diff options
Diffstat (limited to 'drivers/staging/brcm80211/brcmfmac/dhd_sdio.c')
| -rw-r--r-- | drivers/staging/brcm80211/brcmfmac/dhd_sdio.c | 6390 |
1 files changed, 0 insertions, 6390 deletions
diff --git a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c b/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c deleted file mode 100644 index a71c6f8ee8a3..000000000000 --- a/drivers/staging/brcm80211/brcmfmac/dhd_sdio.c +++ /dev/null @@ -1,6390 +0,0 @@ -/* - * Copyright (c) 2010 Broadcom Corporation - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY - * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION - * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN - * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/printk.h> -#include <linux/pci_ids.h> -#include <linux/netdevice.h> -#include <bcmdefs.h> -#include <bcmsdh.h> - -#ifdef BCMEMBEDIMAGE -#include BCMEMBEDIMAGE -#endif /* BCMEMBEDIMAGE */ - -#include <bcmdefs.h> -#include <bcmutils.h> -#include <bcmdevs.h> - -#include <hndsoc.h> -#ifdef DHD_DEBUG -#include <hndrte_armtrap.h> -#include <hndrte_cons.h> -#endif /* DHD_DEBUG */ -#include <sbchipc.h> -#include <sbhnddma.h> - -#include <sdio.h> -#include <sbsdio.h> -#include <sbsdpcmdev.h> -#include <bcmsdpcm.h> - -#include <proto/802.11.h> - -#include <dngl_stats.h> -#include <dhd.h> -#include <dhd_bus.h> -#include <dhd_proto.h> -#include <dhd_dbg.h> -#include <dhdioctl.h> -#include <sdiovar.h> -#include <bcmchip.h> - -#ifndef DHDSDIO_MEM_DUMP_FNAME -#define DHDSDIO_MEM_DUMP_FNAME "mem_dump" -#endif - -#define TXQLEN 2048 /* bulk tx queue length */ -#define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */ -#define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */ -#define PRIOMASK 7 - -#define TXRETRIES 2 /* # of retries for tx frames */ - -#if defined(CONFIG_MACH_SANDGATE2G) -#define DHD_RXBOUND 250 /* Default for max rx frames in - one scheduling */ -#else -#define DHD_RXBOUND 50 /* Default for max rx frames in - one scheduling */ -#endif /* defined(CONFIG_MACH_SANDGATE2G) */ - -#define DHD_TXBOUND 20 /* Default for max tx frames in - one scheduling */ - -#define DHD_TXMINMAX 1 /* Max tx frames if rx still pending */ - -#define MEMBLOCK 2048 /* Block size used for downloading - of dongle image */ -#define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold - biggest possible glom */ - -/* Packet alignment for most efficient SDIO (can change based on platform) */ -#ifndef DHD_SDALIGN -#define DHD_SDALIGN 32 -#endif -#if !ISPOWEROF2(DHD_SDALIGN) -#error DHD_SDALIGN is not a power of 2! -#endif - -#ifndef DHD_FIRSTREAD -#define DHD_FIRSTREAD 32 -#endif -#if !ISPOWEROF2(DHD_FIRSTREAD) -#error DHD_FIRSTREAD is not a power of 2! -#endif - -/* Total length of frame header for dongle protocol */ -#define SDPCM_HDRLEN (SDPCM_FRAMETAG_LEN + SDPCM_SWHEADER_LEN) -#ifdef SDTEST -#define SDPCM_RESERVE (SDPCM_HDRLEN + SDPCM_TEST_HDRLEN + DHD_SDALIGN) -#else -#define SDPCM_RESERVE (SDPCM_HDRLEN + DHD_SDALIGN) -#endif - -/* Space for header read, limit for data packets */ -#ifndef MAX_HDR_READ -#define MAX_HDR_READ 32 -#endif -#if !ISPOWEROF2(MAX_HDR_READ) -#error MAX_HDR_READ is not a power of 2! -#endif - -#define MAX_RX_DATASZ 2048 - -/* Maximum milliseconds to wait for F2 to come up */ -#define DHD_WAIT_F2RDY 3000 - -/* Bump up limit on waiting for HT to account for first startup; - * if the image is doing a CRC calculation before programming the PMU - * for HT availability, it could take a couple hundred ms more, so - * max out at a 1 second (1000000us). - */ -#if (PMU_MAX_TRANSITION_DLY <= 1000000) -#undef PMU_MAX_TRANSITION_DLY -#define PMU_MAX_TRANSITION_DLY 1000000 -#endif - -/* Value for ChipClockCSR during initial setup */ -#define DHD_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \ - SBSDIO_ALP_AVAIL_REQ) -#define DHD_INIT_CLKCTL2 (SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_FORCE_ALP) - -/* Flags for SDH calls */ -#define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED) - -/* - * Conversion of 802.1D priority to precedence level - */ -#define PRIO2PREC(prio) \ - (((prio) == PRIO_8021D_NONE || (prio) == PRIO_8021D_BE) ? \ - ((prio^2)) : (prio)) - -DHD_SPINWAIT_SLEEP_INIT(sdioh_spinwait_sleep); -extern int dhdcdc_set_ioctl(dhd_pub_t *dhd, int ifidx, uint cmd, void *buf, - uint len); - -#ifdef DHD_DEBUG -/* Device console log buffer state */ -typedef struct dhd_console { - uint count; /* Poll interval msec counter */ - uint log_addr; /* Log struct address (fixed) */ - hndrte_log_t log; /* Log struct (host copy) */ - uint bufsize; /* Size of log buffer */ - u8 *buf; /* Log buffer (host copy) */ - uint last; /* Last buffer read index */ -} dhd_console_t; -#endif /* DHD_DEBUG */ - -/* misc chip info needed by some of the routines */ -struct chip_info { - u32 chip; - u32 chiprev; - u32 cccorebase; - u32 ccrev; - u32 cccaps; - u32 buscorebase; - u32 buscorerev; - u32 buscoretype; - u32 ramcorebase; - u32 armcorebase; - u32 pmurev; - u32 ramsize; -}; - -/* Private data for SDIO bus interaction */ -typedef struct dhd_bus { - dhd_pub_t *dhd; - - bcmsdh_info_t *sdh; /* Handle for BCMSDH calls */ - struct chip_info *ci; /* Chip info struct */ - char *vars; /* Variables (from CIS and/or other) */ - uint varsz; /* Size of variables buffer */ - u32 sbaddr; /* Current SB window pointer (-1, invalid) */ - - sdpcmd_regs_t *regs; /* Registers for SDIO core */ - uint sdpcmrev; /* SDIO core revision */ - uint armrev; /* CPU core revision */ - uint ramrev; /* SOCRAM core revision */ - u32 ramsize; /* Size of RAM in SOCRAM (bytes) */ - u32 orig_ramsize; /* Size of RAM in SOCRAM (bytes) */ - - u32 bus; /* gSPI or SDIO bus */ - u32 hostintmask; /* Copy of Host Interrupt Mask */ - u32 intstatus; /* Intstatus bits (events) pending */ - bool dpc_sched; /* Indicates DPC schedule (intrpt rcvd) */ - bool fcstate; /* State of dongle flow-control */ - - u16 cl_devid; /* cached devid for dhdsdio_probe_attach() */ - char *fw_path; /* module_param: path to firmware image */ - char *nv_path; /* module_param: path to nvram vars file */ - const char *nvram_params; /* user specified nvram params. */ - - uint blocksize; /* Block size of SDIO transfers */ - uint roundup; /* Max roundup limit */ - - struct pktq txq; /* Queue length used for flow-control */ - u8 flowcontrol; /* per prio flow control bitmask */ - u8 tx_seq; /* Transmit sequence number (next) */ - u8 tx_max; /* Maximum transmit sequence allowed */ - - u8 hdrbuf[MAX_HDR_READ + DHD_SDALIGN]; - u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */ - u16 nextlen; /* Next Read Len from last header */ - u8 rx_seq; /* Receive sequence number (expected) */ - bool rxskip; /* Skip receive (awaiting NAK ACK) */ - - struct sk_buff *glomd; /* Packet containing glomming descriptor */ - struct sk_buff *glom; /* Packet chain for glommed superframe */ - uint glomerr; /* Glom packet read errors */ - - u8 *rxbuf; /* Buffer for receiving control packets */ - uint rxblen; /* Allocated length of rxbuf */ - u8 *rxctl; /* Aligned pointer into rxbuf */ - u8 *databuf; /* Buffer for receiving big glom packet */ - u8 *dataptr; /* Aligned pointer into databuf */ - uint rxlen; /* Length of valid data in buffer */ - - u8 sdpcm_ver; /* Bus protocol reported by dongle */ - - bool intr; /* Use interrupts */ - bool poll; /* Use polling */ - bool ipend; /* Device interrupt is pending */ - bool intdis; /* Interrupts disabled by isr */ - uint intrcount; /* Count of device interrupt callbacks */ - uint lastintrs; /* Count as of last watchdog timer */ - uint spurious; /* Count of spurious interrupts */ - uint pollrate; /* Ticks between device polls */ - uint polltick; /* Tick counter */ - uint pollcnt; /* Count of active polls */ - -#ifdef DHD_DEBUG - dhd_console_t console; /* Console output polling support */ - uint console_addr; /* Console address from shared struct */ -#endif /* DHD_DEBUG */ - - uint regfails; /* Count of R_REG/W_REG failures */ - - uint clkstate; /* State of sd and backplane clock(s) */ - bool activity; /* Activity flag for clock down */ - s32 idletime; /* Control for activity timeout */ - s32 idlecount; /* Activity timeout counter */ - s32 idleclock; /* How to set bus driver when idle */ - s32 sd_divisor; /* Speed control to bus driver */ - s32 sd_mode; /* Mode control to bus driver */ - s32 sd_rxchain; /* If bcmsdh api accepts PKT chains */ - bool use_rxchain; /* If dhd should use PKT chains */ - bool sleeping; /* Is SDIO bus sleeping? */ - bool rxflow_mode; /* Rx flow control mode */ - bool rxflow; /* Is rx flow control on */ - uint prev_rxlim_hit; /* Is prev rx limit exceeded - (per dpc schedule) */ - bool alp_only; /* Don't use HT clock (ALP only) */ -/* Field to decide if rx of control frames happen in rxbuf or lb-pool */ - bool usebufpool; - -#ifdef SDTEST - /* external loopback */ - bool ext_loop; - u8 loopid; - - /* pktgen configuration */ - uint pktgen_freq; /* Ticks between bursts */ - uint pktgen_count; /* Packets to send each burst */ - uint pktgen_print; /* Bursts between count displays */ - uint pktgen_total; /* Stop after this many */ - uint pktgen_minlen; /* Minimum packet data len */ - uint pktgen_maxlen; /* Maximum packet data len */ - uint pktgen_mode; /* Configured mode: tx, rx, or echo */ - uint pktgen_stop; /* Number of tx failures causing stop */ - - /* active pktgen fields */ - uint pktgen_tick; /* Tick counter for bursts */ - uint pktgen_ptick; /* Burst counter for printing */ - uint pktgen_sent; /* Number of test packets generated */ - uint pktgen_rcvd; /* Number of test packets received */ - uint pktgen_fail; /* Number of failed send attempts */ - u16 pktgen_len; /* Length of next packet to send */ -#endif /* SDTEST */ - - /* Some additional counters */ - uint tx_sderrs; /* Count of tx attempts with sd errors */ - uint fcqueued; /* Tx packets that got queued */ - uint rxrtx; /* Count of rtx requests (NAK to dongle) */ - uint rx_toolong; /* Receive frames too long to receive */ - uint rxc_errors; /* SDIO errors when reading control frames */ - uint rx_hdrfail; /* SDIO errors on header reads */ - uint rx_badhdr; /* Bad received headers (roosync?) */ - uint rx_badseq; /* Mismatched rx sequence number */ - uint fc_rcvd; /* Number of flow-control events received */ - uint fc_xoff; /* Number which turned on flow-control */ - uint fc_xon; /* Number which turned off flow-control */ - uint rxglomfail; /* Failed deglom attempts */ - uint rxglomframes; /* Number of glom frames (superframes) */ - uint rxglompkts; /* Number of packets from glom frames */ - uint f2rxhdrs; /* Number of header reads */ - uint f2rxdata; /* Number of frame data reads */ - uint f2txdata; /* Number of f2 frame writes */ - uint f1regdata; /* Number of f1 register accesses */ - - u8 *ctrl_frame_buf; - u32 ctrl_frame_len; - bool ctrl_frame_stat; -} dhd_bus_t; - -/* clkstate */ -#define CLK_NONE 0 -#define CLK_SDONLY 1 -#define CLK_PENDING 2 /* Not used yet */ -#define CLK_AVAIL 3 - -#define DHD_NOPMU(dhd) (false) - -#ifdef DHD_DEBUG -static int qcount[NUMPRIO]; -static int tx_packets[NUMPRIO]; -#endif /* DHD_DEBUG */ - -/* Deferred transmit */ -const uint dhd_deferred_tx = 1; - -extern uint dhd_watchdog_ms; -extern void dhd_os_wd_timer(void *bus, uint wdtick); - -/* Tx/Rx bounds */ -uint dhd_txbound; -uint dhd_rxbound; -uint dhd_txminmax; - -/* override the RAM size if possible */ -#define DONGLE_MIN_MEMSIZE (128 * 1024) -int dhd_dongle_memsize; - -static bool dhd_alignctl; - -static bool sd1idle; - -static bool retrydata; -#define RETRYCHAN(chan) (((chan) == SDPCM_EVENT_CHANNEL) || retrydata) - -static const uint watermark = 8; -static const uint firstread = DHD_FIRSTREAD; - -#define HDATLEN (firstread - (SDPCM_HDRLEN)) - -/* Retry count for register access failures */ -static const uint retry_limit = 2; - -/* Force even SD lengths (some host controllers mess up on odd bytes) */ -static bool forcealign; - -#define ALIGNMENT 4 - -#if defined(OOB_INTR_ONLY) && defined(HW_OOB) -extern void bcmsdh_enable_hw_oob_intr(void *sdh, bool enable); -#endif - -#if defined(OOB_INTR_ONLY) && defined(SDIO_ISR_THREAD) -#error OOB_INTR_ONLY is NOT working with SDIO_ISR_THREAD -#endif /* defined(OOB_INTR_ONLY) && defined(SDIO_ISR_THREAD) */ -#define PKTALIGN(_p, _len, _align) \ - do { \ - uint datalign; \ - datalign = (unsigned long)((_p)->data); \ - datalign = roundup(datalign, (_align)) - datalign; \ - ASSERT(datalign < (_align)); \ - ASSERT((_p)->len >= ((_len) + datalign)); \ - if (datalign) \ - skb_pull((_p), datalign); \ - __skb_trim((_p), (_len)); \ - } while (0) - -/* Limit on rounding up frames */ -static const uint max_roundup = 512; - -/* Try doing readahead */ -static bool dhd_readahead; - -/* To check if there's window offered */ -#define DATAOK(bus) \ - (((u8)(bus->tx_max - bus->tx_seq) != 0) && \ - (((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0)) - -/* Macros to get register read/write status */ -/* NOTE: these assume a local dhdsdio_bus_t *bus! */ -#define R_SDREG(regvar, regaddr, retryvar) \ -do { \ - retryvar = 0; \ - do { \ - regvar = R_REG(regaddr); \ - } while (bcmsdh_regfail(bus->sdh) && (++retryvar <= retry_limit)); \ - if (retryvar) { \ - bus->regfails += (retryvar-1); \ - if (retryvar > retry_limit) { \ - DHD_ERROR(("%s: FAILED" #regvar "READ, LINE %d\n", \ - __func__, __LINE__)); \ - regvar = 0; \ - } \ - } \ -} while (0) - -#define W_SDREG(regval, regaddr, retryvar) \ -do { \ - retryvar = 0; \ - do { \ - W_REG(regaddr, regval); \ - } while (bcmsdh_regfail(bus->sdh) && (++retryvar <= retry_limit)); \ - if (retryvar) { \ - bus->regfails += (retryvar-1); \ - if (retryvar > retry_limit) \ - DHD_ERROR(("%s: FAILED REGISTER WRITE, LINE %d\n", \ - __func__, __LINE__)); \ - } \ -} while (0) - -#define DHD_BUS SDIO_BUS - -#define PKT_AVAILABLE() (intstatus & I_HMB_FRAME_IND) - -#define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE) - -#ifdef SDTEST -static void dhdsdio_testrcv(dhd_bus_t *bus, void *pkt, uint seq); -static void dhdsdio_sdtest_set(dhd_bus_t *bus, bool start); -#endif - -#ifdef DHD_DEBUG -static int dhdsdio_checkdied(dhd_bus_t *bus, u8 *data, uint size); -static int dhdsdio_mem_dump(dhd_bus_t *bus); -#endif /* DHD_DEBUG */ -static int dhdsdio_download_state(dhd_bus_t *bus, bool enter); - -static void dhdsdio_release(dhd_bus_t *bus); -static void dhdsdio_release_malloc(dhd_bus_t *bus); -static void dhdsdio_disconnect(void *ptr); -static bool dhdsdio_chipmatch(u16 chipid); -static bool dhdsdio_probe_attach(dhd_bus_t *bus, void *sdh, - void *regsva, u16 devid); -static bool dhdsdio_probe_malloc(dhd_bus_t *bus, void *sdh); -static bool dhdsdio_probe_init(dhd_bus_t *bus, void *sdh); -static void dhdsdio_release_dongle(dhd_bus_t *bus); - -static uint process_nvram_vars(char *varbuf, uint len); - -static void dhd_dongle_setmemsize(struct dhd_bus *bus, int mem_size); -static int dhd_bcmsdh_send_buf(dhd_bus_t *bus, u32 addr, uint fn, - uint flags, u8 *buf, uint nbytes, - struct sk_buff *pkt, bcmsdh_cmplt_fn_t complete, - void *handle); - -static bool dhdsdio_download_firmware(struct dhd_bus *bus, void *sdh); -static int _dhdsdio_download_firmware(struct dhd_bus *bus); - -static int dhdsdio_download_code_file(struct dhd_bus *bus, char *image_path); -static int dhdsdio_download_nvram(struct dhd_bus *bus); -#ifdef BCMEMBEDIMAGE -static int dhdsdio_download_code_array(struct dhd_bus *bus); -#endif -static void dhdsdio_chip_disablecore(bcmsdh_info_t *sdh, u32 corebase); -static int dhdsdio_chip_attach(struct dhd_bus *bus, void *regs); -static void dhdsdio_chip_resetcore(bcmsdh_info_t *sdh, u32 corebase); -static void dhdsdio_sdiod_drive_strength_init(struct dhd_bus *bus, - u32 drivestrength); -static void dhdsdio_chip_detach(struct dhd_bus *bus); - -/* Packet free applicable unconditionally for sdio and sdspi. - * Conditional if bufpool was present for gspi bus. - */ -static void dhdsdio_pktfree2(dhd_bus_t *bus, struct sk_buff *pkt) -{ - dhd_os_sdlock_rxq(bus->dhd); - if ((bus->bus != SPI_BUS) || bus->usebufpool) - bcm_pkt_buf_free_skb(pkt); - dhd_os_sdunlock_rxq(bus->dhd); -} - -static void dhd_dongle_setmemsize(struct dhd_bus *bus, int mem_size) -{ - s32 min_size = DONGLE_MIN_MEMSIZE; - /* Restrict the memsize to user specified limit */ - DHD_ERROR(("user: Restrict the dongle ram size to %d, min %d\n", - dhd_dongle_memsize, min_size)); - if ((dhd_dongle_memsize > min_size) && - (dhd_dongle_memsize < (s32) bus->orig_ramsize)) - bus->ramsize = dhd_dongle_memsize; -} - -static int dhdsdio_set_siaddr_window(dhd_bus_t *bus, u32 address) -{ - int err = 0; - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW, - (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err); - if (!err) - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRMID, - (address >> 16) & SBSDIO_SBADDRMID_MASK, &err); - if (!err) - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRHIGH, - (address >> 24) & SBSDIO_SBADDRHIGH_MASK, - &err); - return err; -} - -/* Turn backplane clock on or off */ -static int dhdsdio_htclk(dhd_bus_t *bus, bool on, bool pendok) -{ - int err; - u8 clkctl, clkreq, devctl; - bcmsdh_info_t *sdh; - - DHD_TRACE(("%s: Enter\n", __func__)); - -#if defined(OOB_INTR_ONLY) - pendok = false; -#endif - clkctl = 0; - sdh = bus->sdh; - - if (on) { - /* Request HT Avail */ - clkreq = - bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ; - - if ((bus->ci->chip == BCM4329_CHIP_ID) - && (bus->ci->chiprev == 0)) - clkreq |= SBSDIO_FORCE_ALP; - - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - clkreq, &err); - if (err) { - DHD_ERROR(("%s: HT Avail request error: %d\n", - __func__, err)); - return -EBADE; - } - - if (pendok && ((bus->ci->buscoretype == PCMCIA_CORE_ID) - && (bus->ci->buscorerev == 9))) { - u32 dummy, retries; - R_SDREG(dummy, &bus->regs->clockctlstatus, retries); - } - - /* Check current status */ - clkctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - &err); - if (err) { - DHD_ERROR(("%s: HT Avail read error: %d\n", - __func__, err)); - return -EBADE; - } - - /* Go to pending and await interrupt if appropriate */ - if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) { - /* Allow only clock-available interrupt */ - devctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - &err); - if (err) { - DHD_ERROR(("%s: Devctl error setting CA: %d\n", - __func__, err)); - return -EBADE; - } - - devctl |= SBSDIO_DEVCTL_CA_INT_ONLY; - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - devctl, &err); - DHD_INFO(("CLKCTL: set PENDING\n")); - bus->clkstate = CLK_PENDING; - - return 0; - } else if (bus->clkstate == CLK_PENDING) { - /* Cancel CA-only interrupt filter */ - devctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - &err); - devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - devctl, &err); - } - - /* Otherwise, wait here (polling) for HT Avail */ - if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { - SPINWAIT_SLEEP(sdioh_spinwait_sleep, - ((clkctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - &err)), - !SBSDIO_CLKAV(clkctl, bus->alp_only)), - PMU_MAX_TRANSITION_DLY); - } - if (err) { - DHD_ERROR(("%s: HT Avail request error: %d\n", - __func__, err)); - return -EBADE; - } - if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { - DHD_ERROR(("%s: HT Avail timeout (%d): clkctl 0x%02x\n", - __func__, PMU_MAX_TRANSITION_DLY, clkctl)); - return -EBADE; - } - - /* Mark clock available */ - bus->clkstate = CLK_AVAIL; - DHD_INFO(("CLKCTL: turned ON\n")); - -#if defined(DHD_DEBUG) - if (bus->alp_only == true) { -#if !defined(BCMLXSDMMC) - if (!SBSDIO_ALPONLY(clkctl)) { - DHD_ERROR(("%s: HT Clock, when ALP Only\n", - __func__)); - } -#endif /* !defined(BCMLXSDMMC) */ - } else { - if (SBSDIO_ALPONLY(clkctl)) { - DHD_ERROR(("%s: HT Clock should be on.\n", - __func__)); - } - } -#endif /* defined (DHD_DEBUG) */ - - bus->activity = true; - } else { - clkreq = 0; - - if (bus->clkstate == CLK_PENDING) { - /* Cancel CA-only interrupt filter */ - devctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - &err); - devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - devctl, &err); - } - - bus->clkstate = CLK_SDONLY; - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - clkreq, &err); - DHD_INFO(("CLKCTL: turned OFF\n")); - if (err) { - DHD_ERROR(("%s: Failed access turning clock off: %d\n", - __func__, err)); - return -EBADE; - } - } - return 0; -} - -/* Change idle/active SD state */ -static int dhdsdio_sdclk(dhd_bus_t *bus, bool on) -{ - int err; - s32 iovalue; - - DHD_TRACE(("%s: Enter\n", __func__)); - - if (on) { - if (bus->idleclock == DHD_IDLE_STOP) { - /* Turn on clock and restore mode */ - iovalue = 1; - err = bcmsdh_iovar_op(bus->sdh, "sd_clock", NULL, 0, - &iovalue, sizeof(iovalue), true); - if (err) { - DHD_ERROR(("%s: error enabling sd_clock: %d\n", - __func__, err)); - return -EBADE; - } - - iovalue = bus->sd_mode; - err = bcmsdh_iovar_op(bus->sdh, "sd_mode", NULL, 0, - &iovalue, sizeof(iovalue), true); - if (err) { - DHD_ERROR(("%s: error changing sd_mode: %d\n", - __func__, err)); - return -EBADE; - } - } else if (bus->idleclock != DHD_IDLE_ACTIVE) { - /* Restore clock speed */ - iovalue = bus->sd_divisor; - err = bcmsdh_iovar_op(bus->sdh, "sd_divisor", NULL, 0, - &iovalue, sizeof(iovalue), true); - if (err) { - DHD_ERROR(("%s: error restoring sd_divisor: %d\n", - __func__, err)); - return -EBADE; - } - } - bus->clkstate = CLK_SDONLY; - } else { - /* Stop or slow the SD clock itself */ - if ((bus->sd_divisor == -1) || (bus->sd_mode == -1)) { - DHD_TRACE(("%s: can't idle clock, divisor %d mode %d\n", - __func__, bus->sd_divisor, bus->sd_mode)); - return -EBADE; - } - if (bus->idleclock == DHD_IDLE_STOP) { - if (sd1idle) { - /* Change to SD1 mode and turn off clock */ - iovalue = 1; - err = - bcmsdh_iovar_op(bus->sdh, "sd_mode", NULL, - 0, &iovalue, - sizeof(iovalue), true); - if (err) { - DHD_ERROR(("%s: error changing sd_clock: %d\n", - __func__, err)); - return -EBADE; - } - } - - iovalue = 0; - err = bcmsdh_iovar_op(bus->sdh, "sd_clock", NULL, 0, - &iovalue, sizeof(iovalue), true); - if (err) { - DHD_ERROR(("%s: error disabling sd_clock: %d\n", - __func__, err)); - return -EBADE; - } - } else if (bus->idleclock != DHD_IDLE_ACTIVE) { - /* Set divisor to idle value */ - iovalue = bus->idleclock; - err = bcmsdh_iovar_op(bus->sdh, "sd_divisor", NULL, 0, - &iovalue, sizeof(iovalue), true); - if (err) { - DHD_ERROR(("%s: error changing sd_divisor: %d\n", - __func__, err)); - return -EBADE; - } - } - bus->clkstate = CLK_NONE; - } - - return 0; -} - -/* Transition SD and backplane clock readiness */ -static int dhdsdio_clkctl(dhd_bus_t *bus, uint target, bool pendok) -{ -#ifdef DHD_DEBUG - uint oldstate = bus->clkstate; -#endif /* DHD_DEBUG */ - - DHD_TRACE(("%s: Enter\n", __func__)); - - /* Early exit