus->sdiodev, core->base + offset, &ret);
741 static int w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset)
743 struct brcmf_core *core;
746 core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
747 brcmf_sdiod_regwl(bus->sdiodev, core->base + reg_offset, regval, &ret);
753 brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on)
755 u8 wr_val = 0, rd_val, cmp_val, bmask;
759 brcmf_dbg(TRACE, "Enter: on=%d\n", on);
761 wr_val = (on << SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT);
762 /* 1st KSO write goes to AOS wake up core if device is asleep */
763 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
767 /* device WAKEUP through KSO:
768 * write bit 0 & read back until
769 * both bits 0 (kso bit) & 1 (dev on status) are set
771 cmp_val = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK |
772 SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK;
774 usleep_range(2000, 3000);
776 /* Put device to sleep, turn off KSO */
778 /* only check for bit0, bit1(dev on status) may not
779 * get cleared right away
781 bmask = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK;
785 /* reliable KSO bit set/clr:
786 * the sdiod sleep write access is synced to PMU 32khz clk
787 * just one write attempt may fail,
788 * read it back until it matches written value
790 rd_val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
792 if (((rd_val & bmask) == cmp_val) && !err)
796 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
798 } while (try_cnt++ < MAX_KSO_ATTEMPTS);
801 brcmf_dbg(SDIO, "try_cnt=%d rd_val=0x%x err=%d\n", try_cnt,
804 if (try_cnt > MAX_KSO_ATTEMPTS)
805 brcmf_err("max tries: rd_val=0x%x err=%d\n", rd_val, err);
810 #define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE)
812 /* Turn backplane clock on or off */
813 static int brcmf_sdio_htclk(struct brcmf_sdio *bus, bool on, bool pendok)
816 u8 clkctl, clkreq, devctl;
817 unsigned long timeout;
819 brcmf_dbg(SDIO, "Enter\n");
823 if (bus->sr_enabled) {
824 bus->clkstate = (on ? CLK_AVAIL : CLK_SDONLY);
829 /* Request HT Avail */
831 bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ;
833 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
836 brcmf_err("HT Avail request error: %d\n", err);
840 /* Check current status */
841 clkctl = brcmf_sdiod_regrb(bus->sdiodev,
842 SBSDIO_FUNC1_CHIPCLKCSR, &err);
844 brcmf_err("HT Avail read error: %d\n", err);
848 /* Go to pending and await interrupt if appropriate */
849 if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) {
850 /* Allow only clock-available interrupt */
851 devctl = brcmf_sdiod_regrb(bus->sdiodev,
852 SBSDIO_DEVICE_CTL, &err);
854 brcmf_err("Devctl error setting CA: %d\n",
859 devctl |= SBSDIO_DEVCTL_CA_INT_ONLY;
860 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
862 brcmf_dbg(SDIO, "CLKCTL: set PENDING\n");
863 bus->clkstate = CLK_PENDING;
866 } else if (bus->clkstate == CLK_PENDING) {
867 /* Cancel CA-only interrupt filter */
868 devctl = brcmf_sdiod_regrb(bus->sdiodev,
869 SBSDIO_DEVICE_CTL, &err);
870 devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
871 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
875 /* Otherwise, wait here (polling) for HT Avail */
877 msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000);
878 while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) {
879 clkctl = brcmf_sdiod_regrb(bus->sdiodev,
880 SBSDIO_FUNC1_CHIPCLKCSR,
882 if (time_after(jiffies, timeout))
885 usleep_range(5000, 10000);
888 brcmf_err("HT Avail request error: %d\n", err);
891 if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) {
892 brcmf_err("HT Avail timeout (%d): clkctl 0x%02x\n",
893 PMU_MAX_TRANSITION_DLY, clkctl);
897 /* Mark clock available */
898 bus->clkstate = CLK_AVAIL;
899 brcmf_dbg(SDIO, "CLKCTL: turned ON\n");
902 if (!bus->alp_only) {
903 if (SBSDIO_ALPONLY(clkctl))
904 brcmf_err("HT Clock should be on\n");
906 #endif /* defined (DEBUG) */
911 if (bus->clkstate == CLK_PENDING) {
912 /* Cancel CA-only interrupt filter */
913 devctl = brcmf_sdiod_regrb(bus->sdiodev,
914 SBSDIO_DEVICE_CTL, &err);
915 devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
916 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
920 bus->clkstate = CLK_SDONLY;
921 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
923 brcmf_dbg(SDIO, "CLKCTL: turned OFF\n");
925 brcmf_err("Failed access turning clock off: %d\n",
933 /* Change idle/active SD state */
934 static int brcmf_sdio_sdclk(struct brcmf_sdio *bus, bool on)
936 brcmf_dbg(SDIO, "Enter\n");
939 bus->clkstate = CLK_SDONLY;
941 bus->clkstate = CLK_NONE;
946 /* Transition SD and backplane clock readiness */
947 static int brcmf_sdio_clkctl(struct brcmf_sdio *bus, uint target, bool pendok)
950 uint oldstate = bus->clkstate;
953 brcmf_dbg(SDIO, "Enter\n");
955 /* Early exit if we're already there */
956 if (bus->clkstate == target) {
957 if (target == CLK_AVAIL) {
958 brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
959 bus->activity = true;
966 /* Make sure SD clock is available */
967 if (bus->clkstate == CLK_NONE)
968 brcmf_sdio_sdclk(bus, true);
969 /* Now request HT Avail on the backplane */
970 brcmf_sdio_htclk(bus, true, pendok);
971 brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
972 bus->activity = true;
976 /* Remove HT request, or bring up SD clock */
977 if (bus->clkstate == CLK_NONE)
978 brcmf_sdio_sdclk(bus, true);
979 else if (bus->clkstate == CLK_AVAIL)
980 brcmf_sdio_htclk(bus, false, false);
982 brcmf_err("request for %d -> %d\n",
983 bus->clkstate, target);
984 brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
988 /* Make sure to remove HT request */
989 if (bus->clkstate == CLK_AVAIL)
990 brcmf_sdio_htclk(bus, false, false);
991 /* Now remove the SD clock */
992 brcmf_sdio_sdclk(bus, false);
993 brcmf_sdio_wd_timer(bus, 0);
997 brcmf_dbg(SDIO, "%d -> %d\n", oldstate, bus->clkstate);
1004 brcmf_sdio_bus_sleep(struct brcmf_sdio *bus, bool sleep, bool pendok)
1009 brcmf_dbg(SDIO, "Enter: request %s currently %s\n",
1010 (sleep ? "SLEEP" : "WAKE"),
1011 (bus->sleeping ? "SLEEP" : "WAKE"));
1013 /* If SR is enabled control bus state with KSO */
1014 if (bus->sr_enabled) {
1015 /* Done if we're already in the requested state */
1016 if (sleep == bus->sleeping)
1019 /* Going to sleep */
1021 /* Don't sleep if something is pending */
1022 if (atomic_read(&bus->intstatus) ||
1023 atomic_read(&bus->ipend) > 0 ||
1024 (!atomic_read(&bus->fcstate) &&
1025 brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) &&
1031 clkcsr = brcmf_sdiod_regrb(bus->sdiodev,
1032 SBSDIO_FUNC1_CHIPCLKCSR,
1034 if ((clkcsr & SBSDIO_CSR_MASK) == 0) {
1035 brcmf_dbg(SDIO, "no clock, set ALP\n");
1036 brcmf_sdiod_regwb(bus->sdiodev,
1037 SBSDIO_FUNC1_CHIPCLKCSR,
1038 SBSDIO_ALP_AVAIL_REQ, &err);
1040 err = brcmf_sdio_kso_control(bus, false);
1041 /* disable watchdog */
1043 brcmf_sdio_wd_timer(bus, 0);
1046 err = brcmf_sdio_kso_control(bus, true);
1050 bus->sleeping = sleep;
1051 brcmf_dbg(SDIO, "new state %s\n",
1052 (sleep ? "SLEEP" : "WAKE"));
1054 brcmf_err("error while changing bus sleep state %d\n",
1061 /* control clocks */
1063 if (!bus->sr_enabled)
1064 brcmf_sdio_clkctl(bus, CLK_NONE, pendok);
1066 brcmf_sdio_clkctl(bus, CLK_AVAIL, pendok);
1069 brcmf_dbg(SDIO, "Exit: err=%d\n", err);
1075 static inline bool brcmf_sdio_valid_shared_address(u32 addr)
1077 return !(addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff));
1080 static int brcmf_sdio_readshared(struct brcmf_sdio *bus,
1081 struct sdpcm_shared *sh)
1086 struct sdpcm_shared_le sh_le;
1089 shaddr = bus->ci->rambase + bus->ramsize - 4;
1092 * Read last word in socram to determine
1093 * address of sdpcm_shared structure
1095 sdio_claim_host(bus->sdiodev->func[1]);
1096 brcmf_sdio_bus_sleep(bus, false, false);
1097 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, (u8 *)&addr_le, 4);
1098 sdio_release_host(bus->sdiodev->func[1]);
1102 addr = le32_to_cpu(addr_le);
1104 brcmf_dbg(SDIO, "sdpcm_shared address 0x%08X\n", addr);
1107 * Check if addr is valid.
1108 * NVRAM length at the end of memory should have been overwritten.
1110 if (!brcmf_sdio_valid_shared_address(addr)) {
1111 brcmf_err("invalid sdpcm_shared address 0x%08X\n",
1116 /* Read hndrte_shared structure */
1117 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&sh_le,
1118 sizeof(struct sdpcm_shared_le));
1123 sh->flags = le32_to_cpu(sh_le.flags);
1124 sh->trap_addr = le32_to_cpu(sh_le.trap_addr);
1125 sh->assert_exp_addr = le32_to_cpu(sh_le.assert_exp_addr);
1126 sh->assert_file_addr = le32_to_cpu(sh_le.assert_file_addr);
1127 sh->assert_line = le32_to_cpu(sh_le.assert_line);
1128 sh->console_addr = le32_to_cpu(sh_le.console_addr);
1129 sh->msgtrace_addr = le32_to_cpu(sh_le.msgtrace_addr);
1131 if ((sh->flags & SDPCM_SHARED_VERSION_MASK) > SDPCM_SHARED_VERSION) {
1132 brcmf_err("sdpcm shared version unsupported: dhd %d dongle %d\n",
1133 SDPCM_SHARED_VERSION,
1134 sh->flags & SDPCM_SHARED_VERSION_MASK);
1141 static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus)
1143 struct sdpcm_shared sh;
1145 if (brcmf_sdio_readshared(bus, &sh) == 0)
1146 bus->console_addr = sh.console_addr;
1149 static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus)
1154 static u32 brcmf_sdio_hostmail(struct brcmf_sdio *bus)
1161 brcmf_dbg(SDIO, "Enter\n");
1163 /* Read mailbox data and ack that we did so */
1164 ret = r_sdreg32(bus, &hmb_data,
1165 offsetof(struct sdpcmd_regs, tohostmailboxdata));
1168 w_sdreg32(bus, SMB_INT_ACK,
1169 offsetof(struct sdpcmd_regs, tosbmailbox));
1170 bus->sdcnt.f1regdata += 2;
1172 /* Dongle recomposed rx frames, accept them again */
1173 if (hmb_data & HMB_DATA_NAKHANDLED) {
1174 brcmf_dbg(SDIO, "Dongle reports NAK handled, expect rtx of %d\n",
1177 brcmf_err("unexpected NAKHANDLED!\n");
1179 bus->rxskip = false;
1180 intstatus |= I_HMB_FRAME_IND;
1184 * DEVREADY does not occur with gSPI.
1186 if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) {
1188 (hmb_data & HMB_DATA_VERSION_MASK) >>
1189 HMB_DATA_VERSION_SHIFT;
1190 if (bus->sdpcm_ver != SDPCM_PROT_VERSION)
1191 brcmf_err("Version mismatch, dongle reports %d, "
1193 bus->sdpcm_ver, SDPCM_PROT_VERSION);
1195 brcmf_dbg(SDIO, "Dongle ready, protocol version %d\n",
1199 * Retrieve console state address now that firmware should have
1202 brcmf_sdio_get_console_addr(bus);
1206 * Flow Control has been moved into the RX headers and this out of band
1207 * method isn't used any more.
1208 * remaining backward compatible with older dongles.
1210 if (hmb_data & HMB_DATA_FC) {
1211 fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >>
1212 HMB_DATA_FCDATA_SHIFT;
1214 if (fcbits & ~bus->flowcontrol)
1215 bus->sdcnt.fc_xoff++;
1217 if (bus->flowcontrol & ~fcbits)
1218 bus->sdcnt.fc_xon++;
1220 bus->sdcnt.fc_rcvd++;
1221 bus->flowcontrol = fcbits;
1224 /* Shouldn't be any others */
1225 if (hmb_data & ~(HMB_DATA_DEVREADY |
1226 HMB_DATA_NAKHANDLED |
1229 HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK))
1230 brcmf_err("Unknown mailbox data content: 0x%02x\n",
1236 static void brcmf_sdio_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx)
1243 brcmf_err("%sterminate frame%s\n",
1244 abort ? "abort command, " : "",
1245 rtx ? ", send NAK" : "");
1248 brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2);
1250 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL,
1252 bus->sdcnt.f1regdata++;
1254 /* Wait until the packet has been flushed (device/FIFO stable) */
1255 for (lastrbc = retries = 0xffff; retries > 0; retries--) {
1256 hi = brcmf_sdiod_regrb(bus->sdiodev,
1257 SBSDIO_FUNC1_RFRAMEBCHI, &err);
1258 lo = brcmf_sdiod_regrb(bus->sdiodev,
1259 SBSDIO_FUNC1_RFRAMEBCLO, &err);
1260 bus->sdcnt.f1regdata += 2;
1262 if ((hi == 0) && (lo == 0))
1265 if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) {
1266 brcmf_err("count growing: last 0x%04x now 0x%04x\n",
1267 lastrbc, (hi << 8) + lo);
1269 lastrbc = (hi << 8) + lo;
1273 brcmf_err("count never zeroed: last 0x%04x\n", lastrbc);
1275 brcmf_dbg(SDIO, "flush took %d iterations\n", 0xffff - retries);
1279 err = w_sdreg32(bus, SMB_NAK,
1280 offsetof(struct sdpcmd_regs, tosbmailbox));
1282 bus->sdcnt.f1regdata++;
1287 /* Clear partial in any case */
1288 bus->cur_read.len = 0;
1291 static void brcmf_sdio_txfail(struct brcmf_sdio *bus)
1293 struct brcmf_sdio_dev *sdiodev = bus->sdiodev;
1296 /* On failure, abort the command and terminate the frame */
1297 brcmf_err("sdio error, abort command and terminate frame\n");
1298 bus->sdcnt.tx_sderrs++;
1300 brcmf_sdiod_abort(sdiodev, SDIO_FUNC_2);
1301 brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, NULL);
1302 bus->sdcnt.f1regdata++;
1304 for (i = 0; i < 3; i++) {
1305 hi = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCHI, NULL);
1306 lo = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCLO, NULL);
1307 bus->sdcnt.f1regdata += 2;
1308 if ((hi == 0) && (lo == 0))
1313 /* return total length of buffer chain */
1314 static uint brcmf_sdio_glom_len(struct brcmf_sdio *bus)
1320 skb_queue_walk(&bus->glom, p)
1325 static void brcmf_sdio_free_glom(struct brcmf_sdio *bus)
1327 struct sk_buff *cur, *next;
1329 skb_queue_walk_safe(&bus->glom, cur, next) {
1330 skb_unlink(cur, &bus->glom);
1331 brcmu_pkt_buf_free_skb(cur);
1336 * brcmfmac sdio bus specific header
1337 * This is the lowest layer header wrapped on the packets transmitted between
1338 * host and WiFi dongle which contains information needed for SDIO core and
1341 * It consists of 3 parts: hardware header, hardware extension header and
1343 * hardware header (frame tag) - 4 bytes
1344 * Byte 0~1: Frame length
1345 * Byte 2~3: Checksum, bit-wise inverse of frame length
1346 * hardware extension header - 8 bytes
1347 * Tx glom mode only, N/A for Rx or normal Tx
1348 * Byte 0~1: Packet length excluding hw frame tag
1350 * Byte 3: Frame flags, bit 0: last frame indication
1351 * Byte 4~5: Reserved
1352 * Byte 6~7: Tail padding length
1353 * software header - 8 bytes
1354 * Byte 0: Rx/Tx sequence number
1355 * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag
1356 * Byte 2: Length of next data frame, reserved for Tx
1357 * Byte 3: Data offset
1358 * Byte 4: Flow control bits, reserved for Tx
1359 * Byte 5: Maximum Sequence number allowed by firmware for Tx, N/A for Tx packet
1360 * Byte 6~7: Reserved
1362 #define SDPCM_HWHDR_LEN 4
1363 #define SDPCM_HWEXT_LEN 8
1364 #define SDPCM_SWHDR_LEN 8
1365 #define SDPCM_HDRLEN (SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN)
1366 /* software header */
1367 #define SDPCM_SEQ_MASK 0x000000ff
1368 #define SDPCM_SEQ_WRAP 256
1369 #define SDPCM_CHANNEL_MASK 0x00000f00
1370 #define SDPCM_CHANNEL_SHIFT 8
1371 #define SDPCM_CONTROL_CHANNEL 0 /* Control */
1372 #define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication */
1373 #define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv */
1374 #define SDPCM_GLOM_CHANNEL 3 /* Coalesced packets */
1375 #define SDPCM_TEST_CHANNEL 15 /* Test/debug packets */
1376 #define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80)
1377 #define SDPCM_NEXTLEN_MASK 0x00ff0000
1378 #define SDPCM_NEXTLEN_SHIFT 16
1379 #define SDPCM_DOFFSET_MASK 0xff000000
1380 #define SDPCM_DOFFSET_SHIFT 24
1381 #define SDPCM_FCMASK_MASK 0x000000ff
1382 #define SDPCM_WINDOW_MASK 0x0000ff00
1383 #define SDPCM_WINDOW_SHIFT 8
1385 static inline u8 brcmf_sdio_getdatoffset(u8 *swheader)
1388 hdrvalue = *(u32 *)swheader;
1389 return (u8)((hdrvalue & SDPCM_DOFFSET_MASK) >> SDPCM_DOFFSET_SHIFT);
1392 static int brcmf_sdio_hdparse(struct brcmf_sdio *bus, u8 *header,
1393 struct brcmf_sdio_hdrinfo *rd,
1394 enum brcmf_sdio_frmtype type)
1397 u8 rx_seq, fc, tx_seq_max;
1400 trace_brcmf_sdpcm_hdr(SDPCM_RX, header);
1403 len = get_unaligned_le16(header);
1404 checksum = get_unaligned_le16(header + sizeof(u16));
1405 /* All zero means no more to read */
1406 if (!(len | checksum)) {
1407 bus->rxpending = false;
1410 if ((u16)(~(len ^ checksum))) {
1411 brcmf_err("HW header checksum error\n");
1412 bus->sdcnt.rx_badhdr++;
1413 brcmf_sdio_rxfail(bus, false, false);
1416 if (len < SDPCM_HDRLEN) {
1417 brcmf_err("HW header length error\n");
1420 if (type == BRCMF_SDIO_FT_SUPER &&
1421 (roundup(len, bus->blocksize) != rd->len)) {
1422 brcmf_err("HW superframe header length error\n");
1425 if (type == BRCMF_SDIO_FT_SUB && len > rd->len) {
1426 brcmf_err("HW subframe header length error\n");
1431 /* software header */
1432 header += SDPCM_HWHDR_LEN;
1433 swheader = le32_to_cpu(*(__le32 *)header);
1434 if (type == BRCMF_SDIO_FT_SUPER && SDPCM_GLOMDESC(header)) {
1435 brcmf_err("Glom descriptor found in superframe head\n");
1439 rx_seq = (u8)(swheader & SDPCM_SEQ_MASK);
1440 rd->channel = (swheader & SDPCM_CHANNEL_MASK) >> SDPCM_CHANNEL_SHIFT;
1441 if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL &&
1442 type != BRCMF_SDIO_FT_SUPER) {
1443 brcmf_err("HW header length too long\n");
1444 bus->sdcnt.rx_toolong++;
1445 brcmf_sdio_rxfail(bus, false, false);
1449 if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) {
1450 brcmf_err("Wrong channel for superframe\n");
1454 if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL &&
1455 rd->channel != SDPCM_EVENT_CHANNEL) {
1456 brcmf_err("Wrong channel for subframe\n");
1460 rd->dat_offset = brcmf_sdio_getdatoffset(header);
1461 if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) {
1462 brcmf_err("seq %d: bad data offset\n", rx_seq);
1463 bus->sdcnt.rx_badhdr++;
1464 brcmf_sdio_rxfail(bus, false, false);
1468 if (rd->seq_num != rx_seq) {
1469 brcmf_err("seq %d: sequence number error, expect %d\n",
1470 rx_seq, rd->seq_num);
1471 bus->sdcnt.rx_badseq++;
1472 rd->seq_num = rx_seq;
1474 /* no need to check the reset for subframe */
1475 if (type == BRCMF_SDIO_FT_SUB)
1477 rd->len_nxtfrm = (swheader & SDPCM_NEXTLEN_MASK) >> SDPCM_NEXTLEN_SHIFT;
1478 if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) {
1479 /* only warm for NON glom packet */
1480 if (rd->channel != SDPCM_GLOM_CHANNEL)
1481 brcmf_err("seq %d: next length error\n", rx_seq);
1484 swheader = le32_to_cpu(*(__le32 *)(header + 4));
1485 fc = swheader & SDPCM_FCMASK_MASK;
1486 if (bus->flowcontrol != fc) {
1487 if (~bus->flowcontrol & fc)
1488 bus->sdcnt.fc_xoff++;
1489 if (bus->flowcontrol & ~fc)
1490 bus->sdcnt.fc_xon++;
1491 bus->sdcnt.fc_rcvd++;
1492 bus->flowcontrol = fc;
1494 tx_seq_max = (swheader & SDPCM_WINDOW_MASK) >> SDPCM_WINDOW_SHIFT;
1495 if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) {
1496 brcmf_err("seq %d: max tx seq number error\n", rx_seq);
1497 tx_seq_max = bus->tx_seq + 2;
1499 bus->tx_max = tx_seq_max;
1504 static inline void brcmf_sdio_update_hwhdr(u8 *header, u16 frm_length)
1506 *(__le16 *)header = cpu_to_le16(frm_length);
1507 *(((__le16 *)header) + 1) = cpu_to_le16(~frm_length);
1510 static void brcmf_sdio_hdpack(struct brcmf_sdio *bus, u8 *header,
1511 struct brcmf_sdio_hdrinfo *hd_info)
1516 brcmf_sdio_update_hwhdr(header, hd_info->len);
1517 hdr_offset = SDPCM_HWHDR_LEN;
1520 hdrval = (hd_info->len - hdr_offset) | (hd_info->lastfrm << 24);
1521 *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval);
1522 hdrval = (u16)hd_info->tail_pad << 16;
1523 *(((__le32 *)(header + hdr_offset)) + 1) = cpu_to_le32(hdrval);
1524 hdr_offset += SDPCM_HWEXT_LEN;
1527 hdrval = hd_info->seq_num;
1528 hdrval |= (hd_info->channel << SDPCM_CHANNEL_SHIFT) &
1530 hdrval |= (hd_info->dat_offset << SDPCM_DOFFSET_SHIFT) &
1532 *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval);
1533 *(((__le32 *)(header + hdr_offset)) + 1) = 0;
1534 trace_brcmf_sdpcm_hdr(SDPCM_TX + !!(bus->txglom), header);
1537 static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq)
1542 struct sk_buff *pfirst, *pnext;
1547 struct brcmf_sdio_hdrinfo rd_new;
1549 /* If packets, issue read(s) and send up packet chain */
1550 /* Return sequence numbers consumed? */
1552 brcmf_dbg(SDIO, "start: glomd %p glom %p\n",
1553 bus->glomd, skb_peek(&bus->glom));
1555 /* If there's a descriptor, generate the packet chain */
1557 pfirst = pnext = NULL;
1558 dlen = (u16) (bus->glomd->len);
1559 dptr = bus->glomd->data;
1560 if (!dlen || (dlen & 1)) {
1561 brcmf_err("bad glomd len(%d), ignore descriptor\n",
1566 for (totlen = num = 0; dlen; num++) {
1567 /* Get (and move past) next length */
1568 sublen = get_unaligned_le16(dptr);
1569 dlen -= sizeof(u16);
1570 dptr += sizeof(u16);
1571 if ((sublen < SDPCM_HDRLEN) ||
1572 ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) {
1573 brcmf_err("descriptor len %d bad: %d\n",
1578 if (sublen % bus->sgentry_align) {
1579 brcmf_err("sublen %d not multiple of %d\n",
1580 sublen, bus->sgentry_align);
1584 /* For last frame, adjust read len so total
1585 is a block multiple */
1588 (roundup(totlen, bus->blocksize) - totlen);
1589 totlen = roundup(totlen, bus->blocksize);
1592 /* Allocate/chain packet for next subframe */
1593 pnext = brcmu_pkt_buf_get_skb(sublen + bus->sgentry_align);
1594 if (pnext == NULL) {
1595 brcmf_err("bcm_pkt_buf_get_skb failed, num %d len %d\n",
1599 skb_queue_tail(&bus->glom, pnext);
1601 /* Adhere to start alignment requirements */
1602 pkt_align(pnext, sublen, bus->sgentry_align);
1605 /* If all allocations succeeded, save packet chain
1608 brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n",
1610 if (BRCMF_GLOM_ON() && bus->cur_read.len &&
1611 totlen != bus->cur_read.len) {
1612 brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n",
1613 bus->cur_read.len, totlen, rxseq);
1615 pfirst = pnext = NULL;
1617 brcmf_sdio_free_glom(bus);
1621 /* Done with descriptor packet */
1622 brcmu_pkt_buf_free_skb(bus->glomd);
1624 bus->cur_read.len = 0;
1627 /* Ok -- either we just generated a packet chain,
1628 or had one from before */
1629 if (!skb_queue_empty(&bus->glom)) {
1630 if (BRCMF_GLOM_ON()) {
1631 brcmf_dbg(GLOM, "try superframe read, packet chain:\n");
1632 skb_queue_walk(&bus->glom, pnext) {
1633 brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n",
1634 pnext, (u8 *) (pnext->data),
1635 pnext->len, pnext->len);
1639 pfirst = skb_peek(&bus->glom);
1640 dlen = (u16) brcmf_sdio_glom_len(bus);
1642 /* Do an SDIO read for the superframe. Configurable iovar to
1643 * read directly into the chained packet, or allocate a large
1644 * packet and and copy into the chain.