if we're already there */ - if (bus->clkstate == target) { - if (target == CLK_AVAIL) { - dhd_os_wd_timer(bus->dhd, dhd_watchdog_ms); - bus->activity = true; - } - return 0; - } - - switch (target) { - case CLK_AVAIL: - /* Make sure SD clock is available */ - if (bus->clkstate == CLK_NONE) - dhdsdio_sdclk(bus, true); - /* Now request HT Avail on the backplane */ - dhdsdio_htclk(bus, true, pendok); - dhd_os_wd_timer(bus->dhd, dhd_watchdog_ms); - bus->activity = true; - break; - - case CLK_SDONLY: - /* Remove HT request, or bring up SD clock */ - if (bus->clkstate == CLK_NONE) - dhdsdio_sdclk(bus, true); - else if (bus->clkstate == CLK_AVAIL) - dhdsdio_htclk(bus, false, false); - else - DHD_ERROR(("dhdsdio_clkctl: request for %d -> %d\n", - bus->clkstate, target)); - dhd_os_wd_timer(bus->dhd, dhd_watchdog_ms); - break; - - case CLK_NONE: - /* Make sure to remove HT request */ - if (bus->clkstate == CLK_AVAIL) - dhdsdio_htclk(bus, false, false); - /* Now remove the SD clock */ - dhdsdio_sdclk(bus, false); - dhd_os_wd_timer(bus->dhd, 0); - break; - } -#ifdef DHD_DEBUG - DHD_INFO(("dhdsdio_clkctl: %d -> %d\n", oldstate, bus->clkstate)); -#endif /* DHD_DEBUG */ - - return 0; -} - -int dhdsdio_bussleep(dhd_bus_t *bus, bool sleep) -{ - bcmsdh_info_t *sdh = bus->sdh; - sdpcmd_regs_t *regs = bus->regs; - uint retries = 0; - - DHD_INFO(("dhdsdio_bussleep: request %s (currently %s)\n", - (sleep ? "SLEEP" : "WAKE"), - (bus->sleeping ? "SLEEP" : "WAKE"))); - - /* Done if we're already in the requested state */ - if (sleep == bus->sleeping) - return 0; - - /* Going to sleep: set the alarm and turn off the lights... */ - if (sleep) { - /* Don't sleep if something is pending */ - if (bus->dpc_sched || bus->rxskip || pktq_len(&bus->txq)) - return -EBUSY; - - /* Disable SDIO interrupts (no longer interested) */ - bcmsdh_intr_disable(bus->sdh); - - /* Make sure the controller has the bus up */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - - /* Tell device to start using OOB wakeup */ - W_SDREG(SMB_USE_OOB, ®s->tosbmailbox, retries); - if (retries > retry_limit) - DHD_ERROR(("CANNOT SIGNAL CHIP, WILL NOT WAKE UP!!\n")); - - /* Turn off our contribution to the HT clock request */ - dhdsdio_clkctl(bus, CLK_SDONLY, false); - - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - SBSDIO_FORCE_HW_CLKREQ_OFF, NULL); - - /* Isolate the bus */ - if (bus->ci->chip != BCM4329_CHIP_ID - && bus->ci->chip != BCM4319_CHIP_ID) { - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - SBSDIO_DEVCTL_PADS_ISO, NULL); - } - - /* Change state */ - bus->sleeping = true; - - } else { - /* Waking up: bus power up is ok, set local state */ - - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - 0, NULL); - - /* Force pad isolation off if possible - (in case power never toggled) */ - if ((bus->ci->buscoretype == PCMCIA_CORE_ID) - && (bus->ci->buscorerev >= 10)) - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, 0, - NULL); - - /* Make sure the controller has the bus up */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - - /* Send misc interrupt to indicate OOB not needed */ - W_SDREG(0, ®s->tosbmailboxdata, retries); - if (retries <= retry_limit) - W_SDREG(SMB_DEV_INT, ®s->tosbmailbox, retries); - - if (retries > retry_limit) - DHD_ERROR(("CANNOT SIGNAL CHIP TO CLEAR OOB!!\n")); - - /* Make sure we have SD bus access */ - dhdsdio_clkctl(bus, CLK_SDONLY, false); - - /* Change state */ - bus->sleeping = false; - - /* Enable interrupts again */ - if (bus->intr && (bus->dhd->busstate == DHD_BUS_DATA)) { - bus->intdis = false; - bcmsdh_intr_enable(bus->sdh); - } - } - - return 0; -} - -#if defined(OOB_INTR_ONLY) -void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable) -{ -#if defined(HW_OOB) - bcmsdh_enable_hw_oob_intr(bus->sdh, enable); -#else - sdpcmd_regs_t *regs = bus->regs; - uint retries = 0; - - dhdsdio_clkctl(bus, CLK_AVAIL, false); - if (enable == true) { - - /* Tell device to start using OOB wakeup */ - W_SDREG(SMB_USE_OOB, ®s->tosbmailbox, retries); - if (retries > retry_limit) - DHD_ERROR(("CANNOT SIGNAL CHIP, WILL NOT WAKE UP!!\n")); - - } else { - /* Send misc interrupt to indicate OOB not needed */ - W_SDREG(0, ®s->tosbmailboxdata, retries); - if (retries <= retry_limit) - W_SDREG(SMB_DEV_INT, ®s->tosbmailbox, retries); - } - - /* Turn off our contribution to the HT clock request */ - dhdsdio_clkctl(bus, CLK_SDONLY, false); -#endif /* !defined(HW_OOB) */ -} -#endif /* defined(OOB_INTR_ONLY) */ - -#define BUS_WAKE(bus) \ - do { \ - if ((bus)->sleeping) \ - dhdsdio_bussleep((bus), false); \ - } while (0); - -/* Writes a HW/SW header into the packet and sends it. */ -/* Assumes: (a) header space already there, (b) caller holds lock */ -static int dhdsdio_txpkt(dhd_bus_t *bus, struct sk_buff *pkt, uint chan, - bool free_pkt) -{ - int ret; - u8 *frame; - u16 len, pad = 0; - u32 swheader; - uint retries = 0; - bcmsdh_info_t *sdh; - struct sk_buff *new; - int i; - - DHD_TRACE(("%s: Enter\n", __func__)); - - sdh = bus->sdh; - - if (bus->dhd->dongle_reset) { - ret = -EPERM; - goto done; - } - - frame = (u8 *) (pkt->data); - - /* Add alignment padding, allocate new packet if needed */ - pad = ((unsigned long)frame % DHD_SDALIGN); - if (pad) { - if (skb_headroom(pkt) < pad) { - DHD_INFO(("%s: insufficient headroom %d for %d pad\n", - __func__, skb_headroom(pkt), pad)); - bus->dhd->tx_realloc++; - new = bcm_pkt_buf_get_skb(pkt->len + DHD_SDALIGN); - if (!new) { - DHD_ERROR(("%s: couldn't allocate new %d-byte " - "packet\n", - __func__, pkt->len + DHD_SDALIGN)); - ret = -ENOMEM; - goto done; - } - - PKTALIGN(new, pkt->len, DHD_SDALIGN); - memcpy(new->data, pkt->data, pkt->len); - if (free_pkt) - bcm_pkt_buf_free_skb(pkt); - /* free the pkt if canned one is not used */ - free_pkt = true; - pkt = new; - frame = (u8 *) (pkt->data); - ASSERT(((unsigned long)frame % DHD_SDALIGN) == 0); - pad = 0; - } else { - skb_push(pkt, pad); - frame = (u8 *) (pkt->data); - - ASSERT((pad + SDPCM_HDRLEN) <= (int)(pkt->len)); - memset(frame, 0, pad + SDPCM_HDRLEN); - } - } - ASSERT(pad < DHD_SDALIGN); - - /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ - len = (u16) (pkt->len); - *(u16 *) frame = cpu_to_le16(len); - *(((u16 *) frame) + 1) = cpu_to_le16(~len); - - /* Software tag: channel, sequence number, data offset */ - swheader = - ((chan << SDPCM_CHANNEL_SHIFT) & SDPCM_CHANNEL_MASK) | bus->tx_seq | - (((pad + - SDPCM_HDRLEN) << SDPCM_DOFFSET_SHIFT) & SDPCM_DOFFSET_MASK); - - put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); - put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); - -#ifdef DHD_DEBUG - tx_packets[pkt->priority]++; - if (DHD_BYTES_ON() && - (((DHD_CTL_ON() && (chan == SDPCM_CONTROL_CHANNEL)) || - (DHD_DATA_ON() && (chan != SDPCM_CONTROL_CHANNEL))))) { - printk(KERN_DEBUG "Tx Frame:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, frame, len); - } else if (DHD_HDRS_ON()) { - printk(KERN_DEBUG "TxHdr:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - frame, min_t(u16, len, 16)); - } -#endif - - /* Raise len to next SDIO block to eliminate tail command */ - if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { - u16 pad = bus->blocksize - (len % bus->blocksize); - if ((pad <= bus->roundup) && (pad < bus->blocksize)) -#ifdef NOTUSED - if (pad <= skb_tailroom(pkt)) -#endif /* NOTUSED */ - len += pad; - } else if (len % DHD_SDALIGN) { - len += DHD_SDALIGN - (len % DHD_SDALIGN); - } - - /* Some controllers have trouble with odd bytes -- round to even */ - if (forcealign && (len & (ALIGNMENT - 1))) { -#ifdef NOTUSED - if (skb_tailroom(pkt)) -#endif - len = roundup(len, ALIGNMENT); -#ifdef NOTUSED - else - DHD_ERROR(("%s: sending unrounded %d-byte packet\n", - __func__, len)); -#endif - } - - do { - ret = - dhd_bcmsdh_send_buf(bus, bcmsdh_cur_sbwad(sdh), SDIO_FUNC_2, - F2SYNC, frame, len, pkt, NULL, NULL); - bus->f2txdata++; - ASSERT(ret != -BCME_PENDING); - - if (ret < 0) { - /* On failure, abort the command - and terminate the frame */ - DHD_INFO(("%s: sdio error %d, abort command and " - "terminate frame.\n", __func__, ret)); - bus->tx_sderrs++; - - bcmsdh_abort(sdh, SDIO_FUNC_2); - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, - NULL); - bus->f1regdata++; - - for (i = 0; i < 3; i++) { - u8 hi, lo; - hi = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCHI, - NULL); - lo = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCLO, - NULL); - bus->f1regdata += 2; - if ((hi == 0) && (lo == 0)) - break; - } - - } - if (ret == 0) - bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; - - } while ((ret < 0) && retrydata && retries++ < TXRETRIES); - -done: - /* restore pkt buffer pointer before calling tx complete routine */ - skb_pull(pkt, SDPCM_HDRLEN + pad); - dhd_os_sdunlock(bus->dhd); - dhd_txcomplete(bus->dhd, pkt, ret != 0); - dhd_os_sdlock(bus->dhd); - - if (free_pkt) - bcm_pkt_buf_free_skb(pkt); - - return ret; -} - -int dhd_bus_txdata(struct dhd_bus *bus, struct sk_buff *pkt) -{ - int ret = -EBADE; - uint datalen, prec; - - DHD_TRACE(("%s: Enter\n", __func__)); - - datalen = pkt->len; - -#ifdef SDTEST - /* Push the test header if doing loopback */ - if (bus->ext_loop) { - u8 *data; - skb_push(pkt, SDPCM_TEST_HDRLEN); - data = pkt->data; - *data++ = SDPCM_TEST_ECHOREQ; - *data++ = (u8) bus->loopid++; - *data++ = (datalen >> 0); - *data++ = (datalen >> 8); - datalen += SDPCM_TEST_HDRLEN; - } -#endif /* SDTEST */ - - /* Add space for the header */ - skb_push(pkt, SDPCM_HDRLEN); - ASSERT(IS_ALIGNED((unsigned long)(pkt->data), 2)); - - prec = PRIO2PREC((pkt->priority & PRIOMASK)); - - /* Check for existing queue, current flow-control, - pending event, or pending clock */ - if (dhd_deferred_tx || bus->fcstate || pktq_len(&bus->txq) - || bus->dpc_sched || (!DATAOK(bus)) - || (bus->flowcontrol & NBITVAL(prec)) - || (bus->clkstate != CLK_AVAIL)) { - DHD_TRACE(("%s: deferring pktq len %d\n", __func__, - pktq_len(&bus->txq))); - bus->fcqueued++; - - /* Priority based enq */ - dhd_os_sdlock_txq(bus->dhd); - if (dhd_prec_enq(bus->dhd, &bus->txq, pkt, prec) == false) { - skb_pull(pkt, SDPCM_HDRLEN); - dhd_txcomplete(bus->dhd, pkt, false); - bcm_pkt_buf_free_skb(pkt); - DHD_ERROR(("%s: out of bus->txq !!!