1646 sdio_claim_host(bus->sdiodev->func[1]);
1647 errcode = brcmf_sdiod_recv_chain(bus->sdiodev,
1649 sdio_release_host(bus->sdiodev->func[1]);
1650 bus->sdcnt.f2rxdata++;
1652 /* On failure, kill the superframe, allow a couple retries */
1654 brcmf_err("glom read of %d bytes failed: %d\n",
1657 sdio_claim_host(bus->sdiodev->func[1]);
1658 if (bus->glomerr++ < 3) {
1659 brcmf_sdio_rxfail(bus, true, true);
1662 brcmf_sdio_rxfail(bus, true, false);
1663 bus->sdcnt.rxglomfail++;
1664 brcmf_sdio_free_glom(bus);
1666 sdio_release_host(bus->sdiodev->func[1]);
1670 brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
1671 pfirst->data, min_t(int, pfirst->len, 48),
1674 rd_new.seq_num = rxseq;
1676 sdio_claim_host(bus->sdiodev->func[1]);
1677 errcode = brcmf_sdio_hdparse(bus, pfirst->data, &rd_new,
1678 BRCMF_SDIO_FT_SUPER);
1679 sdio_release_host(bus->sdiodev->func[1]);
1680 bus->cur_read.len = rd_new.len_nxtfrm << 4;
1682 /* Remove superframe header, remember offset */
1683 skb_pull(pfirst, rd_new.dat_offset);
1684 sfdoff = rd_new.dat_offset;
1687 /* Validate all the subframe headers */
1688 skb_queue_walk(&bus->glom, pnext) {
1689 /* leave when invalid subframe is found */
1693 rd_new.len = pnext->len;
1694 rd_new.seq_num = rxseq++;
1695 sdio_claim_host(bus->sdiodev->func[1]);
1696 errcode = brcmf_sdio_hdparse(bus, pnext->data, &rd_new,
1698 sdio_release_host(bus->sdiodev->func[1]);
1699 brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
1700 pnext->data, 32, "subframe:\n");
1706 /* Terminate frame on error, request
1708 sdio_claim_host(bus->sdiodev->func[1]);
1709 if (bus->glomerr++ < 3) {
1710 /* Restore superframe header space */
1711 skb_push(pfirst, sfdoff);
1712 brcmf_sdio_rxfail(bus, true, true);
1715 brcmf_sdio_rxfail(bus, true, false);
1716 bus->sdcnt.rxglomfail++;
1717 brcmf_sdio_free_glom(bus);
1719 sdio_release_host(bus->sdiodev->func[1]);
1720 bus->cur_read.len = 0;
1724 /* Basic SD framing looks ok - process each packet (header) */
1726 skb_queue_walk_safe(&bus->glom, pfirst, pnext) {
1727 dptr = (u8 *) (pfirst->data);
1728 sublen = get_unaligned_le16(dptr);
1729 doff = brcmf_sdio_getdatoffset(&dptr[SDPCM_HWHDR_LEN]);
1731 brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
1733 "Rx Subframe Data:\n");
1735 __skb_trim(pfirst, sublen);
1736 skb_pull(pfirst, doff);
1738 if (pfirst->len == 0) {
1739 skb_unlink(pfirst, &bus->glom);
1740 brcmu_pkt_buf_free_skb(pfirst);
1744 brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
1746 min_t(int, pfirst->len, 32),
1747 "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n",
1748 bus->glom.qlen, pfirst, pfirst->data,
1749 pfirst->len, pfirst->next,
1751 skb_unlink(pfirst, &bus->glom);
1752 brcmf_rx_frame(bus->sdiodev->dev, pfirst);
1753 bus->sdcnt.rxglompkts++;
1756 bus->sdcnt.rxglomframes++;
1761 static int brcmf_sdio_dcmd_resp_wait(struct brcmf_sdio *bus, uint *condition,
1764 DECLARE_WAITQUEUE(wait, current);
1765 int timeout = msecs_to_jiffies(DCMD_RESP_TIMEOUT);
1767 /* Wait until control frame is available */
1768 add_wait_queue(&bus->dcmd_resp_wait, &wait);
1769 set_current_state(TASK_INTERRUPTIBLE);
1771 while (!(*condition) && (!signal_pending(current) && timeout))
1772 timeout = schedule_timeout(timeout);
1774 if (signal_pending(current))
1777 set_current_state(TASK_RUNNING);
1778 remove_wait_queue(&bus->dcmd_resp_wait, &wait);
1783 static int brcmf_sdio_dcmd_resp_wake(struct brcmf_sdio *bus)
1785 if (waitqueue_active(&bus->dcmd_resp_wait))
1786 wake_up_interruptible(&bus->dcmd_resp_wait);
1791 brcmf_sdio_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff)
1794 u8 *buf = NULL, *rbuf;
1797 brcmf_dbg(TRACE, "Enter\n");
1800 buf = vzalloc(bus->rxblen);
1805 pad = ((unsigned long)rbuf % bus->head_align);
1807 rbuf += (bus->head_align - pad);
1809 /* Copy the already-read portion over */
1810 memcpy(buf, hdr, BRCMF_FIRSTREAD);
1811 if (len <= BRCMF_FIRSTREAD)
1814 /* Raise rdlen to next SDIO block to avoid tail command */
1815 rdlen = len - BRCMF_FIRSTREAD;
1816 if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) {
1817 pad = bus->blocksize - (rdlen % bus->blocksize);
1818 if ((pad <= bus->roundup) && (pad < bus->blocksize) &&
1819 ((len + pad) < bus->sdiodev->bus_if->maxctl))
1821 } else if (rdlen % bus->head_align) {
1822 rdlen += bus->head_align - (rdlen % bus->head_align);
1825 /* Drop if the read is too big or it exceeds our maximum */
1826 if ((rdlen + BRCMF_FIRSTREAD) > bus->sdiodev->bus_if->maxctl) {
1827 brcmf_err("%d-byte control read exceeds %d-byte buffer\n",
1828 rdlen, bus->sdiodev->bus_if->maxctl);
1829 brcmf_sdio_rxfail(bus, false, false);
1833 if ((len - doff) > bus->sdiodev->bus_if->maxctl) {
1834 brcmf_err("%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n",
1835 len, len - doff, bus->sdiodev->bus_if->maxctl);
1836 bus->sdcnt.rx_toolong++;
1837 brcmf_sdio_rxfail(bus, false, false);
1841 /* Read remain of frame body */
1842 sdret = brcmf_sdiod_recv_buf(bus->sdiodev, rbuf, rdlen);
1843 bus->sdcnt.f2rxdata++;
1845 /* Control frame failures need retransmission */
1847 brcmf_err("read %d control bytes failed: %d\n",
1849 bus->sdcnt.rxc_errors++;
1850 brcmf_sdio_rxfail(bus, true, true);
1853 memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen);
1857 brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(),
1858 buf, len, "RxCtrl:\n");
1860 /* Point to valid data and indicate its length */
1861 spin_lock_bh(&bus->rxctl_lock);
1863 brcmf_err("last control frame is being processed.\n");
1864 spin_unlock_bh(&bus->rxctl_lock);
1868 bus->rxctl = buf + doff;
1869 bus->rxctl_orig = buf;
1870 bus->rxlen = len - doff;
1871 spin_unlock_bh(&bus->rxctl_lock);
1874 /* Awake any waiters */
1875 brcmf_sdio_dcmd_resp_wake(bus);
1878 /* Pad read to blocksize for efficiency */
1879 static void brcmf_sdio_pad(struct brcmf_sdio *bus, u16 *pad, u16 *rdlen)
1881 if (bus->roundup && bus->blocksize && *rdlen > bus->blocksize) {
1882 *pad = bus->blocksize - (*rdlen % bus->blocksize);
1883 if (*pad <= bus->roundup && *pad < bus->blocksize &&
1884 *rdlen + *pad + BRCMF_FIRSTREAD < MAX_RX_DATASZ)
1886 } else if (*rdlen % bus->head_align) {
1887 *rdlen += bus->head_align - (*rdlen % bus->head_align);
1891 static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
1893 struct sk_buff *pkt; /* Packet for event or data frames */
1894 u16 pad; /* Number of pad bytes to read */
1895 uint rxleft = 0; /* Remaining number of frames allowed */
1896 int ret; /* Return code from calls */
1897 uint rxcount = 0; /* Total frames read */
1898 struct brcmf_sdio_hdrinfo *rd = &bus->cur_read, rd_new;
1901 brcmf_dbg(TRACE, "Enter\n");
1903 /* Not finished unless we encounter no more frames indication */
1904 bus->rxpending = true;
1906 for (rd->seq_num = bus->rx_seq, rxleft = maxframes;
1907 !bus->rxskip && rxleft && brcmf_bus_ready(bus->sdiodev->bus_if);
1908 rd->seq_num++, rxleft--) {
1910 /* Handle glomming separately */
1911 if (bus->glomd || !skb_queue_empty(&bus->glom)) {
1913 brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n",
1914 bus->glomd, skb_peek(&bus->glom));
1915 cnt = brcmf_sdio_rxglom(bus, rd->seq_num);
1916 brcmf_dbg(GLOM, "rxglom returned %d\n", cnt);
1917 rd->seq_num += cnt - 1;
1918 rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1;
1922 rd->len_left = rd->len;
1923 /* read header first for unknow frame length */
1924 sdio_claim_host(bus->sdiodev->func[1]);
1926 ret = brcmf_sdiod_recv_buf(bus->sdiodev,
1927 bus->rxhdr, BRCMF_FIRSTREAD);
1928 bus->sdcnt.f2rxhdrs++;
1930 brcmf_err("RXHEADER FAILED: %d\n",
1932 bus->sdcnt.rx_hdrfail++;
1933 brcmf_sdio_rxfail(bus, true, true);
1934 sdio_release_host(bus->sdiodev->func[1]);
1938 brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(),
1939 bus->rxhdr, SDPCM_HDRLEN,
1942 if (brcmf_sdio_hdparse(bus, bus->rxhdr, rd,
1943 BRCMF_SDIO_FT_NORMAL)) {
1944 sdio_release_host(bus->sdiodev->func[1]);
1945 if (!bus->rxpending)
1951 if (rd->channel == SDPCM_CONTROL_CHANNEL) {
1952 brcmf_sdio_read_control(bus, bus->rxhdr,
1955 /* prepare the descriptor for the next read */
1956 rd->len = rd->len_nxtfrm << 4;
1958 /* treat all packet as event if we don't know */
1959 rd->channel = SDPCM_EVENT_CHANNEL;
1960 sdio_release_host(bus->sdiodev->func[1]);
1963 rd->len_left = rd->len > BRCMF_FIRSTREAD ?
1964 rd->len - BRCMF_FIRSTREAD : 0;
1965 head_read = BRCMF_FIRSTREAD;
1968 brcmf_sdio_pad(bus, &pad, &rd->len_left);
1970 pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read +
1973 /* Give up on data, request rtx of events */
1974 brcmf_err("brcmu_pkt_buf_get_skb failed\n");
1975 brcmf_sdio_rxfail(bus, false,
1976 RETRYCHAN(rd->channel));
1977 sdio_release_host(bus->sdiodev->func[1]);
1980 skb_pull(pkt, head_read);
1981 pkt_align(pkt, rd->len_left, bus->head_align);
1983 ret = brcmf_sdiod_recv_pkt(bus->sdiodev, pkt);
1984 bus->sdcnt.f2rxdata++;
1985 sdio_release_host(bus->sdiodev->func[1]);
1988 brcmf_err("read %d bytes from channel %d failed: %d\n",
1989 rd->len, rd->channel, ret);
1990 brcmu_pkt_buf_free_skb(pkt);
1991 sdio_claim_host(bus->sdiodev->func[1]);
1992 brcmf_sdio_rxfail(bus, true,
1993 RETRYCHAN(rd->channel));
1994 sdio_release_host(bus->sdiodev->func[1]);
1999 skb_push(pkt, head_read);
2000 memcpy(pkt->data, bus->rxhdr, head_read);
2003 memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN);
2004 rd_new.seq_num = rd->seq_num;
2005 sdio_claim_host(bus->sdiodev->func[1]);
2006 if (brcmf_sdio_hdparse(bus, bus->rxhdr, &rd_new,
2007 BRCMF_SDIO_FT_NORMAL)) {
2009 brcmu_pkt_buf_free_skb(pkt);
2011 bus->sdcnt.rx_readahead_cnt++;
2012 if (rd->len != roundup(rd_new.len, 16)) {
2013 brcmf_err("frame length mismatch:read %d, should be %d\n",
2015 roundup(rd_new.len, 16) >> 4);
2017 brcmf_sdio_rxfail(bus, true, true);
2018 sdio_release_host(bus->sdiodev->func[1]);
2019 brcmu_pkt_buf_free_skb(pkt);
2022 sdio_release_host(bus->sdiodev->func[1]);
2023 rd->len_nxtfrm = rd_new.len_nxtfrm;
2024 rd->channel = rd_new.channel;
2025 rd->dat_offset = rd_new.dat_offset;
2027 brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() &&
2030 bus->rxhdr, SDPCM_HDRLEN,
2033 if (rd_new.channel == SDPCM_CONTROL_CHANNEL) {
2034 brcmf_err("readahead on control packet %d?\n",
2036 /* Force retry w/normal header read */
2038 sdio_claim_host(bus->sdiodev->func[1]);
2039 brcmf_sdio_rxfail(bus, false, true);
2040 sdio_release_host(bus->sdiodev->func[1]);
2041 brcmu_pkt_buf_free_skb(pkt);
2046 brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(),
2047 pkt->data, rd->len, "Rx Data:\n");
2049 /* Save superframe descriptor and allocate packet frame */
2050 if (rd->channel == SDPCM_GLOM_CHANNEL) {
2051 if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_HWHDR_LEN])) {
2052 brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n",
2054 brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
2057 __skb_trim(pkt, rd->len);
2058 skb_pull(pkt, SDPCM_HDRLEN);
2061 brcmf_err("%s: glom superframe w/o "
2062 "descriptor!\n", __func__);
2063 sdio_claim_host(bus->sdiodev->func[1]);
2064 brcmf_sdio_rxfail(bus, false, false);
2065 sdio_release_host(bus->sdiodev->func[1]);
2067 /* prepare the descriptor for the next read */
2068 rd->len = rd->len_nxtfrm << 4;
2070 /* treat all packet as event if we don't know */
2071 rd->channel = SDPCM_EVENT_CHANNEL;
2075 /* Fill in packet len and prio, deliver upward */
2076 __skb_trim(pkt, rd->len);
2077 skb_pull(pkt, rd->dat_offset);
2079 /* prepare the descriptor for the next read */
2080 rd->len = rd->len_nxtfrm << 4;
2082 /* treat all packet as event if we don't know */
2083 rd->channel = SDPCM_EVENT_CHANNEL;
2085 if (pkt->len == 0) {
2086 brcmu_pkt_buf_free_skb(pkt);
2090 brcmf_rx_frame(bus->sdiodev->dev, pkt);
2093 rxcount = maxframes - rxleft;
2094 /* Message if we hit the limit */
2096 brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes);
2098 brcmf_dbg(DATA, "processed %d frames\n", rxcount);
2099 /* Back off rxseq if awaiting rtx, update rx_seq */
2102 bus->rx_seq = rd->seq_num;
2108 brcmf_sdio_wait_event_wakeup(struct brcmf_sdio *bus)
2110 if (waitqueue_active(&bus->ctrl_wait))
2111 wake_up_interruptible(&bus->ctrl_wait);
2115 static int brcmf_sdio_txpkt_hdalign(struct brcmf_sdio *bus, struct sk_buff *pkt)
2120 dat_buf = (u8 *)(pkt->data);
2122 /* Check head padding */
2123 head_pad = ((unsigned long)dat_buf % bus->head_align);
2125 if (skb_headroom(pkt) < head_pad) {
2126 bus->sdiodev->bus_if->tx_realloc++;
2128 if (skb_cow(pkt, head_pad))
2131 skb_push(pkt, head_pad);
2132 dat_buf = (u8 *)(pkt->data);
2133 memset(dat_buf, 0, head_pad + bus->tx_hdrlen);
2139 * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for
2142 /* flag marking a dummy skb added for DMA alignment requirement */
2143 #define ALIGN_SKB_FLAG 0x8000
2144 /* bit mask of data length chopped from the previous packet */
2145 #define ALIGN_SKB_CHOP_LEN_MASK 0x7fff
2147 static int brcmf_sdio_txpkt_prep_sg(struct brcmf_sdio *bus,
2148 struct sk_buff_head *pktq,
2149 struct sk_buff *pkt, u16 total_len)
2151 struct brcmf_sdio_dev *sdiodev;
2152 struct sk_buff *pkt_pad;
2153 u16 tail_pad, tail_chop, chain_pad;
2154 unsigned int blksize;
2158 sdiodev = bus->sdiodev;
2159 blksize = sdiodev->func[SDIO_FUNC_2]->cur_blksize;
2160 /* sg entry alignment should be a divisor of block size */
2161 WARN_ON(blksize % bus->sgentry_align);
2163 /* Check tail padding */
2164 lastfrm = skb_queue_is_last(pktq, pkt);
2166 tail_chop = pkt->len % bus->sgentry_align;
2168 tail_pad = bus->sgentry_align - tail_chop;
2169 chain_pad = (total_len + tail_pad) % blksize;
2170 if (lastfrm && chain_pad)
2171 tail_pad += blksize - chain_pad;
2172 if (skb_tailroom(pkt) < tail_pad && pkt->len > blksize) {
2173 pkt_pad = brcmu_pkt_buf_get_skb(tail_pad + tail_chop +
2175 if (pkt_pad == NULL)
2177 ret = brcmf_sdio_txpkt_hdalign(bus, pkt_pad);
2178 if (unlikely(ret < 0)) {
2182 memcpy(pkt_pad->data,
2183 pkt->data + pkt->len - tail_chop,
2185 *(u16 *)(pkt_pad->cb) = ALIGN_SKB_FLAG + tail_chop;
2186 skb_trim(pkt, pkt->len - tail_chop);
2187 skb_trim(pkt_pad, tail_pad + tail_chop);
2188 __skb_queue_after(pktq, pkt, pkt_pad);
2190 ntail = pkt->data_len + tail_pad -
2191 (pkt->end - pkt->tail);
2192 if (skb_cloned(pkt) || ntail > 0)
2193 if (pskb_expand_head(pkt, 0, ntail, GFP_ATOMIC))
2195 if (skb_linearize(pkt))
2197 __skb_put(pkt, tail_pad);
2204 * brcmf_sdio_txpkt_prep - packet preparation for transmit
2205 * @bus: brcmf_sdio structure pointer
2206 * @pktq: packet list pointer
2207 * @chan: virtual channel to transmit the packet
2209 * Processes to be applied to the packet
2210 * - Align data buffer pointer
2211 * - Align data buffer length
2213 * Return: negative value if there is error
2216 brcmf_sdio_txpkt_prep(struct brcmf_sdio *bus, struct sk_buff_head *pktq,
2219 u16 head_pad, total_len;
2220 struct sk_buff *pkt_next;
2223 struct brcmf_sdio_hdrinfo hd_info = {0};
2225 txseq = bus->tx_seq;
2227 skb_queue_walk(pktq, pkt_next) {
2228 /* alignment packet inserted in previous
2229 * loop cycle can be skipped as it is
2230 * already properly aligned and does not
2231 * need an sdpcm header.
2233 if (*(u16 *)(pkt_next->cb) & ALIGN_SKB_FLAG)
2236 /* align packet data pointer */
2237 ret = brcmf_sdio_txpkt_hdalign(bus, pkt_next);
2240 head_pad = (u16)ret;
2242 memset(pkt_next->data + bus->tx_hdrlen, 0, head_pad);
2244 total_len += pkt_next->len;
2246 hd_info.len = pkt_next->len;
2247 hd_info.lastfrm = skb_queue_is_last(pktq, pkt_next);
2248 if (bus->txglom && pktq->qlen > 1) {
2249 ret = brcmf_sdio_txpkt_prep_sg(bus, pktq,
2250 pkt_next, total_len);
2253 hd_info.tail_pad = (u16)ret;
2254 total_len += (u16)ret;
2257 hd_info.channel = chan;
2258 hd_info.dat_offset = head_pad + bus->tx_hdrlen;
2259 hd_info.seq_num = txseq++;
2261 /* Now fill the header */
2262 brcmf_sdio_hdpack(bus, pkt_next->data, &hd_info);
2264 if (BRCMF_BYTES_ON() &&
2265 ((BRCMF_CTL_ON() && chan == SDPCM_CONTROL_CHANNEL) ||
2266 (BRCMF_DATA_ON() && chan != SDPCM_CONTROL_CHANNEL)))
2267 brcmf_dbg_hex_dump(true, pkt_next->data, hd_info.len,
2269 else if (BRCMF_HDRS_ON())
2270 brcmf_dbg_hex_dump(true, pkt_next->data,
2271 head_pad + bus->tx_hdrlen,
2274 /* Hardware length tag of the first packet should be total
2275 * length of the chain (including padding)
2278 brcmf_sdio_update_hwhdr(pktq->next->data, total_len);
2283 * brcmf_sdio_txpkt_postp - packet post processing for transmit
2284 * @bus: brcmf_sdio structure pointer
2285 * @pktq: packet list pointer
2287 * Processes to be applied to the packet
2288 * - Remove head padding
2289 * - Remove tail padding
2292 brcmf_sdio_txpkt_postp(struct brcmf_sdio *bus, struct sk_buff_head *pktq)
2297 u16 dummy_flags, chop_len;
2298 struct sk_buff *pkt_next, *tmp, *pkt_prev;
2300 skb_queue_walk_safe(pktq, pkt_next, tmp) {
2301 dummy_flags = *(u16 *)(pkt_next->cb);
2302 if (dummy_flags & ALIGN_SKB_FLAG) {
2303 chop_len = dummy_flags & ALIGN_SKB_CHOP_LEN_MASK;
2305 pkt_prev = pkt_next->prev;
2306 skb_put(pkt_prev, chop_len);
2308 __skb_unlink(pkt_next, pktq);
2309 brcmu_pkt_buf_free_skb(pkt_next);
2311 hdr = pkt_next->data + bus->tx_hdrlen - SDPCM_SWHDR_LEN;
2312 dat_offset = le32_to_cpu(*(__le32 *)hdr);
2313 dat_offset = (dat_offset & SDPCM_DOFFSET_MASK) >>
2314 SDPCM_DOFFSET_SHIFT;
2315 skb_pull(pkt_next, dat_offset);
2317 tail_pad = le16_to_cpu(*(__le16 *)(hdr - 2));
2318 skb_trim(pkt_next, pkt_next->len - tail_pad);
2324 /* Writes a HW/SW header into the packet and sends it. */
2325 /* Assumes: (a) header space already there, (b) caller holds lock */
2326 static int brcmf_sdio_txpkt(struct brcmf_sdio *bus, struct sk_buff_head *pktq,
2330 struct sk_buff *pkt_next, *tmp;
2332 brcmf_dbg(TRACE, "Enter\n");
2334 ret = brcmf_sdio_txpkt_prep(bus, pktq, chan);
2338 sdio_claim_host(bus->sdiodev->func[1]);
2339 ret = brcmf_sdiod_send_pkt(bus->sdiodev, pktq);
2340 bus->sdcnt.f2txdata++;
2343 brcmf_sdio_txfail(bus);
2345 sdio_release_host(bus->sdiodev->func[1]);
2348 brcmf_sdio_txpkt_postp(bus, pktq);
2350 bus->tx_seq = (bus->tx_seq + pktq->qlen) % SDPCM_SEQ_WRAP;
2351 skb_queue_walk_safe(pktq, pkt_next, tmp) {
2352 __skb_unlink(pkt_next, pktq);
2353 brcmf_txcomplete(bus->sdiodev->dev, pkt_next, ret == 0);
2358 static uint brcmf_sdio_sendfromq(struct brcmf_sdio *bus, uint maxframes)
2360 struct sk_buff *pkt;
2361 struct sk_buff_head pktq;
2363 int ret = 0, prec_out, i;
2365 u8 tx_prec_map, pkt_num;
2367 brcmf_dbg(TRACE, "Enter\n");
2369 tx_prec_map = ~bus->flowcontrol;
2371 /* Send frames until the limit or some other event */
2372 for (cnt = 0; (cnt < maxframes) && data_ok(bus);) {
2374 if (down_interruptible(&bus->tx_seq_lock))
2377 pkt_num = min_t(u8, bus->tx_max - bus->tx_seq,
2378 bus->sdiodev->txglomsz);
2379 pkt_num = min_t(u32, pkt_num,
2380 brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol));
2381 __skb_queue_head_init(&pktq);
2382 spin_lock_bh(&bus->txq_lock);
2383 for (i = 0; i < pkt_num; i++) {
2384 pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map,
2388 __skb_queue_tail(&pktq, pkt);
2390 spin_unlock_bh(&bus->txq_lock);
2392 up(&bus->tx_seq_lock);
2396 ret = brcmf_sdio_txpkt(bus, &pktq, SDPCM_DATA_CHANNEL);
2397 up(&bus->tx_seq_lock);
2401 /* In poll mode, need to check for other events */
2403 /* Check device status, signal pending interrupt */
2404 sdio_claim_host(bus->sdiodev->func[1]);
2405 ret = r_sdreg32(bus, &intstatus,
2406 offsetof(struct sdpcmd_regs,
2408 sdio_release_host(bus->sdiodev->func[1]);
2409 bus->sdcnt.f2txdata++;
2412 if (intstatus & bus->hostintmask)
2413 atomic_set(&bus->ipend, 1);
2417 /* Deflow-control stack if needed */
2418 if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) &&
2419 bus->txoff && (pktq_len(&bus->txq) < TXLOW)) {
2421 brcmf_txflowblock(bus->sdiodev->dev, false);
2427 static int brcmf_sdio_tx_ctrlframe(struct brcmf_sdio *bus, u8 *frame, u16 len)
2432 struct brcmf_sdio_hdrinfo hd_info = {0};
2435 brcmf_dbg(TRACE, "Enter\n");