\n", __func__)); - ret = -ENOSR; - } else { - ret = 0; - } - dhd_os_sdunlock_txq(bus->dhd); - - if (pktq_len(&bus->txq) >= TXHI) - dhd_txflowcontrol(bus->dhd, 0, ON); - -#ifdef DHD_DEBUG - if (pktq_plen(&bus->txq, prec) > qcount[prec]) - qcount[prec] = pktq_plen(&bus->txq, prec); -#endif - /* Schedule DPC if needed to send queued packet(s) */ - if (dhd_deferred_tx && !bus->dpc_sched) { - bus->dpc_sched = true; - dhd_sched_dpc(bus->dhd); - } - } else { - /* Lock: we're about to use shared data/code (and SDIO) */ - dhd_os_sdlock(bus->dhd); - - /* Otherwise, send it now */ - BUS_WAKE(bus); - /* Make sure back plane ht clk is on, no pending allowed */ - dhdsdio_clkctl(bus, CLK_AVAIL, true); - -#ifndef SDTEST - DHD_TRACE(("%s: calling txpkt\n", __func__)); - ret = dhdsdio_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); -#else - ret = dhdsdio_txpkt(bus, pkt, - (bus->ext_loop ? SDPCM_TEST_CHANNEL : - SDPCM_DATA_CHANNEL), true); -#endif - if (ret) - bus->dhd->tx_errors++; - else - bus->dhd->dstats.tx_bytes += datalen; - - if ((bus->idletime == DHD_IDLE_IMMEDIATE) && !bus->dpc_sched) { - bus->activity = false; - dhdsdio_clkctl(bus, CLK_NONE, true); - } - - dhd_os_sdunlock(bus->dhd); - } - - return ret; -} - -static uint dhdsdio_sendfromq(dhd_bus_t *bus, uint maxframes) -{ - struct sk_buff *pkt; - u32 intstatus = 0; - uint retries = 0; - int ret = 0, prec_out; - uint cnt = 0; - uint datalen; - u8 tx_prec_map; - - dhd_pub_t *dhd = bus->dhd; - sdpcmd_regs_t *regs = bus->regs; - - DHD_TRACE(("%s: Enter\n", __func__)); - - tx_prec_map = ~bus->flowcontrol; - - /* Send frames until the limit or some other event */ - for (cnt = 0; (cnt < maxframes) && DATAOK(bus); cnt++) { - dhd_os_sdlock_txq(bus->dhd); - pkt = bcm_pktq_mdeq(&bus->txq, tx_prec_map, &prec_out); - if (pkt == NULL) { - dhd_os_sdunlock_txq(bus->dhd); - break; - } - dhd_os_sdunlock_txq(bus->dhd); - datalen = pkt->len - SDPCM_HDRLEN; - -#ifndef SDTEST - ret = dhdsdio_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); -#else - ret = dhdsdio_txpkt(bus, pkt, - (bus->ext_loop ? SDPCM_TEST_CHANNEL : - SDPCM_DATA_CHANNEL), true); -#endif - if (ret) - bus->dhd->tx_errors++; - else - bus->dhd->dstats.tx_bytes += datalen; - - /* In poll mode, need to check for other events */ - if (!bus->intr && cnt) { - /* Check device status, signal pending interrupt */ - R_SDREG(intstatus, ®s->intstatus, retries); - bus->f2txdata++; - if (bcmsdh_regfail(bus->sdh)) - break; - if (intstatus & bus->hostintmask) - bus->ipend = true; - } - } - - /* Deflow-control stack if needed */ - if (dhd->up && (dhd->busstate == DHD_BUS_DATA) && - dhd->txoff && (pktq_len(&bus->txq) < TXLOW)) - dhd_txflowcontrol(dhd, 0, OFF); - - return cnt; -} - -int dhd_bus_txctl(struct dhd_bus *bus, unsigned char *msg, uint msglen) -{ - u8 *frame; - u16 len; - u32 swheader; - uint retries = 0; - bcmsdh_info_t *sdh = bus->sdh; - u8 doff = 0; - int ret = -1; - int i; - - DHD_TRACE(("%s: Enter\n", __func__)); - - if (bus->dhd->dongle_reset) - return -EIO; - - /* Back the pointer to make a room for bus header */ - frame = msg - SDPCM_HDRLEN; - len = (msglen += SDPCM_HDRLEN); - - /* Add alignment padding (optional for ctl frames) */ - if (dhd_alignctl) { - doff = ((unsigned long)frame % DHD_SDALIGN); - if (doff) { - frame -= doff; - len += doff; - msglen += doff; - memset(frame, 0, doff + SDPCM_HDRLEN); - } - ASSERT(doff < DHD_SDALIGN); - } - doff += SDPCM_HDRLEN; - - /* Round send length to next SDIO block */ - if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { - u16 pad = bus->blocksize - (len % bus->blocksize); - if ((pad <= bus->roundup) && (pad < bus->blocksize)) - len += pad; - } else if (len % DHD_SDALIGN) { - len += DHD_SDALIGN - (len % DHD_SDALIGN); - } - - /* Satisfy length-alignment requirements */ - if (forcealign && (len & (ALIGNMENT - 1))) - len = roundup(len, ALIGNMENT); - - ASSERT(IS_ALIGNED((unsigned long)frame, 2)); - - /* Need to lock here to protect txseq and SDIO tx calls */ - dhd_os_sdlock(bus->dhd); - - BUS_WAKE(bus); - - /* Make sure backplane clock is on */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - - /* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */ - *(u16 *) frame = cpu_to_le16((u16) msglen); - *(((u16 *) frame) + 1) = cpu_to_le16(~msglen); - - /* Software tag: channel, sequence number, data offset */ - swheader = - ((SDPCM_CONTROL_CHANNEL << SDPCM_CHANNEL_SHIFT) & - SDPCM_CHANNEL_MASK) - | bus->tx_seq | ((doff << SDPCM_DOFFSET_SHIFT) & - SDPCM_DOFFSET_MASK); - put_unaligned_le32(swheader, frame + SDPCM_FRAMETAG_LEN); - put_unaligned_le32(0, frame + SDPCM_FRAMETAG_LEN + sizeof(swheader)); - - if (!DATAOK(bus)) { - DHD_INFO(("%s: No bus credit bus->tx_max %d, bus->tx_seq %d\n", - __func__, bus->tx_max, bus->tx_seq)); - bus->ctrl_frame_stat = true; - /* Send from dpc */ - bus->ctrl_frame_buf = frame; - bus->ctrl_frame_len = len; - - dhd_wait_for_event(bus->dhd, &bus->ctrl_frame_stat); - - if (bus->ctrl_frame_stat == false) { - DHD_INFO(("%s: ctrl_frame_stat == false\n", __func__)); - ret = 0; - } else { - DHD_INFO(("%s: ctrl_frame_stat == true\n", __func__)); - ret = -1; - } - } - - if (ret == -1) { -#ifdef DHD_DEBUG - if (DHD_BYTES_ON() && DHD_CTL_ON()) { - printk(KERN_DEBUG "Tx Frame:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - frame, len); - } else if (DHD_HDRS_ON()) { - printk(KERN_DEBUG "TxHdr:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - frame, min_t(u16, len, 16)); - } -#endif - - do { - bus->ctrl_frame_stat = false; - ret = - dhd_bcmsdh_send_buf(bus, bcmsdh_cur_sbwad(sdh), - SDIO_FUNC_2, F2SYNC, frame, len, - NULL, NULL, NULL); - - ASSERT(ret != -BCME_PENDING); - - if (ret < 0) { - /* On failure, abort the command and - terminate the frame */ - DHD_INFO(("%s: sdio error %d, abort command and terminate frame.\n", - __func__, ret)); - bus->tx_sderrs++; - - bcmsdh_abort(sdh, SDIO_FUNC_2); - - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_FRAMECTRL, - SFC_WF_TERM, NULL); - bus->f1regdata++; - - for (i = 0; i < 3; i++) { - u8 hi, lo; - hi = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCHI, - NULL); - lo = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCLO, - NULL); - bus->f1regdata += 2; - if ((hi == 0) && (lo == 0)) - break; - } - - } - if (ret == 0) { - bus->tx_seq = - (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; - } - } while ((ret < 0) && retries++ < TXRETRIES); - } - - if ((bus->idletime == DHD_IDLE_IMMEDIATE) && !bus->dpc_sched) { - bus->activity = false; - dhdsdio_clkctl(bus, CLK_NONE, true); - } - - dhd_os_sdunlock(bus->dhd); - - if (ret) - bus->dhd->tx_ctlerrs++; - else - bus->dhd->tx_ctlpkts++; - - return ret ? -EIO : 0; -} - -int dhd_bus_rxctl(struct dhd_bus *bus, unsigned char *msg, uint msglen) -{ - int timeleft; - uint rxlen = 0; - bool pending; - - DHD_TRACE(("%s: Enter\n", __func__)); - - if (bus->dhd->dongle_reset) - return -EIO; - - /* Wait until control frame is available */ - timeleft = dhd_os_ioctl_resp_wait(bus->dhd, &bus->rxlen, &pending); - - dhd_os_sdlock(bus->dhd); - rxlen = bus->rxlen; - memcpy(msg, bus->rxctl, min(msglen, rxlen)); - bus->rxlen = 0; - dhd_os_sdunlock(bus->dhd); - - if (rxlen) { - DHD_CTL(("%s: resumed on rxctl frame, got %d expected %d\n", - __func__, rxlen, msglen)); - } else if (timeleft == 0) { - DHD_ERROR(("%s: resumed on timeout\n", __func__)); -#ifdef DHD_DEBUG - dhd_os_sdlock(bus->dhd); - dhdsdio_checkdied(bus, NULL, 0); - dhd_os_sdunlock(bus->dhd); -#endif /* DHD_DEBUG */ - } else if (pending == true) { - DHD_CTL(("%s: cancelled\n", __func__)); - return -ERESTARTSYS; - } else { - DHD_CTL(("%s: resumed for unknown reason?\n", __func__)); -#ifdef DHD_DEBUG - dhd_os_sdlock(bus->dhd); - dhdsdio_checkdied(bus, NULL, 0); - dhd_os_sdunlock(bus->dhd); -#endif /* DHD_DEBUG */ - } - - if (rxlen) - bus->dhd->rx_ctlpkts++; - else - bus->dhd->rx_ctlerrs++; - - return rxlen ? (int)rxlen : -ETIMEDOUT; -} - -/* IOVar table */ -enum { - IOV_INTR = 1, - IOV_POLLRATE, - IOV_SDREG, - IOV_SBREG, - IOV_SDCIS, - IOV_MEMBYTES, - IOV_MEMSIZE, -#ifdef DHD_DEBUG - IOV_CHECKDIED, -#endif - IOV_DOWNLOAD, - IOV_FORCEEVEN, - IOV_SDIOD_DRIVE, - IOV_READAHEAD, - IOV_SDRXCHAIN, - IOV_ALIGNCTL, - IOV_SDALIGN, - IOV_DEVRESET, - IOV_CPU, -#ifdef SDTEST - IOV_PKTGEN, - IOV_EXTLOOP, -#endif /* SDTEST */ - IOV_SPROM, - IOV_TXBOUND, - IOV_RXBOUND, - IOV_TXMINMAX, - IOV_IDLETIME, - IOV_IDLECLOCK, - IOV_SD1IDLE, - IOV_SLEEP, - IOV_VARS -}; - -const bcm_iovar_t dhdsdio_iovars[] = { - {"intr", IOV_INTR, 0, IOVT_BOOL, 0}, - {"sleep", IOV_SLEEP, 0, IOVT_BOOL, 0}, - {"pollrate", IOV_POLLRATE, 0, IOVT_UINT32, 0}, - {"idletime", IOV_IDLETIME, 0, IOVT_INT32, 0}, - {"idleclock", IOV_IDLECLOCK, 0, IOVT_INT32, 0}, - {"sd1idle", IOV_SD1IDLE, 0, IOVT_BOOL, 0}, - {"membytes", IOV_MEMBYTES, 0, IOVT_BUFFER, 2 * sizeof(int)}, - {"memsize", IOV_MEMSIZE, 0, IOVT_UINT32, 0}, - {"download", IOV_DOWNLOAD, 0, IOVT_BOOL, 0}, - {"vars", IOV_VARS, 0, IOVT_BUFFER, 0}, - {"sdiod_drive", IOV_SDIOD_DRIVE, 0, IOVT_UINT32, 0}, - {"readahead", IOV_READAHEAD, 0, IOVT_BOOL, 0}, - {"sdrxchain", IOV_SDRXCHAIN, 0, IOVT_BOOL, 0}, - {"alignctl", IOV_ALIGNCTL, 0, IOVT_BOOL, 0}, - {"sdalign", IOV_SDALIGN, 0, IOVT_BOOL, 0}, - {"devreset", IOV_DEVRESET, 0, IOVT_BOOL, 0}, -#ifdef DHD_DEBUG - {"sdreg", IOV_SDREG, 0, IOVT_BUFFER, sizeof(sdreg_t)} - , - {"sbreg", IOV_SBREG, 0, IOVT_BUFFER, sizeof(sdreg_t)} - , - {"sd_cis", IOV_SDCIS, 0, IOVT_BUFFER, DHD_IOCTL_MAXLEN} - , - {"forcealign", IOV_FORCEEVEN, 0, IOVT_BOOL, 0} - , - {"txbound", IOV_TXBOUND, 0, IOVT_UINT32, 0} - , - {"rxbound", IOV_RXBOUND, 0, IOVT_UINT32, 0} - , - {"txminmax", IOV_TXMINMAX, 0, IOVT_UINT32, 0} - , - {"cpu", IOV_CPU, 0, IOVT_BOOL, 0} - , -#ifdef DHD_DEBUG - {"checkdied", IOV_CHECKDIED, 0, IOVT_BUFFER, 0} - , -#endif /* DHD_DEBUG */ -#endif /* DHD_DEBUG */ -#ifdef SDTEST - {"extloop", IOV_EXTLOOP, 0, IOVT_BOOL, 0} - , - {"pktgen", IOV_PKTGEN, 0, IOVT_BUFFER, sizeof(dhd_pktgen_t)} - , -#endif /* SDTEST */ - - {NULL, 0, 0, 0, 0} -}; - -static void -dhd_dump_pct(struct bcmstrbuf *strbuf, char *desc, uint num, uint div) -{ - uint q1, q2; - - if (!div) { - bcm_bprintf(strbuf, "%s N/A", desc); - } else { - q1 = num / div; - q2 = (100 * (num - (q1 * div))) / div; - bcm_bprintf(strbuf, "%s %d.%02d", desc, q1, q2); - } -} - -void dhd_bus_dump(dhd_pub_t *dhdp, struct bcmstrbuf *strbuf) -{ - dhd_bus_t *bus = dhdp->bus; - - bcm_bprintf(strbuf, "Bus SDIO structure:\n"); - bcm_bprintf(strbuf, - "hostintmask 0x%08x intstatus 0x%08x sdpcm_ver %d\n", - bus->hostintmask, bus->intstatus, bus->sdpcm_ver); - bcm_bprintf(strbuf, - "fcstate %d qlen %d tx_seq %d, max %d, rxskip %d rxlen %d rx_seq %d\n", - bus->fcstate, pktq_len(&bus->txq), bus->tx_seq, bus->tx_max, - bus->rxskip, bus->rxlen, bus->rx_seq); - bcm_bprintf(strbuf, "intr %d intrcount %d lastintrs %d spurious %d\n", - bus->intr, bus->intrcount, bus->lastintrs, bus->spurious); - bcm_bprintf(strbuf, "pollrate %d pollcnt %d regfails %d\n", - bus->pollrate, bus->pollcnt, bus->regfails); - - bcm_bprintf(strbuf, "\nAdditional counters:\n"); - bcm_bprintf(strbuf, - "tx_sderrs %d fcqueued %d rxrtx %d rx_toolong %d rxc_errors %d\n", - bus->tx_sderrs, bus->fcqueued, bus->rxrtx, bus->rx_toolong, - bus->rxc_errors); - bcm_bprintf(strbuf, "rx_hdrfail %d badhdr %d badseq %d\n", - bus->rx_hdrfail, bus->rx_badhdr, bus->rx_badseq); - bcm_bprintf(strbuf, "fc_rcvd %d, fc_xoff %d, fc_xon %d\n", bus->fc_rcvd, - bus->fc_xoff, bus->fc_xon); - bcm_bprintf(strbuf, "rxglomfail %d, rxglomframes %d, rxglompkts %d\n", - bus->rxglomfail, bus->rxglomframes, bus->rxglompkts); - bcm_bprintf(strbuf, "f2rx (hdrs/data) %d (%d/%d), f2tx %d f1regs %d\n", - (bus->f2rxhdrs + bus->f2rxdata), bus->f2rxhdrs, - bus->f2rxdata, bus->f2txdata, bus->f1regdata); - { - dhd_dump_pct(strbuf, "\nRx: pkts/f2rd", bus->dhd->rx_packets, - (bus->f2rxhdrs + bus->f2rxdata)); - dhd_dump_pct(strbuf, ", pkts/f1sd", bus->dhd->rx_packets, - bus->f1regdata); - dhd_dump_pct(strbuf, ", pkts/sd", bus->dhd->rx_packets, - (bus->f2rxhdrs + bus->f2rxdata + bus->f1regdata)); - dhd_dump_pct(strbuf, ", pkts/int", bus->dhd->rx_packets, - bus->intrcount); - bcm_bprintf(strbuf, "\n"); - - dhd_dump_pct(strbuf, "Rx: glom pct", (100 * bus->rxglompkts), - bus->dhd->rx_packets); - dhd_dump_pct(strbuf, ", pkts/glom", bus->rxglompkts, - bus->rxglomframes); - bcm_bprintf(strbuf, "\n"); - - dhd_dump_pct(strbuf, "Tx: pkts/f2wr", bus->dhd->tx_packets, - bus->f2txdata); - dhd_dump_pct(strbuf, ", pkts/f1sd", bus->dhd->tx_packets, - bus->f1regdata); - dhd_dump_pct(strbuf, ", pkts/sd", bus->dhd->tx_packets, - (bus->f2txdata + bus->f1regdata)); - dhd_dump_pct(strbuf, ", pkts/int", bus->dhd->tx_packets, - bus->intrcount); - bcm_bprintf(strbuf, "\n"); - - dhd_dump_pct(strbuf, "Total: pkts/f2rw", - (bus->dhd->tx_packets + bus->dhd->rx_packets), - (bus->f2txdata + bus->f2rxhdrs + bus->f2rxdata)); - dhd_dump_pct(strbuf, ", pkts/f1sd", - (bus->dhd->tx_packets + bus->dhd->rx_packets), - bus->f1regdata); - dhd_dump_pct(strbuf, ", pkts/sd", - (bus->dhd->tx_packets + bus->dhd->rx_packets), - (bus->f2txdata + bus->f2rxhdrs + bus->f2rxdata + - bus->f1regdata)); - dhd_dump_pct(strbuf, ", pkts/int", - (bus->dhd->tx_packets + bus->dhd->rx_packets), - bus->intrcount); - bcm_bprintf(strbuf, "\n\n"); - } - -#ifdef SDTEST - if (bus->pktgen_count) { - bcm_bprintf(strbuf, "pktgen config and count:\n"); - bcm_bprintf(strbuf, - "freq %d count %d print %d total %d min %d len %d\n", - bus->pktgen_freq, bus->pktgen_count, - bus->pktgen_print, bus->pktgen_total, - bus->pktgen_minlen, bus->pktgen_maxlen); - bcm_bprintf(strbuf, "send attempts %d rcvd %d fail %d\n", - bus->pktgen_sent, bus->pktgen_rcvd, - bus->pktgen_fail); - } -#endif /* SDTEST */ -#ifdef DHD_DEBUG - bcm_bprintf(strbuf, "dpc_sched %d host interrupt%spending\n", - bus->dpc_sched, - (bcmsdh_intr_pending(bus->sdh) ? " " : " not ")); - bcm_bprintf(strbuf, "blocksize %d roundup %d\n", bus->blocksize, - bus->roundup); -#endif /* DHD_DEBUG */ - bcm_bprintf(strbuf, - "clkstate %d activity %d idletime %d idlecount %d sleeping %d\n", - bus->clkstate, bus->activity, bus->idletime, bus->idlecount, - bus->sleeping); -} - -void dhd_bus_clearcounts(dhd_pub_t *dhdp) -{ - dhd_bus_t *bus = (dhd_bus_t *) dhdp->bus; - - bus->intrcount = bus->lastintrs = bus->spurious = bus->regfails = 0; - bus->rxrtx = bus->rx_toolong = bus->rxc_errors = 0; - bus->rx_hdrfail = bus->rx_badhdr = bus->rx_badseq = 0; - bus->tx_sderrs = bus->fc_rcvd = bus->fc_xoff = bus->fc_xon = 0; - bus->rxglomfail = bus->rxglomframes = bus->rxglompkts = 0; - bus->f2rxhdrs = bus->f2rxdata = bus->f2txdata = bus->f1regdata = 0; -} - -#ifdef SDTEST -static int dhdsdio_pktgen_get(dhd_bus_t *bus, u8 *arg) -{ - dhd_pktgen_t pktgen; - - pktgen.version = DHD_PKTGEN_VERSION; - pktgen.freq = bus->pktgen_freq; - pktgen.count = bus->pktgen_count; - pktgen.print = bus->pktgen_print; - pktgen.total = bus->pktgen_total; - pktgen.minlen = bus->pktgen_minlen; - pktgen.maxlen = bus->pktgen_maxlen; - pktgen.numsent = bus->pktgen_sent; - pktgen.numrcvd = bus->pktgen_rcvd; - pktgen.numfail = bus->pktgen_fail; - pktgen.mode = bus->pktgen_mode; - pktgen.stop = bus->pktgen_stop; - - memcpy(arg, &pktgen, sizeof(pktgen)); - - return 0; -} - -static int dhdsdio_pktgen_set(dhd_bus_t *bus, u8 *arg) -{ - dhd_pktgen_t pktgen; - uint oldcnt, oldmode; - - memcpy(&pktgen, arg, sizeof(pktgen)); - if (pktgen.version != DHD_PKTGEN_VERSION) - return -EINVAL; - - oldcnt = bus->pktgen_count; - oldmode = bus->pktgen_mode; - - bus->pktgen_freq = pktgen.freq; - bus->pktgen_count = pktgen.count; - bus->pktgen_print = pktgen.print; - bus->pktgen_total = pktgen.total; - bus->pktgen_minlen = pktgen.minlen; - bus->pktgen_maxlen = pktgen.maxlen; - bus->pktgen_mode = pktgen.mode; - bus->pktgen_stop = pktgen.stop; - - bus->pktgen_tick = bus->pktgen_ptick = 0; - bus->pktgen_len = max(bus->pktgen_len, bus->pktgen_minlen); - bus->pktgen_len = min(bus->pktgen_len, bus->pktgen_maxlen); - - /* Clear counts for a new pktgen (mode change, or was stopped) */ - if (bus->pktgen_count && (!oldcnt || oldmode != bus->pktgen_mode)) - bus->pktgen_sent = bus->pktgen_rcvd = bus->pktgen_fail = 0; - - return 0; -} -#endif /* SDTEST */ - -static int -dhdsdio_membytes(dhd_bus_t *bus, bool write, u32 address, u8 *data, - uint size) -{ - int bcmerror = 0; - u32 sdaddr; - uint dsize; - - /* Determine initial transfer parameters */ - sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; - if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) - dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); - else - dsize = size; - - /* Set the backplane window to include the start address */ - bcmerror = dhdsdio_set_siaddr_window(bus, address); - if (bcmerror) { - DHD_ERROR(("%s: window change failed\n", __func__)); - goto xfer_done; - } - - /* Do the transfer(s) */ - while (size) { - DHD_INFO(("%s: %s %d bytes at offset 0x%08x in window 0x%08x\n", - __func__, (write ? "write" : "read"), dsize, - sdaddr, (address & SBSDIO_SBWINDOW_MASK))); - bcmerror = - bcmsdh_rwdata(bus->sdh, write, sdaddr, data, dsize); - if (bcmerror) { - DHD_ERROR(("%s: membytes transfer failed\n", __func__)); - break; - } - - /* Adjust for next transfer (if any) */ - size -= dsize; - if (size) { - data += dsize; - address += dsize; - bcmerror = dhdsdio_set_siaddr_window(bus, address); - if (bcmerror) { - DHD_ERROR(("%s: window change failed\n", - __func__)); - break; - } - sdaddr = 0; - dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); - } - } - -xfer_done: - /* Return the window to backplane enumeration space for core access */ - if (dhdsdio_set_siaddr_window(bus, bcmsdh_cur_sbwad(bus->sdh))) { - DHD_ERROR(("%s: FAILED to set window back to 0x%x\n", - __func__, bcmsdh_cur_sbwad(bus->sdh))); - } - - return bcmerror; -} - -#ifdef DHD_DEBUG -static int dhdsdio_readshared(dhd_bus_t *bus, sdpcm_shared_t *sh) -{ - u32 addr; - int rv; - - /* Read last word in memory to determine address of - sdpcm_shared structure */ - rv = dhdsdio_membytes(bus, false, bus->ramsize - 4, (u8 *)&addr, 4); - if (rv < 0) - return rv; - - addr = le32_to_cpu(addr); - - DHD_INFO(("sdpcm_shared address 0x%08X\n", addr)); - - /* - * Check if addr is valid. - * NVRAM length at the end of memory should have been overwritten. - */ - if (addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff)) { - DHD_ERROR(("%s: address (0x%08x) of sdpcm_shared invalid\n", - __func__, addr)); - return -EBADE; - } - - /* Read hndrte_shared structure */ - rv = dhdsdio_membytes(bus, false, addr, (u8 *) sh, - sizeof(sdpcm_shared_t)); - if (rv < 0) - return rv; - - /* Endianness */ - sh->flags = le32_to_cpu(sh->flags); - sh->trap_addr = le32_to_cpu(sh->trap_addr); - sh->assert_exp_addr = le32_to_cpu(sh->assert_exp_addr); - sh->assert_file_addr = le32_to_cpu(sh->assert_file_addr); - sh->assert_line = le32_to_cpu(sh->assert_line); - sh->console_addr = le32_to_cpu(sh->console_addr); - sh->msgtrace_addr = le32_to_cpu(sh->msgtrace_addr); - - if ((sh->flags & SDPCM_SHARED_VERSION_MASK) != SDPCM_SHARED_VERSION) { - DHD_ERROR(("%s: sdpcm_shared version %d in dhd " - "is different than sdpcm_shared version %d in dongle\n", - __func__, SDPCM_SHARED_VERSION, - sh->flags & SDPCM_SHARED_VERSION_MASK)); - return -EBADE; - } - - return 0; -} - -static int dhdsdio_checkdied(dhd_bus_t *bus, u8 *data, uint size) -{ - int bcmerror = 0; - uint msize = 512; - char *mbuffer = NULL; - uint maxstrlen = 256; - char *str = NULL; - trap_t tr; - sdpcm_shared_t sdpcm_shared; - struct bcmstrbuf strbuf; - - DHD_TRACE(("%s: Enter\n", __func__)); - - if (data == NULL) { - /* - * Called after a rx ctrl timeout. "data" is NULL. - * allocate memory to trace the trap or assert. - */ - size = msize; - mbuffer = data = kmalloc(msize, GFP_ATOMIC); - if (mbuffer == NULL) { - DHD_ERROR(("%s: kmalloc(%d) failed\n", __func__, - msize)); - bcmerror = -ENOMEM; - goto done; - } - } - - str = kmalloc(maxstrlen, GFP_ATOMIC); - if (str == NULL) { - DHD_ERROR(("%s: kmalloc(%d) failed\n", __func__, maxstrlen)); - bcmerror = -ENOMEM; - goto done; - } - - bcmerror = dhdsdio_readshared(bus, &sdpcm_shared); - if (bcmerror < 0) - goto done; - - bcm_binit(&strbuf, data, size); - - bcm_bprintf(&strbuf, - "msgtrace address : 0x%08X\nconsole address : 0x%08X\n", - sdpcm_shared.msgtrace_addr, sdpcm_shared.console_addr); - - if ((sdpcm_shared.flags & SDPCM_SHARED_ASSERT_BUILT) == 0) { - /* NOTE: Misspelled assert is intentional - DO NOT FIX. - * (Avoids conflict with real asserts for programmatic - * parsing of output.) - */ - bcm_bprintf(&strbuf, "Assrt not built in dongle\n"); - } - - if ((sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP)) == - 0) { - /* NOTE: Misspelled assert is intentional - DO NOT FIX. - * (Avoids conflict with real asserts for programmatic - * parsing of output.) - */ - bcm_bprintf(&strbuf, "No trap%s in dongle", - (sdpcm_shared.flags & SDPCM_SHARED_ASSERT_BUILT) - ? "/assrt" : ""); - } else { - if (sdpcm_shared.flags & SDPCM_SHARED_ASSERT) { - /* Download assert */ - bcm_bprintf(&strbuf, "Dongle assert"); - if (sdpcm_shared.assert_exp_addr != 0) { - str[0] = '\0'; - bcmerror = dhdsdio_membytes(bus, false, - sdpcm_shared.assert_exp_addr, - (u8 *) str, maxstrlen); - if (bcmerror < 0) - goto done; - - str[maxstrlen - 1] = '\0'; - bcm_bprintf(&strbuf, " expr \"%s\"", str); - } - - if (sdpcm_shared.assert_file_addr != 0) { - str[0] = '\0'; - bcmerror = dhdsdio_membytes(bus, false, - sdpcm_shared.assert_file_addr, - (u8 *) str, maxstrlen); - if (bcmerror < 0) - goto done; - - str[maxstrlen - 1] = '\0'; - bcm_bprintf(&strbuf, " file \"%s\"", str); - } - - bcm_bprintf(&strbuf, " line %d ", - sdpcm_shared.assert_line); - } - - if (sdpcm_shared.flags & SDPCM_SHARED_TRAP) { - bcmerror = dhdsdio_membytes(bus, false, - sdpcm_shared.trap_addr, (u8 *)&tr, - sizeof(trap_t)); - if (bcmerror < 0) - goto done; - - bcm_bprintf(&strbuf, - "Dongle trap type 0x%x @ epc 0x%x, cpsr 0x%x, spsr 0x%x, sp 0x%x," - "lp 0x%x, rpc 0x%x Trap offset 0x%x, " - "r0 0x%x, r1 0x%x, r2 0x%x, r3 0x%x, r4 0x%x, r5 0x%x, r6 0x%x, r7 0x%x\n", - tr.type, tr.epc, tr.cpsr, tr.spsr, tr.r13, - tr.r14, tr.pc, sdpcm_shared.trap_addr, - tr.r0, tr.r1, tr.r2, tr.r3, tr.r4, tr.r5, - tr.r6, tr.r7); - } - } - - if (sdpcm_shared.flags & (SDPCM_SHARED_ASSERT | SDPCM_SHARED_TRAP)) - DHD_ERROR(("%s: %s\n", __func__, strbuf.origbuf)); - -#ifdef DHD_DEBUG - if (sdpcm_shared.flags & SDPCM_SHARED_TRAP) { - /* Mem dump to a file on device */ - dhdsdio_mem_dump(bus); - } -#endif /* DHD_DEBUG */ - -done: - kfree(mbuffer); - kfree(str); - - return bcmerror; -} - -static int dhdsdio_mem_dump(dhd_bus_t *bus) -{ - int ret = 0; - int size; /* Full mem size */ - int start = 0; /* Start address */ - int read_size = 0; /* Read size of each iteration */ - u8 *buf = NULL, *databuf = NULL; - - /* Get full mem size */ - size = bus->ramsize; - buf = kmalloc(size, GFP_ATOMIC); - if (!buf) { - DHD_ERROR(("%s: Out of memory (%d bytes)\n", __func__, size)); - return -1; - } - - /* Read mem content */ - printk(KERN_DEBUG "Dump dongle memory"); - databuf = buf; - while (size) { - read_size = min(MEMBLOCK, size); - ret = dhdsdio_membytes(bus, false, start, databuf, read_size); - if (ret) { - DHD_ERROR(("%s: Error membytes %d\n", __func__, ret)); - kfree(buf); - return -1; - } - printk("."); - - /* Decrement size and increment start address */ - size -= read_size; - start += read_size; - databuf += read_size; - } - printk(KERN_DEBUG "Done\n"); - - /* free buf before return !!! */ - if (write_to_file(bus->dhd, buf, bus->ramsize)) { - DHD_ERROR(("%s: Error writing to files\n", __func__)); - return -1; - } - - /* buf free handled in write_to_file, not here */ - return 0; -} - -#define CONSOLE_LINE_MAX 192 - -static int dhdsdio_readconsole(dhd_bus_t *bus) -{ - dhd_console_t *c = &bus->console; - u8 line[CONSOLE_LINE_MAX], ch; - u32 n, idx, addr; - int rv; - - /* Don't do anything until FWREADY updates console address */ - if (bus->console_addr == 0) - return 0; - - /* Read console