2437 /* Back the pointer to make room for bus header */
2438 frame -= bus->tx_hdrlen;
2439 len += bus->tx_hdrlen;
2441 /* Add alignment padding (optional for ctl frames) */
2442 doff = ((unsigned long)frame % bus->head_align);
2446 memset(frame + bus->tx_hdrlen, 0, doff);
2449 /* Round send length to next SDIO block */
2451 if (bus->roundup && bus->blocksize && (len > bus->blocksize)) {
2452 pad = bus->blocksize - (len % bus->blocksize);
2453 if ((pad > bus->roundup) || (pad >= bus->blocksize))
2455 } else if (len % bus->head_align) {
2456 pad = bus->head_align - (len % bus->head_align);
2460 hd_info.len = len - pad;
2461 hd_info.channel = SDPCM_CONTROL_CHANNEL;
2462 hd_info.dat_offset = doff + bus->tx_hdrlen;
2463 hd_info.seq_num = bus->tx_seq;
2464 hd_info.lastfrm = true;
2465 hd_info.tail_pad = pad;
2466 brcmf_sdio_hdpack(bus, frame, &hd_info);
2469 brcmf_sdio_update_hwhdr(frame, len);
2471 brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(),
2472 frame, len, "Tx Frame:\n");
2473 brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && BRCMF_CTL_ON()) &&
2475 frame, min_t(u16, len, 16), "TxHdr:\n");
2478 ret = brcmf_sdiod_send_buf(bus->sdiodev, frame, len);
2481 brcmf_sdio_txfail(bus);
2483 bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQ_WRAP;
2484 } while (ret < 0 && retries++ < TXRETRIES);
2489 static void brcmf_sdio_bus_stop(struct device *dev)
2491 u32 local_hostintmask;
2494 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
2495 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
2496 struct brcmf_sdio *bus = sdiodev->bus;
2498 brcmf_dbg(TRACE, "Enter\n");
2500 if (bus->watchdog_tsk) {
2501 send_sig(SIGTERM, bus->watchdog_tsk, 1);
2502 kthread_stop(bus->watchdog_tsk);
2503 bus->watchdog_tsk = NULL;
2506 if (bus_if->state == BRCMF_BUS_DOWN) {
2507 sdio_claim_host(sdiodev->func[1]);
2509 /* Enable clock for device interrupts */
2510 brcmf_sdio_bus_sleep(bus, false, false);
2512 /* Disable and clear interrupts at the chip level also */
2513 w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask));
2514 local_hostintmask = bus->hostintmask;
2515 bus->hostintmask = 0;
2517 /* Force backplane clocks to assure F2 interrupt propagates */
2518 saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
2521 brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
2522 (saveclk | SBSDIO_FORCE_HT), &err);
2524 brcmf_err("Failed to force clock for F2: err %d\n",
2527 /* Turn off the bus (F2), free any pending packets */
2528 brcmf_dbg(INTR, "disable SDIO interrupts\n");
2529 sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
2531 /* Clear any pending interrupts now that F2 is disabled */
2532 w_sdreg32(bus, local_hostintmask,
2533 offsetof(struct sdpcmd_regs, intstatus));
2535 sdio_release_host(sdiodev->func[1]);
2537 /* Clear the data packet queues */
2538 brcmu_pktq_flush(&bus->txq, true, NULL, NULL);
2540 /* Clear any held glomming stuff */
2542 brcmu_pkt_buf_free_skb(bus->glomd);
2543 brcmf_sdio_free_glom(bus);
2545 /* Clear rx control and wake any waiters */
2546 spin_lock_bh(&bus->rxctl_lock);
2548 spin_unlock_bh(&bus->rxctl_lock);
2549 brcmf_sdio_dcmd_resp_wake(bus);
2551 /* Reset some F2 state stuff */
2552 bus->rxskip = false;
2553 bus->tx_seq = bus->rx_seq = 0;
2556 static inline void brcmf_sdio_clrintr(struct brcmf_sdio *bus)
2558 unsigned long flags;
2560 if (bus->sdiodev->oob_irq_requested) {
2561 spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags);
2562 if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) {
2563 enable_irq(bus->sdiodev->pdata->oob_irq_nr);
2564 bus->sdiodev->irq_en = true;
2566 spin_unlock_irqrestore(&bus->sdiodev->irq_en_lock, flags);
2570 static void atomic_orr(int val, atomic_t *v)
2574 old_val = atomic_read(v);
2575 while (atomic_cmpxchg(v, old_val, val | old_val) != old_val)
2576 old_val = atomic_read(v);
2579 static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus)
2581 struct brcmf_core *buscore;
2586 buscore = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV);
2587 addr = buscore->base + offsetof(struct sdpcmd_regs, intstatus);
2589 val = brcmf_sdiod_regrl(bus->sdiodev, addr, &ret);
2590 bus->sdcnt.f1regdata++;
2594 val &= bus->hostintmask;
2595 atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE));
2597 /* Clear interrupts */
2599 brcmf_sdiod_regwl(bus->sdiodev, addr, val, &ret);
2600 bus->sdcnt.f1regdata++;
2601 atomic_orr(val, &bus->intstatus);
2607 static void brcmf_sdio_dpc(struct brcmf_sdio *bus)
2610 unsigned long intstatus;
2611 uint txlimit = bus->txbound; /* Tx frames to send before resched */
2612 uint framecnt; /* Temporary counter of tx/rx frames */
2615 brcmf_dbg(TRACE, "Enter\n");
2617 sdio_claim_host(bus->sdiodev->func[1]);
2619 /* If waiting for HTAVAIL, check status */
2620 if (!bus->sr_enabled && bus->clkstate == CLK_PENDING) {
2621 u8 clkctl, devctl = 0;
2624 /* Check for inconsistent device control */
2625 devctl = brcmf_sdiod_regrb(bus->sdiodev,
2626 SBSDIO_DEVICE_CTL, &err);
2629 /* Read CSR, if clock on switch to AVAIL, else ignore */
2630 clkctl = brcmf_sdiod_regrb(bus->sdiodev,
2631 SBSDIO_FUNC1_CHIPCLKCSR, &err);
2633 brcmf_dbg(SDIO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n",
2636 if (SBSDIO_HTAV(clkctl)) {
2637 devctl = brcmf_sdiod_regrb(bus->sdiodev,
2638 SBSDIO_DEVICE_CTL, &err);
2639 devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
2640 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
2642 bus->clkstate = CLK_AVAIL;
2646 /* Make sure backplane clock is on */
2647 brcmf_sdio_bus_sleep(bus, false, true);
2649 /* Pending interrupt indicates new device status */
2650 if (atomic_read(&bus->ipend) > 0) {
2651 atomic_set(&bus->ipend, 0);
2652 err = brcmf_sdio_intr_rstatus(bus);
2655 /* Start with leftover status bits */
2656 intstatus = atomic_xchg(&bus->intstatus, 0);
2658 /* Handle flow-control change: read new state in case our ack
2659 * crossed another change interrupt. If change still set, assume
2660 * FC ON for safety, let next loop through do the debounce.
2662 if (intstatus & I_HMB_FC_CHANGE) {
2663 intstatus &= ~I_HMB_FC_CHANGE;
2664 err = w_sdreg32(bus, I_HMB_FC_CHANGE,
2665 offsetof(struct sdpcmd_regs, intstatus));
2667 err = r_sdreg32(bus, &newstatus,
2668 offsetof(struct sdpcmd_regs, intstatus));
2669 bus->sdcnt.f1regdata += 2;
2670 atomic_set(&bus->fcstate,
2671 !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE)));
2672 intstatus |= (newstatus & bus->hostintmask);
2675 /* Handle host mailbox indication */
2676 if (intstatus & I_HMB_HOST_INT) {
2677 intstatus &= ~I_HMB_HOST_INT;
2678 intstatus |= brcmf_sdio_hostmail(bus);
2681 sdio_release_host(bus->sdiodev->func[1]);
2683 /* Generally don't ask for these, can get CRC errors... */
2684 if (intstatus & I_WR_OOSYNC) {
2685 brcmf_err("Dongle reports WR_OOSYNC\n");
2686 intstatus &= ~I_WR_OOSYNC;
2689 if (intstatus & I_RD_OOSYNC) {
2690 brcmf_err("Dongle reports RD_OOSYNC\n");
2691 intstatus &= ~I_RD_OOSYNC;
2694 if (intstatus & I_SBINT) {
2695 brcmf_err("Dongle reports SBINT\n");
2696 intstatus &= ~I_SBINT;
2699 /* Would be active due to wake-wlan in gSPI */
2700 if (intstatus & I_CHIPACTIVE) {
2701 brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n");
2702 intstatus &= ~I_CHIPACTIVE;
2705 /* Ignore frame indications if rxskip is set */
2707 intstatus &= ~I_HMB_FRAME_IND;
2709 /* On frame indication, read available frames */
2710 if ((intstatus & I_HMB_FRAME_IND) && (bus->clkstate == CLK_AVAIL)) {
2711 brcmf_sdio_readframes(bus, bus->rxbound);
2712 if (!bus->rxpending)
2713 intstatus &= ~I_HMB_FRAME_IND;
2716 /* Keep still-pending events for next scheduling */
2718 atomic_orr(intstatus, &bus->intstatus);
2720 brcmf_sdio_clrintr(bus);
2722 if (bus->ctrl_frame_stat && (bus->clkstate == CLK_AVAIL) &&
2723 (down_interruptible(&bus->tx_seq_lock) == 0)) {
2725 sdio_claim_host(bus->sdiodev->func[1]);
2726 err = brcmf_sdio_tx_ctrlframe(bus, bus->ctrl_frame_buf,
2727 bus->ctrl_frame_len);
2728 sdio_release_host(bus->sdiodev->func[1]);
2730 bus->ctrl_frame_stat = false;
2731 brcmf_sdio_wait_event_wakeup(bus);
2733 up(&bus->tx_seq_lock);
2735 /* Send queued frames (limit 1 if rx may still be pending) */
2736 if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) &&
2737 brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit &&
2739 framecnt = bus->rxpending ? min(txlimit, bus->txminmax) :
2741 brcmf_sdio_sendfromq(bus, framecnt);
2744 if (!brcmf_bus_ready(bus->sdiodev->bus_if) || (err != 0)) {
2745 brcmf_err("failed backplane access over SDIO, halting operation\n");
2746 atomic_set(&bus->intstatus, 0);
2747 } else if (atomic_read(&bus->intstatus) ||
2748 atomic_read(&bus->ipend) > 0 ||
2749 (!atomic_read(&bus->fcstate) &&
2750 brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) &&
2752 atomic_inc(&bus->dpc_tskcnt);
2756 static struct pktq *brcmf_sdio_bus_gettxq(struct device *dev)
2758 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
2759 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
2760 struct brcmf_sdio *bus = sdiodev->bus;
2765 static int brcmf_sdio_bus_txdata(struct device *dev, struct sk_buff *pkt)
2769 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
2770 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
2771 struct brcmf_sdio *bus = sdiodev->bus;
2773 brcmf_dbg(TRACE, "Enter: pkt: data %p len %d\n", pkt->data, pkt->len);
2775 /* Add space for the header */
2776 skb_push(pkt, bus->tx_hdrlen);
2777 /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */
2779 prec = prio2prec((pkt->priority & PRIOMASK));
2781 /* Check for existing queue, current flow-control,
2782 pending event, or pending clock */
2783 brcmf_dbg(TRACE, "deferring pktq len %d\n", pktq_len(&bus->txq));
2784 bus->sdcnt.fcqueued++;
2786 /* Priority based enq */
2787 spin_lock_bh(&bus->txq_lock);
2788 /* reset bus_flags in packet cb */
2789 *(u16 *)(pkt->cb) = 0;
2790 if (!brcmf_c_prec_enq(bus->sdiodev->dev, &bus->txq, pkt, prec)) {
2791 skb_pull(pkt, bus->tx_hdrlen);
2792 brcmf_err("out of bus->txq !!!\n");
2798 if (pktq_len(&bus->txq) >= TXHI) {
2800 brcmf_txflowblock(bus->sdiodev->dev, true);
2802 spin_unlock_bh(&bus->txq_lock);
2805 if (pktq_plen(&bus->txq, prec) > qcount[prec])
2806 qcount[prec] = pktq_plen(&bus->txq, prec);
2809 if (atomic_read(&bus->dpc_tskcnt) == 0) {
2810 atomic_inc(&bus->dpc_tskcnt);
2811 queue_work(bus->brcmf_wq, &bus->datawork);
2818 #define CONSOLE_LINE_MAX 192
2820 static int brcmf_sdio_readconsole(struct brcmf_sdio *bus)
2822 struct brcmf_console *c = &bus->console;
2823 u8 line[CONSOLE_LINE_MAX], ch;
2827 /* Don't do anything until FWREADY updates console address */
2828 if (bus->console_addr == 0)
2831 /* Read console log struct */
2832 addr = bus->console_addr + offsetof(struct rte_console, log_le);
2833 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&c->log_le,
2838 /* Allocate console buffer (one time only) */
2839 if (c->buf == NULL) {
2840 c->bufsize = le32_to_cpu(c->log_le.buf_size);
2841 c->buf = kmalloc(c->bufsize, GFP_ATOMIC);
2846 idx = le32_to_cpu(c->log_le.idx);
2848 /* Protect against corrupt value */
2849 if (idx > c->bufsize)
2852 /* Skip reading the console buffer if the index pointer
2857 /* Read the console buffer */
2858 addr = le32_to_cpu(c->log_le.buf);
2859 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, c->buf, c->bufsize);
2863 while (c->last != idx) {
2864 for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) {
2865 if (c->last == idx) {
2866 /* This would output a partial line.
2868 * the buffer pointer and output this
2869 * line next time around.