log struct */ - addr = bus->console_addr + offsetof(hndrte_cons_t, log); - rv = dhdsdio_membytes(bus, false, addr, (u8 *)&c->log, - sizeof(c->log)); - if (rv < 0) - return rv; - - /* Allocate console buffer (one time only) */ - if (c->buf == NULL) { - c->bufsize = le32_to_cpu(c->log.buf_size); - c->buf = kmalloc(c->bufsize, GFP_ATOMIC); - if (c->buf == NULL) - return -ENOMEM; - } - - idx = le32_to_cpu(c->log.idx); - - /* Protect against corrupt value */ - if (idx > c->bufsize) - return -EBADE; - - /* Skip reading the console buffer if the index pointer - has not moved */ - if (idx == c->last) - return 0; - - /* Read the console buffer */ - addr = le32_to_cpu(c->log.buf); - rv = dhdsdio_membytes(bus, false, addr, c->buf, c->bufsize); - if (rv < 0) - return rv; - - while (c->last != idx) { - for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) { - if (c->last == idx) { - /* This would output a partial line. - * Instead, back up - * the buffer pointer and output this - * line next time around. - */ - if (c->last >= n) - c->last -= n; - else - c->last = c->bufsize - n; - goto break2; - } - ch = c->buf[c->last]; - c->last = (c->last + 1) % c->bufsize; - if (ch == '\n') - break; - line[n] = ch; - } - - if (n > 0) { - if (line[n - 1] == '\r') - n--; - line[n] = 0; - printk(KERN_DEBUG "CONSOLE: %s\n", line); - } - } -break2: - - return 0; -} -#endif /* DHD_DEBUG */ - -int dhdsdio_downloadvars(dhd_bus_t *bus, void *arg, int len) -{ - int bcmerror = 0; - - DHD_TRACE(("%s: Enter\n", __func__)); - - /* Basic sanity checks */ - if (bus->dhd->up) { - bcmerror = -EISCONN; - goto err; - } - if (!len) { - bcmerror = -EOVERFLOW; - goto err; - } - - /* Free the old ones and replace with passed variables */ - kfree(bus->vars); - - bus->vars = kmalloc(len, GFP_ATOMIC); - bus->varsz = bus->vars ? len : 0; - if (bus->vars == NULL) { - bcmerror = -ENOMEM; - goto err; - } - - /* Copy the passed variables, which should include the - terminating double-null */ - memcpy(bus->vars, arg, bus->varsz); -err: - return bcmerror; -} - -static int -dhdsdio_doiovar(dhd_bus_t *bus, const bcm_iovar_t *vi, u32 actionid, - const char *name, void *params, int plen, void *arg, int len, - int val_size) -{ - int bcmerror = 0; - s32 int_val = 0; - bool bool_val = 0; - - DHD_TRACE(("%s: Enter, action %d name %s params %p plen %d arg %p " - "len %d val_size %d\n", - __func__, actionid, name, params, plen, arg, len, val_size)); - - bcmerror = bcm_iovar_lencheck(vi, arg, len, IOV_ISSET(actionid)); - if (bcmerror != 0) - goto exit; - - if (plen >= (int)sizeof(int_val)) - memcpy(&int_val, params, sizeof(int_val)); - - bool_val = (int_val != 0) ? true : false; - - /* Some ioctls use the bus */ - dhd_os_sdlock(bus->dhd); - - /* Check if dongle is in reset. If so, only allow DEVRESET iovars */ - if (bus->dhd->dongle_reset && !(actionid == IOV_SVAL(IOV_DEVRESET) || - actionid == IOV_GVAL(IOV_DEVRESET))) { - bcmerror = -EPERM; - goto exit; - } - - /* Handle sleep stuff before any clock mucking */ - if (vi->varid == IOV_SLEEP) { - if (IOV_ISSET(actionid)) { - bcmerror = dhdsdio_bussleep(bus, bool_val); - } else { - int_val = (s32) bus->sleeping; - memcpy(arg, &int_val, val_size); - } - goto exit; - } - - /* Request clock to allow SDIO accesses */ - if (!bus->dhd->dongle_reset) { - BUS_WAKE(bus); - dhdsdio_clkctl(bus, CLK_AVAIL, false); - } - - switch (actionid) { - case IOV_GVAL(IOV_INTR): - int_val = (s32) bus->intr; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_INTR): - bus->intr = bool_val; - bus->intdis = false; - if (bus->dhd->up) { - if (bus->intr) { - DHD_INTR(("%s: enable SDIO device interrupts\n", - __func__)); - bcmsdh_intr_enable(bus->sdh); - } else { - DHD_INTR(("%s: disable SDIO interrupts\n", - __func__)); - bcmsdh_intr_disable(bus->sdh); - } - } - break; - - case IOV_GVAL(IOV_POLLRATE): - int_val = (s32) bus->pollrate; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_POLLRATE): - bus->pollrate = (uint) int_val; - bus->poll = (bus->pollrate != 0); - break; - - case IOV_GVAL(IOV_IDLETIME): - int_val = bus->idletime; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_IDLETIME): - if ((int_val < 0) && (int_val != DHD_IDLE_IMMEDIATE)) - bcmerror = -EINVAL; - else - bus->idletime = int_val; - break; - - case IOV_GVAL(IOV_IDLECLOCK): - int_val = (s32) bus->idleclock; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_IDLECLOCK): - bus->idleclock = int_val; - break; - - case IOV_GVAL(IOV_SD1IDLE): - int_val = (s32) sd1idle; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_SD1IDLE): - sd1idle = bool_val; - break; - - case IOV_SVAL(IOV_MEMBYTES): - case IOV_GVAL(IOV_MEMBYTES): - { - u32 address; - uint size, dsize; - u8 *data; - - bool set = (actionid == IOV_SVAL(IOV_MEMBYTES)); - - ASSERT(plen >= 2 * sizeof(int)); - - address = (u32) int_val; - memcpy(&int_val, (char *)params + sizeof(int_val), - sizeof(int_val)); - size = (uint) int_val; - - /* Do some validation */ - dsize = set ? plen - (2 * sizeof(int)) : len; - if (dsize < size) { - DHD_ERROR(("%s: error on %s membytes, addr " - "0x%08x size %d dsize %d\n", - __func__, (set ? "set" : "get"), - address, size, dsize)); - bcmerror = -EINVAL; - break; - } - - DHD_INFO(("%s: Request to %s %d bytes at address " - "0x%08x\n", - __func__, (set ? "write" : "read"), size, address)); - - /* If we know about SOCRAM, check for a fit */ - if ((bus->orig_ramsize) && - ((address > bus->orig_ramsize) - || (address + size > bus->orig_ramsize))) { - DHD_ERROR(("%s: ramsize 0x%08x doesn't have %d " - "bytes at 0x%08x\n", - __func__, bus->orig_ramsize, size, address)); - bcmerror = -EINVAL; - break; - } - - /* Generate the actual data pointer */ - data = - set ? (u8 *) params + - 2 * sizeof(int) : (u8 *) arg; - - /* Call to do the transfer */ - bcmerror = - dhdsdio_membytes(bus, set, address, data, size); - - break; - } - - case IOV_GVAL(IOV_MEMSIZE): - int_val = (s32) bus->ramsize; - memcpy(arg, &int_val, val_size); - break; - - case IOV_GVAL(IOV_SDIOD_DRIVE): - int_val = (s32) dhd_sdiod_drive_strength; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_SDIOD_DRIVE): - dhd_sdiod_drive_strength = int_val; - dhdsdio_sdiod_drive_strength_init(bus, - dhd_sdiod_drive_strength); - break; - - case IOV_SVAL(IOV_DOWNLOAD): - bcmerror = dhdsdio_download_state(bus, bool_val); - break; - - case IOV_SVAL(IOV_VARS): - bcmerror = dhdsdio_downloadvars(bus, arg, len); - break; - - case IOV_GVAL(IOV_READAHEAD): - int_val = (s32) dhd_readahead; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_READAHEAD): - if (bool_val && !dhd_readahead) - bus->nextlen = 0; - dhd_readahead = bool_val; - break; - - case IOV_GVAL(IOV_SDRXCHAIN): - int_val = (s32) bus->use_rxchain; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_SDRXCHAIN): - if (bool_val && !bus->sd_rxchain) - bcmerror = -ENOTSUPP; - else - bus->use_rxchain = bool_val; - break; - case IOV_GVAL(IOV_ALIGNCTL): - int_val = (s32) dhd_alignctl; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_ALIGNCTL): - dhd_alignctl = bool_val; - break; - - case IOV_GVAL(IOV_SDALIGN): - int_val = DHD_SDALIGN; - memcpy(arg, &int_val, val_size); - break; - -#ifdef DHD_DEBUG - case IOV_GVAL(IOV_VARS): - if (bus->varsz < (uint) len) - memcpy(arg, bus->vars, bus->varsz); - else - bcmerror = -EOVERFLOW; - break; -#endif /* DHD_DEBUG */ - -#ifdef DHD_DEBUG - case IOV_GVAL(IOV_SDREG): - { - sdreg_t *sd_ptr; - u32 addr, size; - - sd_ptr = (sdreg_t *) params; - - addr = (unsigned long)bus->regs + sd_ptr->offset; - size = sd_ptr->func; - int_val = (s32) bcmsdh_reg_read(bus->sdh, addr, size); - if (bcmsdh_regfail(bus->sdh)) - bcmerror = -EIO; - memcpy(arg, &int_val, sizeof(s32)); - break; - } - - case IOV_SVAL(IOV_SDREG): - { - sdreg_t *sd_ptr; - u32 addr, size; - - sd_ptr = (sdreg_t *) params; - - addr = (unsigned long)bus->regs + sd_ptr->offset; - size = sd_ptr->func; - bcmsdh_reg_write(bus->sdh, addr, size, sd_ptr->value); - if (bcmsdh_regfail(bus->sdh)) - bcmerror = -EIO; - break; - } - - /* Same as above, but offset is not backplane - (not SDIO core) */ - case IOV_GVAL(IOV_SBREG): - { - sdreg_t sdreg; - u32 addr, size; - - memcpy(&sdreg, params, sizeof(sdreg)); - - addr = SI_ENUM_BASE + sdreg.offset; - size = sdreg.func; - int_val = (s32) bcmsdh_reg_read(bus->sdh, addr, size); - if (bcmsdh_regfail(bus->sdh)) - bcmerror = -EIO; - memcpy(arg, &int_val, sizeof(s32)); - break; - } - - case IOV_SVAL(IOV_SBREG): - { - sdreg_t sdreg; - u32 addr, size; - - memcpy(&sdreg, params, sizeof(sdreg)); - - addr = SI_ENUM_BASE + sdreg.offset; - size = sdreg.func; - bcmsdh_reg_write(bus->sdh, addr, size, sdreg.value); - if (bcmsdh_regfail(bus->sdh)) - bcmerror = -EIO; - break; - } - - case IOV_GVAL(IOV_SDCIS): - { - *(char *)arg = 0; - - strcat(arg, "\nFunc 0\n"); - bcmsdh_cis_read(bus->sdh, 0x10, - (u8 *) arg + strlen(arg), - SBSDIO_CIS_SIZE_LIMIT); - strcat(arg, "\nFunc 1\n"); - bcmsdh_cis_read(bus->sdh, 0x11, - (u8 *) arg + strlen(arg), - SBSDIO_CIS_SIZE_LIMIT); - strcat(arg, "\nFunc 2\n"); - bcmsdh_cis_read(bus->sdh, 0x12, - (u8 *) arg + strlen(arg), - SBSDIO_CIS_SIZE_LIMIT); - break; - } - - case IOV_GVAL(IOV_FORCEEVEN): - int_val = (s32) forcealign; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_FORCEEVEN): - forcealign = bool_val; - break; - - case IOV_GVAL(IOV_TXBOUND): - int_val = (s32) dhd_txbound; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_TXBOUND): - dhd_txbound = (uint) int_val; - break; - - case IOV_GVAL(IOV_RXBOUND): - int_val = (s32) dhd_rxbound; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_RXBOUND): - dhd_rxbound = (uint) int_val; - break; - - case IOV_GVAL(IOV_TXMINMAX): - int_val = (s32) dhd_txminmax; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_TXMINMAX): - dhd_txminmax = (uint) int_val; - break; -#endif /* DHD_DEBUG */ - -#ifdef SDTEST - case IOV_GVAL(IOV_EXTLOOP): - int_val = (s32) bus->ext_loop; - memcpy(arg, &int_val, val_size); - break; - - case IOV_SVAL(IOV_EXTLOOP): - bus->ext_loop = bool_val; - break; - - case IOV_GVAL(IOV_PKTGEN): - bcmerror = dhdsdio_pktgen_get(bus, arg); - break; - - case IOV_SVAL(IOV_PKTGEN): - bcmerror = dhdsdio_pktgen_set(bus, arg); - break; -#endif /* SDTEST */ - - case IOV_SVAL(IOV_DEVRESET): - DHD_TRACE(("%s: Called set IOV_DEVRESET=%d dongle_reset=%d " - "busstate=%d\n", - __func__, bool_val, bus->dhd->dongle_reset, - bus->dhd->busstate)); - - dhd_bus_devreset(bus->dhd, (u8) bool_val); - - break; - - case IOV_GVAL(IOV_DEVRESET): - DHD_TRACE(("%s: Called get IOV_DEVRESET\n", __func__)); - - /* Get its status */ - int_val = (bool) bus->dhd->dongle_reset; - memcpy(arg, &int_val, val_size); - - break; - - default: - bcmerror = -ENOTSUPP; - break; - } - -exit: - if ((bus->idletime == DHD_IDLE_IMMEDIATE) && !bus->dpc_sched) { - bus->activity = false; - dhdsdio_clkctl(bus, CLK_NONE, true); - } - - dhd_os_sdunlock(bus->dhd); - - if (actionid == IOV_SVAL(IOV_DEVRESET) && bool_val == false) - dhd_preinit_ioctls((dhd_pub_t *) bus->dhd); - - return bcmerror; -} - -static int dhdsdio_write_vars(dhd_bus_t *bus) -{ - int bcmerror = 0; - u32 varsize; - u32 varaddr; - u8 *vbuffer; - u32 varsizew; -#ifdef DHD_DEBUG - char *nvram_ularray; -#endif /* DHD_DEBUG */ - - /* Even if there are no vars are to be written, we still - need to set the ramsize. */ - varsize = bus->varsz ? roundup(bus->varsz, 4) : 0; - varaddr = (bus->ramsize - 4) - varsize; - - if (bus->vars) { - vbuffer = kzalloc(varsize, GFP_ATOMIC); - if (!vbuffer) - return -ENOMEM; - - memcpy(vbuffer, bus->vars, bus->varsz); - - /* Write the vars list */ - bcmerror = - dhdsdio_membytes(bus, true, varaddr, vbuffer, varsize); -#ifdef DHD_DEBUG - /* Verify NVRAM bytes */ - DHD_INFO(("Compare NVRAM dl & ul; varsize=%d\n", varsize)); - nvram_ularray = kmalloc(varsize, GFP_ATOMIC); - if (!nvram_ularray) - return -ENOMEM; - - /* Upload image to verify downloaded contents. */ - memset(nvram_ularray, 0xaa, varsize); - - /* Read the vars list to temp buffer for comparison */ - bcmerror = - dhdsdio_membytes(bus, false, varaddr, nvram_ularray, - varsize); - if (bcmerror) { - DHD_ERROR(("%s: error %d on reading %d nvram bytes at " - "0x%08x\n", __func__, bcmerror, varsize, varaddr)); - } - /* Compare the org NVRAM with the one read from RAM */ - if (memcmp(vbuffer, nvram_ularray, varsize)) { - DHD_ERROR(("%s: Downloaded NVRAM image is corrupted.