2874 c->last = c->bufsize - n;
2877 ch = c->buf[c->last];
2878 c->last = (c->last + 1) % c->bufsize;
2885 if (line[n - 1] == '\r')
2888 pr_debug("CONSOLE: %s\n", line);
2898 brcmf_sdio_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
2900 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
2901 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
2902 struct brcmf_sdio *bus = sdiodev->bus;
2905 brcmf_dbg(TRACE, "Enter\n");
2907 if (down_interruptible(&bus->tx_seq_lock))
2910 if (!data_ok(bus)) {
2911 brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n",
2912 bus->tx_max, bus->tx_seq);
2913 up(&bus->tx_seq_lock);
2915 bus->ctrl_frame_buf = msg;
2916 bus->ctrl_frame_len = msglen;
2917 bus->ctrl_frame_stat = true;
2919 wait_event_interruptible_timeout(bus->ctrl_wait,
2920 !bus->ctrl_frame_stat,
2921 msecs_to_jiffies(2000));
2923 if (!bus->ctrl_frame_stat) {
2924 brcmf_dbg(SDIO, "ctrl_frame_stat == false\n");
2927 brcmf_dbg(SDIO, "ctrl_frame_stat == true\n");
2928 bus->ctrl_frame_stat = false;
2929 if (down_interruptible(&bus->tx_seq_lock))
2935 sdio_claim_host(bus->sdiodev->func[1]);
2936 brcmf_sdio_bus_sleep(bus, false, false);
2937 ret = brcmf_sdio_tx_ctrlframe(bus, msg, msglen);
2938 sdio_release_host(bus->sdiodev->func[1]);
2939 up(&bus->tx_seq_lock);
2943 bus->sdcnt.tx_ctlerrs++;
2945 bus->sdcnt.tx_ctlpkts++;
2947 return ret ? -EIO : 0;
2951 static int brcmf_sdio_dump_console(struct seq_file *seq, struct brcmf_sdio *bus,
2952 struct sdpcm_shared *sh)
2954 u32 addr, console_ptr, console_size, console_index;
2955 char *conbuf = NULL;
2959 /* obtain console information from device memory */
2960 addr = sh->console_addr + offsetof(struct rte_console, log_le);
2961 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
2962 (u8 *)&sh_val, sizeof(u32));
2965 console_ptr = le32_to_cpu(sh_val);
2967 addr = sh->console_addr + offsetof(struct rte_console, log_le.buf_size);
2968 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
2969 (u8 *)&sh_val, sizeof(u32));
2972 console_size = le32_to_cpu(sh_val);
2974 addr = sh->console_addr + offsetof(struct rte_console, log_le.idx);
2975 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr,
2976 (u8 *)&sh_val, sizeof(u32));
2979 console_index = le32_to_cpu(sh_val);
2981 /* allocate buffer for console data */
2982 if (console_size <= CONSOLE_BUFFER_MAX)
2983 conbuf = vzalloc(console_size+1);
2988 /* obtain the console data from device */
2989 conbuf[console_size] = '\0';
2990 rv = brcmf_sdiod_ramrw(bus->sdiodev, false, console_ptr, (u8 *)conbuf,
2995 rv = seq_write(seq, conbuf + console_index,
2996 console_size - console_index);
3000 if (console_index > 0)
3001 rv = seq_write(seq, conbuf, console_index - 1);
3008 static int brcmf_sdio_trap_info(struct seq_file *seq, struct brcmf_sdio *bus,
3009 struct sdpcm_shared *sh)
3012 struct brcmf_trap_info tr;
3014 if ((sh->flags & SDPCM_SHARED_TRAP) == 0) {
3015 brcmf_dbg(INFO, "no trap in firmware\n");
3019 error = brcmf_sdiod_ramrw(bus->sdiodev, false, sh->trap_addr, (u8 *)&tr,
3020 sizeof(struct brcmf_trap_info));
3025 "dongle trap info: type 0x%x @ epc 0x%08x\n"
3026 " cpsr 0x%08x spsr 0x%08x sp 0x%08x\n"
3027 " lr 0x%08x pc 0x%08x offset 0x%x\n"
3028 " r0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x\n"
3029 " r4 0x%08x r5 0x%08x r6 0x%08x r7 0x%08x\n",
3030 le32_to_cpu(tr.type), le32_to_cpu(tr.epc),
3031 le32_to_cpu(tr.cpsr), le32_to_cpu(tr.spsr),
3032 le32_to_cpu(tr.r13), le32_to_cpu(tr.r14),
3033 le32_to_cpu(tr.pc), sh->trap_addr,
3034 le32_to_cpu(tr.r0), le32_to_cpu(tr.r1),
3035 le32_to_cpu(tr.r2), le32_to_cpu(tr.r3),
3036 le32_to_cpu(tr.r4), le32_to_cpu(tr.r5),
3037 le32_to_cpu(tr.r6), le32_to_cpu(tr.r7));
3042 static int brcmf_sdio_assert_info(struct seq_file *seq, struct brcmf_sdio *bus,
3043 struct sdpcm_shared *sh)
3046 char file[80] = "?";
3047 char expr[80] = "<???>";
3049 if ((sh->flags & SDPCM_SHARED_ASSERT_BUILT) == 0) {
3050 brcmf_dbg(INFO, "firmware not built with -assert\n");
3052 } else if ((sh->flags & SDPCM_SHARED_ASSERT) == 0) {
3053 brcmf_dbg(INFO, "no assert in dongle\n");
3057 sdio_claim_host(bus->sdiodev->func[1]);
3058 if (sh->assert_file_addr != 0) {
3059 error = brcmf_sdiod_ramrw(bus->sdiodev, false,
3060 sh->assert_file_addr, (u8 *)file, 80);
3064 if (sh->assert_exp_addr != 0) {
3065 error = brcmf_sdiod_ramrw(bus->sdiodev, false,
3066 sh->assert_exp_addr, (u8 *)expr, 80);
3070 sdio_release_host(bus->sdiodev->func[1]);
3072 seq_printf(seq, "dongle assert: %s:%d: assert(%s)\n",
3073 file, sh->assert_line, expr);
3077 static int brcmf_sdio_checkdied(struct brcmf_sdio *bus)
3080 struct sdpcm_shared sh;
3082 error = brcmf_sdio_readshared(bus, &sh);
3087 if ((sh.flags & SDPCM_SHARED_ASSERT_BUILT) == 0)
3088 brcmf_dbg(INFO, "firmware not built with -assert\n");
3089 else if (sh.flags & SDPCM_SHARED_ASSERT)
3090 brcmf_err("assertion in dongle\n");
3092 if (sh.flags & SDPCM_SHARED_TRAP)
3093 brcmf_err("firmware trap in dongle\n");
3098 static int brcmf_sdio_died_dump(struct seq_file *seq, struct brcmf_sdio *bus)
3101 struct sdpcm_shared sh;
3103 error = brcmf_sdio_readshared(bus, &sh);
3107 error = brcmf_sdio_assert_info(seq, bus, &sh);
3111 error = brcmf_sdio_trap_info(seq, bus, &sh);
3115 error = brcmf_sdio_dump_console(seq, bus, &sh);
3121 static int brcmf_sdio_forensic_read(struct seq_file *seq, void *data)
3123 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
3124 struct brcmf_sdio *bus = bus_if->bus_priv.sdio->bus;
3126 return brcmf_sdio_died_dump(seq, bus);
3129 static int brcmf_debugfs_sdio_count_read(struct seq_file *seq, void *data)
3131 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
3132 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
3133 struct brcmf_sdio_count *sdcnt = &sdiodev->bus->sdcnt;
3136 "intrcount: %u\nlastintrs: %u\n"
3137 "pollcnt: %u\nregfails: %u\n"
3138 "tx_sderrs: %u\nfcqueued: %u\n"
3139 "rxrtx: %u\nrx_toolong: %u\n"
3140 "rxc_errors: %u\nrx_hdrfail: %u\n"
3141 "rx_badhdr: %u\nrx_badseq: %u\n"
3142 "fc_rcvd: %u\nfc_xoff: %u\n"
3143 "fc_xon: %u\nrxglomfail: %u\n"
3144 "rxglomframes: %u\nrxglompkts: %u\n"
3145 "f2rxhdrs: %u\nf2rxdata: %u\n"
3146 "f2txdata: %u\nf1regdata: %u\n"
3147 "tickcnt: %u\ntx_ctlerrs: %lu\n"
3148 "tx_ctlpkts: %lu\nrx_ctlerrs: %lu\n"
3149 "rx_ctlpkts: %lu\nrx_readahead: %lu\n",
3150 sdcnt->intrcount, sdcnt->lastintrs,
3151 sdcnt->pollcnt, sdcnt->regfails,
3152 sdcnt->tx_sderrs, sdcnt->fcqueued,
3153 sdcnt->rxrtx, sdcnt->rx_toolong,
3154 sdcnt->rxc_errors, sdcnt->rx_hdrfail,
3155 sdcnt->rx_badhdr, sdcnt->rx_badseq,
3156 sdcnt->fc_rcvd, sdcnt->fc_xoff,
3157 sdcnt->fc_xon, sdcnt->rxglomfail,
3158 sdcnt->rxglomframes, sdcnt->rxglompkts,
3159 sdcnt->f2rxhdrs, sdcnt->f2rxdata,
3160 sdcnt->f2txdata, sdcnt->f1regdata,
3161 sdcnt->tickcnt, sdcnt->tx_ctlerrs,
3162 sdcnt->tx_ctlpkts, sdcnt->rx_ctlerrs,
3163 sdcnt->rx_ctlpkts, sdcnt->rx_readahead_cnt);
3168 static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus)
3170 struct brcmf_pub *drvr = bus->sdiodev->bus_if->drvr;
3171 struct dentry *dentry = brcmf_debugfs_get_devdir(drvr);
3173 if (IS_ERR_OR_NULL(dentry))
3176 brcmf_debugfs_add_entry(drvr, "forensics", brcmf_sdio_forensic_read);
3177 brcmf_debugfs_add_entry(drvr, "counters",
3178 brcmf_debugfs_sdio_count_read);
3179 debugfs_create_u32("console_interval", 0644, dentry,
3180 &bus->console_interval);
3183 static int brcmf_sdio_checkdied(struct brcmf_sdio *bus)
3188 static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus)
3194 brcmf_sdio_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen)
3200 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
3201 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
3202 struct brcmf_sdio *bus = sdiodev->bus;
3204 brcmf_dbg(TRACE, "Enter\n");
3206 /* Wait until control frame is available */
3207 timeleft = brcmf_sdio_dcmd_resp_wait(bus, &bus->rxlen, &pending);
3209 spin_lock_bh(&bus->rxctl_lock);
3211 memcpy(msg, bus->rxctl, min(msglen, rxlen));
3213 buf = bus->rxctl_orig;
3214 bus->rxctl_orig = NULL;
3216 spin_unlock_bh(&bus->rxctl_lock);
3220 brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n",
3222 } else if (timeleft == 0) {
3223 brcmf_err("resumed on timeout\n");
3224 brcmf_sdio_checkdied(bus);
3225 } else if (pending) {
3226 brcmf_dbg(CTL, "cancelled\n");
3227 return -ERESTARTSYS;
3229 brcmf_dbg(CTL, "resumed for unknown reason?\n");
3230 brcmf_sdio_checkdied(bus);
3234 bus->sdcnt.rx_ctlpkts++;
3236 bus->sdcnt.rx_ctlerrs++;
3238 return rxlen ? (int)rxlen : -ETIMEDOUT;
3243 brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr,
3244 u8 *ram_data, uint ram_sz)
3253 /* read back and verify */
3254 brcmf_dbg(INFO, "Compare RAM dl & ul at 0x%08x; size=%d\n", ram_addr,
3256 ram_cmp = kmalloc(MEMBLOCK, GFP_KERNEL);
3257 /* do not proceed while no memory but */
3263 while (offset < ram_sz) {
3264 len = ((offset + MEMBLOCK) < ram_sz) ? MEMBLOCK :
3266 err = brcmf_sdiod_ramrw(sdiodev, false, address, ram_cmp, len);
3268 brcmf_err("error %d on reading %d membytes at 0x%08x\n",
3272 } else if (memcmp(ram_cmp, &ram_data[offset], len)) {
3273 brcmf_err("Downloaded RAM image is corrupted, block offset is %d, len is %d\n",
3288 brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr,
3289 u8 *ram_data, uint ram_sz)
3295 static int brcmf_sdio_download_code_file(struct brcmf_sdio *bus,
3296 const struct firmware *fw)
3300 brcmf_dbg(TRACE, "Enter\n");
3302 err = brcmf_sdiod_ramrw(bus->sdiodev, true, bus->ci->rambase,
3303 (u8 *)fw->data, fw->size);
3305 brcmf_err("error %d on writing %d membytes at 0x%08x\n",
3306 err, (int)fw->size, bus->ci->rambase);
3307 else if (!brcmf_sdio_verifymemory(bus->sdiodev, bus->ci->rambase,
3308 (u8 *)fw->data, fw->size))
3314 static int brcmf_sdio_download_nvram(struct brcmf_sdio *bus,
3315 void *vars, u32 varsz)
3320 brcmf_dbg(TRACE, "Enter\n");
3322 address = bus->ci->ramsize - varsz + bus->ci->rambase;
3323 err = brcmf_sdiod_ramrw(bus->sdiodev, true, address, vars, varsz);
3325 brcmf_err("error %d on writing %d nvram bytes at 0x%08x\n",
3326 err, varsz, address);
3327 else if (!brcmf_sdio_verifymemory(bus->sdiodev, address, vars, varsz))
3333 static int brcmf_sdio_download_firmware(struct brcmf_sdio *bus,
3334 const struct firmware *fw,
3335 void *nvram, u32 nvlen)
3337 int bcmerror = -EFAULT;
3340 sdio_claim_host(bus->sdiodev->func[1]);
3341 brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
3343 /* Keep arm in reset */
3344 brcmf_chip_enter_download(bus->ci);
3346 rstvec = get_unaligned_le32(fw->data);
3347 brcmf_dbg(SDIO, "firmware rstvec: %x\n", rstvec);
3349 bcmerror = brcmf_sdio_download_code_file(bus, fw);
3350 release_firmware(fw);
3352 brcmf_err("dongle image file download failed\n");
3353 brcmf_fw_nvram_free(nvram);
3357 bcmerror = brcmf_sdio_download_nvram(bus, nvram, nvlen);
3358 brcmf_fw_nvram_free(nvram);
3360 brcmf_err("dongle nvram file download failed\n");
3364 /* Take arm out of reset */
3365 if (!brcmf_chip_exit_download(bus->ci, rstvec)) {
3366 brcmf_err("error getting out of ARM core reset\n");
3370 /* Allow HT Clock now that the ARM is running. */
3371 brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_LOAD);
3375 brcmf_sdio_clkctl(bus, CLK_SDONLY, false);
3376 sdio_release_host(bus->sdiodev->func[1]);
3380 static void brcmf_sdio_sr_init(struct brcmf_sdio *bus)
3385 brcmf_dbg(TRACE, "Enter\n");
3387 val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, &err);
3389 brcmf_err("error reading SBSDIO_FUNC1_WAKEUPCTRL\n");
3393 val |= 1 << SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT;
3394 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, val, &err);
3396 brcmf_err("error writing SBSDIO_FUNC1_WAKEUPCTRL\n");
3400 /* Add CMD14 Support */
3401 brcmf_sdiod_regwb(bus->sdiodev, SDIO_CCCR_BRCM_CARDCAP,
3402 (SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT |
3403 SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT),
3406 brcmf_err("error writing SDIO_CCCR_BRCM_CARDCAP\n");
3410 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
3411 SBSDIO_FORCE_HT, &err);
3413 brcmf_err("error writing SBSDIO_FUNC1_CHIPCLKCSR\n");
3418 bus->sr_enabled = true;
3419 brcmf_dbg(INFO, "SR enabled\n");
3422 /* enable KSO bit */
3423 static int brcmf_sdio_kso_init(struct brcmf_sdio *bus)
3428 brcmf_dbg(TRACE, "Enter\n");
3430 /* KSO bit added in SDIO core rev 12 */
3431 if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12)
3434 val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, &err);
3436 brcmf_err("error reading SBSDIO_FUNC1_SLEEPCSR\n");
3440 if (!(val & SBSDIO_FUNC1_SLEEPCSR_KSO_MASK)) {
3441 val |= (SBSDIO_FUNC1_SLEEPCSR_KSO_EN <<
3442 SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT);
3443 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR,
3446 brcmf_err("error writing SBSDIO_FUNC1_SLEEPCSR\n");
3455 static int brcmf_sdio_bus_preinit(struct device *dev)
3457 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
3458 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
3459 struct brcmf_sdio *bus = sdiodev->bus;
3464 /* the commands below use the terms tx and rx from
3465 * a device perspective, ie. bus:txglom affects the
3466 * bus transfers from device to host.
3468 if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) {
3469 /* for sdio core rev < 12, disable txgloming */
3471 err = brcmf_iovar_data_set(dev, "bus:txglom", &value,
3474 /* otherwise, set txglomalign */
3477 value = sdiodev->pdata->sd_sgentry_align;
3478 /* SDIO ADMA requires at least 32 bit alignment */
3479 value = max_t(u32, value, 4);
3480 err = brcmf_iovar_data_set(dev, "bus:txglomalign", &value,
3487 bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN;
3488 if (sdiodev->sg_support) {
3489 bus->txglom = false;
3491 pad_size = bus->sdiodev->func[2]->cur_blksize << 1;
3492 err = brcmf_iovar_data_set(bus->sdiodev->dev, "bus:rxglom",
3493 &value, sizeof(u32));
3495 /* bus:rxglom is allowed to fail */
3499 bus->tx_hdrlen += SDPCM_HWEXT_LEN;
3502 brcmf_bus_add_txhdrlen(bus->sdiodev->dev, bus->tx_hdrlen);
3508 void brcmf_sdio_isr(struct brcmf_sdio *bus)
3510 brcmf_dbg(TRACE, "Enter\n");
3513 brcmf_err("bus is null pointer, exiting\n");
3517 if (!brcmf_bus_ready(bus->sdiodev->bus_if)) {
3518 brcmf_err("bus is down. we have nothing to do\n");
3521 /* Count the interrupt call */
3522 bus->sdcnt.intrcount++;
3524 atomic_set(&bus->ipend, 1);
3526 if (brcmf_sdio_intr_rstatus(bus)) {
3527 brcmf_err("failed backplane access\n");
3530 /* Disable additional interrupts (is this needed now)? */
3532 brcmf_err("isr w/o interrupt configured!\n");
3534 atomic_inc(&bus->dpc_tskcnt);
3535 queue_work(bus->brcmf_wq, &bus->datawork);
3538 static bool brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus)
3541 struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev);
3544 brcmf_dbg(TIMER, "Enter\n");
3546 /* Poll period: check device if appropriate. */
3547 if (!bus->sr_enabled &&
3548 bus->poll && (++bus->polltick >= bus->pollrate)) {
3551 /* Reset poll tick */
3554 /* Check device if no interrupts */
3556 (bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) {
3558 if (atomic_read(&bus->dpc_tskcnt) == 0) {
3561 sdio_claim_host(bus->sdiodev->func[1]);
3562 devpend = brcmf_sdiod_regrb(bus->sdiodev,
3565 sdio_release_host(bus->sdiodev->func[1]);
3567 devpend & (INTR_STATUS_FUNC1 |
3571 /* If there is something, make like the ISR and
3574 bus->sdcnt.pollcnt++;
3575 atomic_set(&bus->ipend, 1);
3577 atomic_inc(&bus->dpc_tskcnt);
3578 queue_work(bus->brcmf_wq, &bus->datawork);
3582 /* Update interrupt tracking */
3583 bus->sdcnt.lastintrs = bus->sdcnt.intrcount;
3586 /* Poll for console output periodically */
3587 if (bus_if && bus_if->state == BRCMF_BUS_DATA &&
3588 bus->console_interval != 0) {
3589 bus->console.count += BRCMF_WD_POLL_MS;
3590 if (bus->console.count >= bus->console_interval) {
3591 bus->console.count -= bus->console_interval;
3592 sdio_claim_host(bus->sdiodev->func[1]);
3593 /* Make sure backplane clock is on */
3594 brcmf_sdio_bus_sleep(bus, false, false);
3595 if (brcmf_sdio_readconsole(bus) < 0)
3597 bus->console_interval = 0;
3598 sdio_release_host(bus->sdiodev->func[1]);
3603 /* On idle timeout clear activity flag and/or turn off clock */
3604 if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) {
3605 if (++bus->idlecount >= bus->idletime) {
3607 if (bus->activity) {
3608 bus->activity = false;
3609 brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
3611 brcmf_dbg(SDIO, "idle\n");
3612 sdio_claim_host(bus->sdiodev->func[1]);
3613 brcmf_sdio_bus_sleep(bus, true, false);
3614 sdio_release_host(bus->sdiodev->func[1]);
3619 return (atomic_read(&bus->ipend) > 0);
3622 static void brcmf_sdio_dataworker(struct work_struct *work)
3624 struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio,
3627 while (atomic_read(&bus->dpc_tskcnt)) {
3628 atomic_set(&bus->dpc_tskcnt, 0);
3629 brcmf_sdio_dpc(bus);
3634 brcmf_sdio_drivestrengthinit(struct brcmf_sdio_dev *sdiodev,
3635 struct brcmf_chip *ci, u32 drivestrength)
3637 const struct sdiod_drive_str *str_tab = NULL;
3642 u32 drivestrength_sel = 0;
3646 if (!(ci->cc_caps & CC_CAP_PMU))
3649 switch (SDIOD_DRVSTR_KEY(ci->chip, ci->pmurev)) {
3650 case SDIOD_DRVSTR_KEY(BRCM_CC_4330_CHIP_ID, 12):
3651 str_tab = sdiod_drvstr_tab1_1v8;
3652 str_mask = 0x00003800;
3655 case SDIOD_DRVSTR_KEY(BRCM_CC_4334_CHIP_ID, 17):
3656 str_tab = sdiod_drvstr_tab6_1v8;
3657 str_mask = 0x00001800;
3660 case SDIOD_DRVSTR_KEY(BRCM_CC_43143_CHIP_ID, 17):
3661 /* note: 43143 does not support tristate */
3662 i = ARRAY_SIZE(sdiod_drvstr_tab2_3v3) - 1;
3663 if (drivestrength >= sdiod_drvstr_tab2_3v3[i].strength) {
3664 str_tab = sdiod_drvstr_tab2_3v3;
3665 str_mask = 0x00000007;
3668 brcmf_err("Invalid SDIO Drive strength for chip %s, strength=%d\n",
3669 ci->name, drivestrength);
3671 case SDIOD_DRVSTR_KEY(BRCM_CC_43362_CHIP_ID, 13):
3672 str_tab = sdiod_drive_strength_tab5_1v8;
3673 str_mask = 0x00003800;
3677 brcmf_err("No SDIO Drive strength init done for chip %s rev %d pmurev %d\n",
3678 ci->name, ci->chiprev, ci->pmurev);
3682 if (str_tab != NULL) {
3683 for (i = 0; str_tab[i].strength != 0; i++) {
3684 if (drivestrength >= str_tab[i].strength) {
3685 drivestrength_sel = str_tab[i].sel;
3689 base = brcmf_chip_get_chipcommon(ci)->base;
3690 addr = CORE_CC_REG(base, chipcontrol_addr);
3691 brcmf_sdiod_regwl(sdiodev, addr, 1, NULL);
3692 cc_data_temp = brcmf_sdiod_regrl(sdiodev, addr, NULL);
3693 cc_data_temp &= ~str_mask;
3694 drivestrength_sel <<= str_shift;
3695 cc_data_temp |= drivestrength_sel;
3696 brcmf_sdiod_regwl(sdiodev, addr, cc_data_temp, NULL);
3698 brcmf_dbg(INFO, "SDIO: %d mA (req=%d mA) drive strength selected, set to 0x%08x\n",
3699 str_tab[i].strength, drivestrength, cc_data_temp);
3703 static int brcmf_sdio_buscoreprep(void *ctx)
3705 struct brcmf_sdio_dev *sdiodev = ctx;
3709 /* Try forcing SDIO core to do ALPAvail request only */
3710 clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ;
3711 brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err);
3713 brcmf_err("error writing for HT off\n");
3717 /* If register supported, wait for ALPAvail and then force ALP */
3718 /* This may take up to 15 milliseconds */
3719 clkval = brcmf_sdiod_regrb(sdiodev,
3720 SBSDIO_FUNC1_CHIPCLKCSR, NULL);
3722 if ((clkval & ~SBSDIO_AVBITS) != clkset) {
3723 brcmf_err("ChipClkCSR access: wrote 0x%02x read 0x%02x\n",
3728 SPINWAIT(((clkval = brcmf_sdiod_regrb(sdiodev,
3729 SBSDIO_FUNC1_CHIPCLKCSR, NULL)),
3730 !SBSDIO_ALPAV(clkval)),
3731 PMU_MAX_TRANSITION_DLY);
3732 if (!SBSDIO_ALPAV(clkval)) {
3733 brcmf_err("timeout on ALPAV wait, clkval 0x%02x\n",
3738 clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_FORCE_ALP;
3739 brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err);
3742 /* Also, disable the extra SDIO pull-ups */
3743 brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_SDIOPULLUP, 0, NULL);
3748 static void brcmf_sdio_buscore_exitdl(void *ctx, struct brcmf_chip *chip,
3751 struct brcmf_sdio_dev *sdiodev = ctx;
3752 struct brcmf_core *core;
3755 /* clear all interrupts */
3756 core = brcmf_chip_get_core(chip, BCMA_CORE_SDIO_DEV);
3757 reg_addr = core->base + offsetof(struct sdpcmd_regs, intstatus);
3758 brcmf_sdiod_regwl(sdiodev, reg_addr, 0xFFFFFFFF, NULL);
3761 /* Write reset vector to address 0 */
3762 brcmf_sdiod_ramrw(sdiodev, true, 0, (void *)&rstvec,
3766 static u32 brcmf_sdio_buscore_read32(void *ctx, u32 addr)
3768 struct brcmf_sdio_dev *sdiodev = ctx;
3771 val = brcmf_sdiod_regrl(sdiodev, addr, NULL);
3772 if (sdiodev->func[0]->device == BRCM_SDIO_4335_4339_DEVICE_ID &&
3773 addr == CORE_CC_REG(SI_ENUM_BASE, chipid)) {
3774 rev = (val & CID_REV_MASK) >> CID_REV_SHIFT;
3776 val &= ~CID_ID_MASK;
3777 val |= BRCM_CC_4339_CHIP_ID;
3783 static void brcmf_sdio_buscore_write32(void *ctx, u32 addr, u32 val)
3785 struct brcmf_sdio_dev *sdiodev = ctx;
3787 brcmf_sdiod_regwl(sdiodev, addr, val, NULL);
3790 static const struct brcmf_buscore_ops brcmf_sdio_buscore_ops = {
3791 .prepare = brcmf_sdio_buscoreprep,
3792 .exit_dl = brcmf_sdio_buscore_exitdl,
3793 .read32 = brcmf_sdio_buscore_read32,
3794 .write32 = brcmf_sdio_buscore_write32,
3798 brcmf_sdio_probe_attach(struct brcmf_sdio *bus)
3806 sdio_claim_host(bus->sdiodev->func[1]);
3808 pr_debug("F1 signature read @0x18000000=0x%4x\n",
3809 brcmf_sdiod_regrl(bus->sdiodev, SI_ENUM_BASE, NULL));
3812 * Force PLL off until brcmf_chip_attach()
3813 * programs PLL control regs
3816 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
3817 BRCMF_INIT_CLKCTL1, &err);
3819 clkctl = brcmf_sdiod_regrb(bus->sdiodev,
3820 SBSDIO_FUNC1_CHIPCLKCSR, &err);
3822 if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) {
3823 brcmf_err("ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n",
3824 err, BRCMF_INIT_CLKCTL1, clkctl);
3828 /* SDIO register access works so moving
3829 * state from UNKNOWN to DOWN.
3831 brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_DOWN);
3833 bus->ci = brcmf_chip_attach(bus->sdiodev, &brcmf_sdio_buscore_ops);
3834 if (IS_ERR(bus->ci)) {
3835 brcmf_err("brcmf_chip_attach failed!\n");
3840 if (brcmf_sdio_kso_init(bus)) {
3841 brcmf_err("error enabling KSO\n");
3845 if ((bus->sdiodev->pdata) && (bus->sdiodev->pdata->drive_strength))
3846 drivestrength = bus->sdiodev->pdata->drive_strength;
3848 drivestrength = DEFAULT_SDIO_DRIVE_STRENGTH;
3849 brcmf_sdio_drivestrengthinit(bus->sdiodev, bus->ci, drivestrength);
3851 /* Get info on the SOCRAM cores... */
3852 bus->ramsize = bus->ci->ramsize;
3853 if (!(bus->ramsize)) {
3854 brcmf_err("failed to find SOCRAM memory!\n");
3858 /* Set card control so an SDIO card reset does a WLAN backplane reset */
3859 reg_val = brcmf_sdiod_regrb(bus->sdiodev,
3860 SDIO_CCCR_BRCM_CARDCTRL, &err);
3864 reg_val |= SDIO_CCCR_BRCM_CARDCTRL_WLANRESET;
3866 brcmf_sdiod_regwb(bus->sdiodev,
3867 SDIO_CCCR_BRCM_CARDCTRL, reg_val, &err);
3871 /* set PMUControl so a backplane reset does PMU state reload */
3872 reg_addr = CORE_CC_REG(brcmf_chip_get_chipcommon(bus->ci)->base,
3874 reg_val = brcmf_sdiod_regrl(bus->sdiodev, reg_addr, &err);
3878 reg_val |= (BCMA_CC_PMU_CTL_RES_RELOAD << BCMA_CC_PMU_CTL_RES_SHIFT);
3880 brcmf_sdiod_regwl(bus->sdiodev, reg_addr, reg_val, &err);
3884 sdio_release_host(bus->sdiodev->func[1]);
3886 brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN);
3888 /* allocate header buffer */
3889 bus->hdrbuf = kzalloc(MAX_HDR_READ + bus->head_align, GFP_KERNEL);
3892 /* Locate an appropriately-aligned portion of hdrbuf */
3893 bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0],
3896 /* Set the poll and/or interrupt flags */
3905 sdio_release_host(bus->sdiodev->func[1]);
3910 brcmf_sdio_watchdog_thread(void *data)
3912 struct brcmf_sdio *bus = (struct brcmf_sdio *)data;
3914 allow_signal(SIGTERM);
3915 /* Run until signal received */
3917 if (kthread_should_stop())
3919 if (!wait_for_completion_interruptible(&bus->watchdog_wait)) {
3920 brcmf_sdio_bus_watchdog(bus);
3921 /* Count the tick for reference */
3922 bus->sdcnt.tickcnt++;
3923 reinit_completion(&bus->watchdog_wait);
3931 brcmf_sdio_watchdog(unsigned long data)
3933 struct brcmf_sdio *bus = (struct brcmf_sdio *)data;
3935 if (bus->watchdog_tsk) {
3936 complete(&bus->watchdog_wait);
3937 /* Reschedule the watchdog */
3938 if (bus->wd_timer_valid)
3939 mod_timer(&bus->timer,
3940 jiffies + BRCMF_WD_POLL_MS * HZ / 1000);
3944 static struct brcmf_bus_ops brcmf_sdio_bus_ops = {
3945 .stop = brcmf_sdio_bus_stop,
3946 .preinit = brcmf_sdio_bus_preinit,
3947 .txdata = brcmf_sdio_bus_txdata,
3948 .txctl = brcmf_sdio_bus_txctl,
3949 .rxctl = brcmf_sdio_bus_rxctl,
3950 .gettxq = brcmf_sdio_bus_gettxq,
3953 static void brcmf_sdio_firmware_callback(struct device *dev,
3954 const struct firmware *code,
3955 void *nvram, u32 nvram_len)
3957 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
3958 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
3959 struct brcmf_sdio *bus = sdiodev->bus;
3963 brcmf_dbg(TRACE, "Enter: dev=%s\n", dev_name(dev));
3965 /* try to download image and nvram to the dongle */
3966 if (bus_if->state == BRCMF_BUS_DOWN) {
3967 bus->alp_only = true;
3968 err = brcmf_sdio_download_firmware(bus, code, nvram, nvram_len);
3971 bus->alp_only = false;
3977 /* Start the watchdog timer */
3978 bus->sdcnt.tickcnt = 0;
3979 brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS);
3981 sdio_claim_host(sdiodev->func[1]);
3983 /* Make sure backplane clock is on, needed to generate F2 interrupt */
3984 brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
3985 if (bus->clkstate != CLK_AVAIL)
3988 /* Force clocks on backplane to be sure F2 interrupt propagates */
3989 saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, &err);
3991 brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
3992 (saveclk | SBSDIO_FORCE_HT), &err);
3995 brcmf_err("Failed to force clock for F2: err %d\n", err);
3999 /* Enable function 2 (frame transfers) */
4000 w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT,
4001 offsetof(struct sdpcmd_regs, tosbmailboxdata));
4002 err = sdio_enable_func(sdiodev->func[SDIO_FUNC_2]);
4005 brcmf_dbg(INFO, "enable F2: err=%d\n", err);
4007 /* If F2 successfully enabled, set core and enable interrupts */
4009 /* Set up the interrupt mask and enable interrupts */
4010 bus->hostintmask = HOSTINTMASK;
4011 w_sdreg32(bus, bus->hostintmask,
4012 offsetof(struct sdpcmd_regs, hostintmask));
4014 brcmf_sdiod_regwb(sdiodev, SBSDIO_WATERMARK, 8, &err);
4016 /* Disable F2 again */
4017 sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
4021 if (brcmf_chip_sr_capable(bus->ci)) {
4022 brcmf_sdio_sr_init(bus);
4024 /* Restore previous clock setting */
4025 brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
4030 err = brcmf_sdiod_intr_register(sdiodev);
4032 brcmf_err("intr register failed:%d\n", err);
4035 /* If we didn't come up, turn off backplane clock */
4037 brcmf_sdio_clkctl(bus, CLK_NONE, false);
4039 sdio_release_host(sdiodev->func[1]);
4041 err = brcmf_bus_start(dev);
4043 brcmf_err("dongle is not responding\n");
4049 sdio_release_host(sdiodev->func[1]);
4051 brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err);
4052 device_release_driver(dev);
4055 struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
4058 struct brcmf_sdio *bus;
4060 brcmf_dbg(TRACE, "Enter\n");
4062 /* Allocate private bus interface state */
4063 bus = kzalloc(sizeof(struct brcmf_sdio), GFP_ATOMIC);
4067 bus->sdiodev = sdiodev;
4069 skb_queue_head_init(&bus->glom);
4070 bus->txbound = BRCMF_TXBOUND;
4071 bus->rxbound = BRCMF_RXBOUND;
4072 bus->txminmax = BRCMF_TXMINMAX;
4073 bus->tx_seq = SDPCM_SEQ_WRAP - 1;
4075 /* platform specific configuration:
4076 * alignments must be at least 4 bytes for ADMA
4078 bus->head_align = ALIGNMENT;
4079 bus->sgentry_align = ALIGNMENT;
4080 if (sdiodev->pdata) {
4081 if (sdiodev->pdata->sd_head_align > ALIGNMENT)
4082 bus->head_align = sdiodev->pdata->sd_head_align;
4083 if (sdiodev->pdata->sd_sgentry_align > ALIGNMENT)
4084 bus->sgentry_align = sdiodev->pdata->sd_sgentry_align;
4087 INIT_WORK(&bus->datawork, brcmf_sdio_dataworker);
4088 bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq");
4089 if (bus->brcmf_wq == NULL) {
4090 brcmf_err("insufficient memory to create txworkqueue\n");
4094 /* attempt to attach to the dongle */
4095 if (!(brcmf_sdio_probe_attach(bus))) {
4096 brcmf_err("brcmf_sdio_probe_attach failed\n");
4100 spin_lock_init(&bus->rxctl_lock);
4101 spin_lock_init(&bus->txq_lock);
4102 sema_init(&bus->tx_seq_lock, 1);
4103 init_waitqueue_head(&bus->ctrl_wait);
4104 init_waitqueue_head(&bus->dcmd_resp_wait);
4106 /* Set up the watchdog timer */
4107 init_timer(&bus->timer);
4108 bus->timer.data = (unsigned long)bus;
4109 bus->timer.function = brcmf_sdio_watchdog;
4111 /* Initialize watchdog thread */
4112 init_completion(&bus->watchdog_wait);
4113 bus->watchdog_tsk = kthread_run(brcmf_sdio_watchdog_thread,
4114 bus, "brcmf_watchdog");
4115 if (IS_ERR(bus->watchdog_tsk)) {
4116 pr_warn("brcmf_watchdog thread failed to start\n");
4117 bus->watchdog_tsk = NULL;
4119 /* Initialize DPC thread */
4120 atomic_set(&bus->dpc_tskcnt, 0);
4122 /* Assign bus interface call back */
4123 bus->sdiodev->bus_if->dev = bus->sdiodev->dev;
4124 bus->sdiodev->bus_if->ops = &brcmf_sdio_bus_ops;
4125 bus->sdiodev->bus_if->chip = bus->ci->chip;
4126 bus->sdiodev->bus_if->chiprev = bus->ci->chiprev;
4128 /* default sdio bus header length for tx packet */
4129 bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN;
4131 /* Attach to the common layer, reserve hdr space */
4132 ret = brcmf_attach(bus->sdiodev->dev);
4134 brcmf_err("brcmf_attach failed\n");
4138 /* Query the F2 block size, set roundup accordingly */
4139 bus->blocksize = bus->sdiodev->func[2]->cur_blksize;
4140 bus->roundup = min(max_roundup, bus->blocksize);
4142 /* Allocate buffers */
4143 if (bus->sdiodev->bus_if->maxctl) {
4144 bus->sdiodev->bus_if->maxctl += bus->roundup;
4146 roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN),
4147 ALIGNMENT) + bus->head_align;
4148 bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC);
4149 if (!(bus->rxbuf)) {
4150 brcmf_err("rxbuf allocation failed\n");
4155 sdio_claim_host(bus->sdiodev->func[1]);
4157 /* Disable F2 to clear any intermediate frame state on the dongle */
4158 sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]);
4160 bus->rxflow = false;
4162 /* Done with backplane-dependent accesses, can drop clock... */
4163 brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL);
4165 sdio_release_host(bus->sdiodev->func[1]);
4167 /* ...and initialize clock/power states */
4168 bus->clkstate = CLK_SDONLY;
4169 bus->idletime = BRCMF_IDLE_INTERVAL;
4170 bus->idleclock = BRCMF_IDLE_ACTIVE;
4173 bus->sleeping = false;
4174 bus->sr_enabled = false;
4176 brcmf_sdio_debugfs_create(bus);
4177 brcmf_dbg(INFO, "completed!!\n");
4179 ret = brcmf_sdio_get_fwnames(bus->ci, sdiodev);
4183 ret = brcmf_fw_get_firmwares(sdiodev->dev, BRCMF_FW_REQUEST_NVRAM,
4184 sdiodev->fw_name, sdiodev->nvram_name,
4185 brcmf_sdio_firmware_callback);
4187 brcmf_err("async firmware request failed: %d\n", ret);
4194 brcmf_sdio_remove(bus);
4198 /* Detach and free everything */
4199 void brcmf_sdio_remove(struct brcmf_sdio *bus)
4201 brcmf_dbg(TRACE, "Enter\n");
4204 /* De-register interrupt handler */
4205 brcmf_sdiod_intr_unregister(bus->sdiodev);
4207 brcmf_detach(bus->sdiodev->dev);
4209 cancel_work_sync(&bus->datawork);
4211 destroy_workqueue(bus->brcmf_wq);
4214 if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) {
4215 sdio_claim_host(bus->sdiodev->func[1]);
4216 brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
4217 /* Leave the device in state where it is
4218 * 'quiet'. This is done by putting it in
4219 * download_state which essentially resets
4220 * all necessary cores.
4223 brcmf_chip_enter_download(bus->ci);
4224 brcmf_sdio_clkctl(bus, CLK_NONE, false);
4225 sdio_release_host(bus->sdiodev->func[1]);
4227 brcmf_chip_detach(bus->ci);
4235 brcmf_dbg(TRACE, "Disconnected\n");
4238 void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick)
4240 /* Totally stop the timer */
4241 if (!wdtick && bus->wd_timer_valid) {
4242 del_timer_sync(&bus->timer);
4243 bus->wd_timer_valid = false;
4244 bus->save_ms = wdtick;
4248 /* don't start the wd until fw is loaded */
4249 if (bus->sdiodev->bus_if->state != BRCMF_BUS_DATA)
4253 if (bus->save_ms != BRCMF_WD_POLL_MS) {
4254 if (bus->wd_timer_valid)
4255 /* Stop timer and restart at new value */
4256 del_timer_sync(&bus->timer);
4258 /* Create timer again when watchdog period is
4259 dynamically changed or in the first instance
4261 bus->timer.expires =
4262 jiffies + BRCMF_WD_POLL_MS * HZ / 1000;
4263 add_timer(&bus->timer);
4266 /* Re arm the timer, at last watchdog period */
4267 mod_timer(&bus->timer,
4268 jiffies + BRCMF_WD_POLL_MS * HZ / 1000);
4271 bus->wd_timer_valid = true;
4272 bus->save_ms = wdtick;