\n", - __func__)); - } else - DHD_ERROR(("%s: Download/Upload/Compare of NVRAM ok.\n", - __func__)); - - kfree(nvram_ularray); -#endif /* DHD_DEBUG */ - - kfree(vbuffer); - } - - /* adjust to the user specified RAM */ - DHD_INFO(("Physical memory size: %d, usable memory size: %d\n", - bus->orig_ramsize, bus->ramsize)); - DHD_INFO(("Vars are at %d, orig varsize is %d\n", varaddr, varsize)); - varsize = ((bus->orig_ramsize - 4) - varaddr); - - /* - * Determine the length token: - * Varsize, converted to words, in lower 16-bits, checksum - * in upper 16-bits. - */ - if (bcmerror) { - varsizew = 0; - } else { - varsizew = varsize / 4; - varsizew = (~varsizew << 16) | (varsizew & 0x0000FFFF); - varsizew = cpu_to_le32(varsizew); - } - - DHD_INFO(("New varsize is %d, length token=0x%08x\n", varsize, - varsizew)); - - /* Write the length token to the last word */ - bcmerror = dhdsdio_membytes(bus, true, (bus->orig_ramsize - 4), - (u8 *)&varsizew, 4); - - return bcmerror; -} - -static int dhdsdio_download_state(dhd_bus_t *bus, bool enter) -{ - uint retries; - u32 regdata; - int bcmerror = 0; - - /* To enter download state, disable ARM and reset SOCRAM. - * To exit download state, simply reset ARM (default is RAM boot). - */ - if (enter) { - bus->alp_only = true; - - dhdsdio_chip_disablecore(bus->sdh, bus->ci->armcorebase); - - dhdsdio_chip_resetcore(bus->sdh, bus->ci->ramcorebase); - - /* Clear the top bit of memory */ - if (bus->ramsize) { - u32 zeros = 0; - dhdsdio_membytes(bus, true, bus->ramsize - 4, - (u8 *)&zeros, 4); - } - } else { - regdata = bcmsdh_reg_read(bus->sdh, - CORE_SB(bus->ci->ramcorebase, sbtmstatelow), 4); - regdata &= (SBTML_RESET | SBTML_REJ_MASK | - (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); - if ((SICF_CLOCK_EN << SBTML_SICF_SHIFT) != regdata) { - DHD_ERROR(("%s: SOCRAM core is down after reset?\n", - __func__)); - bcmerror = -EBADE; - goto fail; - } - - bcmerror = dhdsdio_write_vars(bus); - if (bcmerror) { - DHD_ERROR(("%s: no vars written to RAM\n", __func__)); - bcmerror = 0; - } - - W_SDREG(0xFFFFFFFF, &bus->regs->intstatus, retries); - - dhdsdio_chip_resetcore(bus->sdh, bus->ci->armcorebase); - - /* Allow HT Clock now that the ARM is running. */ - bus->alp_only = false; - - bus->dhd->busstate = DHD_BUS_LOAD; - } -fail: - return bcmerror; -} - -int -dhd_bus_iovar_op(dhd_pub_t *dhdp, const char *name, - void *params, int plen, void *arg, int len, bool set) -{ - dhd_bus_t *bus = dhdp->bus; - const bcm_iovar_t *vi = NULL; - int bcmerror = 0; - int val_size; - u32 actionid; - - DHD_TRACE(("%s: Enter\n", __func__)); - - ASSERT(name); - ASSERT(len >= 0); - - /* Get MUST have return space */ - ASSERT(set || (arg && len)); - - /* Set does NOT take qualifiers */ - ASSERT(!set || (!params && !plen)); - - /* Look up var locally; if not found pass to host driver */ - vi = bcm_iovar_lookup(dhdsdio_iovars, name); - if (vi == NULL) { - dhd_os_sdlock(bus->dhd); - - BUS_WAKE(bus); - - /* Turn on clock in case SD command needs backplane */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - - bcmerror = - bcmsdh_iovar_op(bus->sdh, name, params, plen, arg, len, - set); - - /* Check for bus configuration changes of interest */ - - /* If it was divisor change, read the new one */ - if (set && strcmp(name, "sd_divisor") == 0) { - if (bcmsdh_iovar_op(bus->sdh, "sd_divisor", NULL, 0, - &bus->sd_divisor, sizeof(s32), - false) != 0) { - bus->sd_divisor = -1; - DHD_ERROR(("%s: fail on %s get\n", __func__, - name)); - } else { - DHD_INFO(("%s: noted %s update, value now %d\n", - __func__, name, bus->sd_divisor)); - } - } - /* If it was a mode change, read the new one */ - if (set && strcmp(name, "sd_mode") == 0) { - if (bcmsdh_iovar_op(bus->sdh, "sd_mode", NULL, 0, - &bus->sd_mode, sizeof(s32), - false) != 0) { - bus->sd_mode = -1; - DHD_ERROR(("%s: fail on %s get\n", __func__, - name)); - } else { - DHD_INFO(("%s: noted %s update, value now %d\n", - __func__, name, bus->sd_mode)); - } - } - /* Similar check for blocksize change */ - if (set && strcmp(name, "sd_blocksize") == 0) { - s32 fnum = 2; - if (bcmsdh_iovar_op - (bus->sdh, "sd_blocksize", &fnum, sizeof(s32), - &bus->blocksize, sizeof(s32), - false) != 0) { - bus->blocksize = 0; - DHD_ERROR(("%s: fail on %s get\n", __func__, - "sd_blocksize")); - } else { - DHD_INFO(("%s: noted %s update, value now %d\n", - __func__, "sd_blocksize", - bus->blocksize)); - } - } - bus->roundup = min(max_roundup, bus->blocksize); - - if ((bus->idletime == DHD_IDLE_IMMEDIATE) && !bus->dpc_sched) { - bus->activity = false; - dhdsdio_clkctl(bus, CLK_NONE, true); - } - - dhd_os_sdunlock(bus->dhd); - goto exit; - } - - DHD_CTL(("%s: %s %s, len %d plen %d\n", __func__, - name, (set ? "set" : "get"), len, plen)); - - /* set up 'params' pointer in case this is a set command so that - * the convenience int and bool code can be common to set and get - */ - if (params == NULL) { - params = arg; - plen = len; - } - - if (vi->type == IOVT_VOID) - val_size = 0; - else if (vi->type == IOVT_BUFFER) - val_size = len; - else - /* all other types are integer sized */ - val_size = sizeof(int); - - actionid = set ? IOV_SVAL(vi->varid) : IOV_GVAL(vi->varid); - bcmerror = - dhdsdio_doiovar(bus, vi, actionid, name, params, plen, arg, len, - val_size); - -exit: - return bcmerror; -} - -void dhd_bus_stop(struct dhd_bus *bus, bool enforce_mutex) -{ - u32 local_hostintmask; - u8 saveclk; - uint retries; - int err; - - DHD_TRACE(("%s: Enter\n", __func__)); - - if (enforce_mutex) - dhd_os_sdlock(bus->dhd); - - BUS_WAKE(bus); - - /* Enable clock for device interrupts */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - - /* Disable and clear interrupts at the chip level also */ - W_SDREG(0, &bus->regs->hostintmask, retries); - local_hostintmask = bus->hostintmask; - bus->hostintmask = 0; - - /* Change our idea of bus state */ - bus->dhd->busstate = DHD_BUS_DOWN; - - /* Force clocks on backplane to be sure F2 interrupt propagates */ - saveclk = - bcmsdh_cfg_read(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - &err); - if (!err) { - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - (saveclk | SBSDIO_FORCE_HT), &err); - } - if (err) { - DHD_ERROR(("%s: Failed to force clock for F2: err %d\n", - __func__, err)); - } - - /* Turn off the bus (F2), free any pending packets */ - DHD_INTR(("%s: disable SDIO interrupts\n", __func__)); - bcmsdh_intr_disable(bus->sdh); - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_0, SDIOD_CCCR_IOEN, - SDIO_FUNC_ENABLE_1, NULL); - - /* Clear any pending interrupts now that F2 is disabled */ - W_SDREG(local_hostintmask, &bus->regs->intstatus, retries); - - /* Turn off the backplane clock (only) */ - dhdsdio_clkctl(bus, CLK_SDONLY, false); - - /* Clear the data packet queues */ - bcm_pktq_flush(&bus->txq, true, NULL, NULL); - - /* Clear any held glomming stuff */ - if (bus->glomd) - bcm_pkt_buf_free_skb(bus->glomd); - - if (bus->glom) - bcm_pkt_buf_free_skb(bus->glom); - - bus->glom = bus->glomd = NULL; - - /* Clear rx control and wake any waiters */ - bus->rxlen = 0; - dhd_os_ioctl_resp_wake(bus->dhd); - - /* Reset some F2 state stuff */ - bus->rxskip = false; - bus->tx_seq = bus->rx_seq = 0; - - if (enforce_mutex) - dhd_os_sdunlock(bus->dhd); -} - -int dhd_bus_init(dhd_pub_t *dhdp, bool enforce_mutex) -{ - dhd_bus_t *bus = dhdp->bus; - dhd_timeout_t tmo; - uint retries = 0; - u8 ready, enable; - int err, ret = 0; - u8 saveclk; - - DHD_TRACE(("%s: Enter\n", __func__)); - - ASSERT(bus->dhd); - if (!bus->dhd) - return 0; - - if (enforce_mutex) - dhd_os_sdlock(bus->dhd); - - /* Make sure backplane clock is on, needed to generate F2 interrupt */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - if (bus->clkstate != CLK_AVAIL) - goto exit; - - /* Force clocks on backplane to be sure F2 interrupt propagates */ - saveclk = - bcmsdh_cfg_read(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - &err); - if (!err) { - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - (saveclk | SBSDIO_FORCE_HT), &err); - } - if (err) { - DHD_ERROR(("%s: Failed to force clock for F2: err %d\n", - __func__, err)); - goto exit; - } - - /* Enable function 2 (frame transfers) */ - W_SDREG((SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT), - &bus->regs->tosbmailboxdata, retries); - enable = (SDIO_FUNC_ENABLE_1 | SDIO_FUNC_ENABLE_2); - - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_0, SDIOD_CCCR_IOEN, enable, NULL); - - /* Give the dongle some time to do its thing and set IOR2 */ - dhd_timeout_start(&tmo, DHD_WAIT_F2RDY * 1000); - - ready = 0; - while (ready != enable && !dhd_timeout_expired(&tmo)) - ready = - bcmsdh_cfg_read(bus->sdh, SDIO_FUNC_0, SDIOD_CCCR_IORDY, - NULL); - - DHD_INFO(("%s: enable 0x%02x, ready 0x%02x (waited %uus)\n", - __func__, enable, ready, tmo.elapsed)); - - /* If F2 successfully enabled, set core and enable interrupts */ - if (ready == enable) { - /* Set up the interrupt mask and enable interrupts */ - bus->hostintmask = HOSTINTMASK; - W_SDREG(bus->hostintmask, - (unsigned int *)CORE_BUS_REG(bus->ci->buscorebase, - hostintmask), retries); - - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_WATERMARK, - (u8) watermark, &err); - - /* Set bus state according to enable result */ - dhdp->busstate = DHD_BUS_DATA; - - /* bcmsdh_intr_unmask(bus->sdh); */ - - bus->intdis = false; - if (bus->intr) { - DHD_INTR(("%s: enable SDIO device interrupts\n", - __func__)); - bcmsdh_intr_enable(bus->sdh); - } else { - DHD_INTR(("%s: disable SDIO interrupts\n", __func__)); - bcmsdh_intr_disable(bus->sdh); - } - - } - - else { - /* Disable F2 again */ - enable = SDIO_FUNC_ENABLE_1; - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_0, SDIOD_CCCR_IOEN, enable, - NULL); - } - - /* Restore previous clock setting */ - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - saveclk, &err); - - /* If we didn't come up, turn off backplane clock */ - if (dhdp->busstate != DHD_BUS_DATA) - dhdsdio_clkctl(bus, CLK_NONE, false); - -exit: - if (enforce_mutex) - dhd_os_sdunlock(bus->dhd); - - return ret; -} - -static void dhdsdio_rxfail(dhd_bus_t *bus, bool abort, bool rtx) -{ - bcmsdh_info_t *sdh = bus->sdh; - sdpcmd_regs_t *regs = bus->regs; - uint retries = 0; - u16 lastrbc; - u8 hi, lo; - int err; - - DHD_ERROR(("%s: %sterminate frame%s\n", __func__, - (abort ? "abort command, " : ""), - (rtx ? ", send NAK" : ""))); - - if (abort) - bcmsdh_abort(sdh, SDIO_FUNC_2); - - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_FRAMECTRL, SFC_RF_TERM, - &err); - bus->f1regdata++; - - /* Wait until the packet has been flushed (device/FIFO stable) */ - for (lastrbc = retries = 0xffff; retries > 0; retries--) { - hi = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_RFRAMEBCHI, - NULL); - lo = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_RFRAMEBCLO, - NULL); - bus->f1regdata += 2; - - if ((hi == 0) && (lo == 0)) - break; - - if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) { - DHD_ERROR(("%s: count growing: last 0x%04x now " - "0x%04x\n", - __func__, lastrbc, ((hi << 8) + lo))); - } - lastrbc = (hi << 8) + lo; - } - - if (!retries) { - DHD_ERROR(("%s: count never zeroed: last 0x%04x\n", - __func__, lastrbc)); - } else { - DHD_INFO(("%s: flush took %d iterations\n", __func__, - (0xffff - retries))); - } - - if (rtx) { - bus->rxrtx++; - W_SDREG(SMB_NAK, ®s->tosbmailbox, retries); - bus->f1regdata++; - if (retries <= retry_limit) - bus->rxskip = true; - } - - /* Clear partial in any case */ - bus->nextlen = 0; - - /* If we can't reach the device, signal failure */ - if (err || bcmsdh_regfail(sdh)) - bus->dhd->busstate = DHD_BUS_DOWN; -} - -static void -dhdsdio_read_control(dhd_bus_t *bus, u8 *hdr, uint len, uint doff) -{ - bcmsdh_info_t *sdh = bus->sdh; - uint rdlen, pad; - - int sdret; - - DHD_TRACE(("%s: Enter\n", __func__)); - - /* Control data already received in aligned rxctl */ - if ((bus->bus == SPI_BUS) && (!bus->usebufpool)) - goto gotpkt; - - ASSERT(bus->rxbuf); - /* Set rxctl for frame (w/optional alignment) */ - bus->rxctl = bus->rxbuf; - if (dhd_alignctl) { - bus->rxctl += firstread; - pad = ((unsigned long)bus->rxctl % DHD_SDALIGN); - if (pad) - bus->rxctl += (DHD_SDALIGN - pad); - bus->rxctl -= firstread; - } - ASSERT(bus->rxctl >= bus->rxbuf); - - /* Copy the already-read portion over */ - memcpy(bus->rxctl, hdr, firstread); - if (len <= firstread) - goto gotpkt; - - /* Copy the full data pkt in gSPI case and process ioctl. */ - if (bus->bus == SPI_BUS) { - memcpy(bus->rxctl, hdr, len); - goto gotpkt; - } - - /* Raise rdlen to next SDIO block to avoid tail command */ - rdlen = len - firstread; - if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) { - pad = bus->blocksize - (rdlen % bus->blocksize); - if ((pad <= bus->roundup) && (pad < bus->blocksize) && - ((len + pad) < bus->dhd->maxctl)) - rdlen += pad; - } else if (rdlen % DHD_SDALIGN) { - rdlen += DHD_SDALIGN - (rdlen % DHD_SDALIGN); - } - - /* Satisfy length-alignment requirements */ - if (forcealign && (rdlen & (ALIGNMENT - 1))) - rdlen = roundup(rdlen, ALIGNMENT); - - /* Drop if the read is too big or it exceeds our maximum */ - if ((rdlen + firstread) > bus->dhd->maxctl) { - DHD_ERROR(("%s: %d-byte control read exceeds %d-byte buffer\n", - __func__, rdlen, bus->dhd->maxctl)); - bus->dhd->rx_errors++; - dhdsdio_rxfail(bus, false, false); - goto done; - } - - if ((len - doff) > bus->dhd->maxctl) { - DHD_ERROR(("%s: %d-byte ctl frame (%d-byte ctl data) exceeds " - "%d-byte limit\n", - __func__, len, (len - doff), bus->dhd->maxctl)); - bus->dhd->rx_errors++; - bus->rx_toolong++; - dhdsdio_rxfail(bus, false, false); - goto done; - } - - /* Read remainder of frame body into the rxctl buffer */ - sdret = bcmsdh_recv_buf(bus, bcmsdh_cur_sbwad(sdh), SDIO_FUNC_2, - F2SYNC, (bus->rxctl + firstread), rdlen, - NULL, NULL, NULL); - bus->f2rxdata++; - ASSERT(sdret != -BCME_PENDING); - - /* Control frame failures need retransmission */ - if (sdret < 0) { - DHD_ERROR(("%s: read %d control bytes failed: %d\n", - __func__, rdlen, sdret)); - bus->rxc_errors++; /* dhd.rx_ctlerrs is higher level */ - dhdsdio_rxfail(bus, true, true); - goto done; - } - -gotpkt: - -#ifdef DHD_DEBUG - if (DHD_BYTES_ON() && DHD_CTL_ON()) { - printk(KERN_DEBUG "RxCtrl:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, bus->rxctl, len); - } -#endif - - /* Point to valid data and indicate its length */ - bus->rxctl += doff; - bus->rxlen = len - doff; - -done: - /* Awake any waiters */ - dhd_os_ioctl_resp_wake(bus->dhd); -} - -static u8 dhdsdio_rxglom(dhd_bus_t *bus, u8 rxseq) -{ - u16 dlen, totlen; - u8 *dptr, num = 0; - - u16 sublen, check; - struct sk_buff *pfirst, *plast, *pnext, *save_pfirst; - - int errcode; - u8 chan, seq, doff, sfdoff; - u8 txmax; - - int ifidx = 0; - bool usechain = bus->use_rxchain; - - /* If packets, issue read(s) and send up packet chain */ - /* Return sequence numbers consumed? */ - - DHD_TRACE(("dhdsdio_rxglom: start: glomd %p glom %p\n", bus->glomd, - bus->glom)); - - /* If there's a descriptor, generate the packet chain */ - if (bus->glomd) { - dhd_os_sdlock_rxq(bus->dhd); - - pfirst = plast = pnext = NULL; - dlen = (u16) (bus->glomd->len); - dptr = bus->glomd->data; - if (!dlen || (dlen & 1)) { - DHD_ERROR(("%s: bad glomd len(%d), ignore descriptor\n", - __func__, dlen)); - dlen = 0; - } - - for (totlen = num = 0; dlen; num++) { - /* Get (and move past) next length */ - sublen = get_unaligned_le16(dptr); - dlen -= sizeof(u16); - dptr += sizeof(u16); - if ((sublen < SDPCM_HDRLEN) || - ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) { - DHD_ERROR(("%s: descriptor len %d bad: %d\n", - __func__, num, sublen)); - pnext = NULL; - break; - } - if (sublen % DHD_SDALIGN) { - DHD_ERROR(("%s: sublen %d not multiple of %d\n", - __func__, sublen, DHD_SDALIGN)); - usechain = false; - } - totlen += sublen; - - /* For last frame, adjust read len so total - is a block multiple */ - if (!dlen) { - sublen += - (roundup(totlen, bus->blocksize) - totlen); - totlen = roundup(totlen, bus->blocksize); - } - - /* Allocate/chain packet for next subframe */ - pnext = bcm_pkt_buf_get_skb(sublen + DHD_SDALIGN); - if (pnext == NULL) { - DHD_ERROR(("%s: bcm_pkt_buf_get_skb failed, " - "num %d len %d\n", __func__, - num, sublen)); - break; - } - ASSERT(!(pnext->prev)); - if (!pfirst) { - ASSERT(!plast); - pfirst = plast = pnext; - } else { - ASSERT(plast); - plast->next = pnext; - plast = pnext; - } - - /* Adhere to start alignment requirements */ - PKTALIGN(pnext, sublen, DHD_SDALIGN); - } - - /* If all allocations succeeded, save packet chain - in bus structure */ - if (pnext) { - DHD_GLOM(("%s: allocated %d-byte packet chain for %d " - "subframes\n", __func__, totlen, num)); - if (DHD_GLOM_ON() && bus->nextlen) { - if (totlen != bus->nextlen) { - DHD_GLOM(("%s: glomdesc mismatch: nextlen %d glomdesc %d " "rxseq %d\n", - __func__, bus->nextlen, - totlen, rxseq)); - } - } - bus->glom = pfirst; - pfirst = pnext = NULL; - } else { - if (pfirst) - bcm_pkt_buf_free_skb(pfirst); - bus->glom = NULL; - num = 0; - } - - /* Done with descriptor packet */ - bcm_pkt_buf_free_skb(bus->glomd); - bus->glomd = NULL; - bus->nextlen = 0; - - dhd_os_sdunlock_rxq(bus->dhd); - } - - /* Ok -- either we just generated a packet chain, - or had one from before */ - if (bus->glom) { - if (DHD_GLOM_ON()) { - DHD_GLOM(("%s: try superframe read, packet chain:\n", - __func__)); - for (pnext = bus->glom; pnext; pnext = pnext->next) { - DHD_GLOM((" %p: %p len 0x%04x (%d)\n", - pnext, (u8 *) (pnext->data), - pnext->len, pnext->len)); - } - } - - pfirst = bus->glom; - dlen = (u16) bcm_pkttotlen(pfirst); - - /* Do an SDIO read for the superframe. Configurable iovar to - * read directly into the chained packet, or allocate a large - * packet and and copy into the chain. - */ - if (usechain) { - errcode = bcmsdh_recv_buf(bus, - bcmsdh_cur_sbwad(bus->sdh), SDIO_FUNC_2, - F2SYNC, (u8 *) pfirst->data, dlen, - pfirst, NULL, NULL); - } else if (bus->dataptr) { - errcode = bcmsdh_recv_buf(bus, - bcmsdh_cur_sbwad(bus->sdh), SDIO_FUNC_2, - F2SYNC, bus->dataptr, dlen, - NULL, NULL, NULL); - sublen = (u16) bcm_pktfrombuf(pfirst, 0, dlen, - bus->dataptr); - if (sublen != dlen) { - DHD_ERROR(("%s: FAILED TO COPY, dlen %d sublen %d\n", - __func__, dlen, sublen)); - errcode = -1; - } - pnext = NULL; - } else { - DHD_ERROR(("COULDN'T ALLOC %d-BYTE GLOM, FORCE FAILURE\n", - dlen)); - errcode = -1; - } - bus->f2rxdata++; - ASSERT(errcode != -BCME_PENDING); - - /* On failure, kill the superframe, allow a couple retries */ - if (errcode < 0) { - DHD_ERROR(("%s: glom read of %d bytes failed: %d\n", - __func__, dlen, errcode)); - bus->dhd->rx_errors++; - - if (bus->glomerr++ < 3) { - dhdsdio_rxfail(bus, true, true); - } else { - bus->glomerr = 0; - dhdsdio_rxfail(bus, true, false); - dhd_os_sdlock_rxq(bus->dhd); - bcm_pkt_buf_free_skb(bus->glom); - dhd_os_sdunlock_rxq(bus->dhd); - bus->rxglomfail++; - bus->glom = NULL; - } - return 0; - } -#ifdef DHD_DEBUG - if (DHD_GLOM_ON()) { - printk(KERN_DEBUG "SUPERFRAME:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - pfirst->data, min_t(int, pfirst->len, 48)); - } -#endif - - /* Validate the superframe header */ - dptr = (u8 *) (pfirst->data); - sublen = get_unaligned_le16(dptr); - check = get_unaligned_le16(dptr + sizeof(u16)); - - chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]); - seq = SDPCM_PACKET_SEQUENCE(&dptr[SDPCM_FRAMETAG_LEN]); - bus->nextlen = dptr[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET]; - if ((bus->nextlen << 4) > MAX_RX_DATASZ) { - DHD_INFO(("%s: nextlen too large (%d) seq %d\n", - __func__, bus->nextlen, seq)); - bus->nextlen = 0; - } - doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]); - txmax = SDPCM_WINDOW_VALUE(&dptr[SDPCM_FRAMETAG_LEN]); - - errcode = 0; - if ((u16)~(sublen ^ check)) { - DHD_ERROR(("%s (superframe): HW hdr error: len/check " - "0x%04x/0x%04x\n", __func__, sublen, check)); - errcode = -1; - } else if (roundup(sublen, bus->blocksize) != dlen) { - DHD_ERROR(("%s (superframe): len 0x%04x, rounded " - "0x%04x, expect 0x%04x\n", - __func__, sublen, - roundup(sublen, bus->blocksize), dlen)); - errcode = -1; - } else if (SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]) != - SDPCM_GLOM_CHANNEL) { - DHD_ERROR(("%s (superframe): bad channel %d\n", - __func__, - SDPCM_PACKET_CHANNEL(&dptr - [SDPCM_FRAMETAG_LEN]))); - errcode = -1; - } else if (SDPCM_GLOMDESC(&dptr[SDPCM_FRAMETAG_LEN])) { - DHD_ERROR(("%s (superframe): got second descriptor?\n", - __func__)); - errcode = -1; - } else if ((doff < SDPCM_HDRLEN) || - (doff > (pfirst->len - SDPCM_HDRLEN))) { - DHD_ERROR(("%s (superframe): Bad data offset %d: HW %d " - "pkt %d min %d\n", - __func__, doff, sublen, - pfirst->len, SDPCM_HDRLEN)); - errcode = -1; - } - - /* Check sequence number of superframe SW header */ - if (rxseq != seq) { - DHD_INFO(("%s: (superframe) rx_seq %d, expected %d\n", - __func__, seq, rxseq)); - bus->rx_badseq++; - rxseq = seq; - } - - /* Check window for sanity */ - if ((u8) (txmax - bus->tx_seq) > 0x40) { - DHD_ERROR(("%s: unlikely tx max %d with tx_seq %d\n", - __func__, txmax, bus->tx_seq)); - txmax = bus->tx_seq + 2; - } - bus->tx_max = txmax; - - /* Remove superframe header, remember offset */ - skb_pull(pfirst, doff); - sfdoff = doff; - - /* Validate all the subframe headers */ - for (num = 0, pnext = pfirst; pnext && !errcode; - num++, pnext = pnext->next) { - dptr = (u8 *) (pnext->data); - dlen = (u16) (pnext->len); - sublen = get_unaligned_le16(dptr); - check = get_unaligned_le16(dptr + sizeof(u16)); - chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]); - doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]); -#ifdef DHD_DEBUG - if (DHD_GLOM_ON()) { - printk(KERN_DEBUG "subframe:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - dptr, 32); - } -#endif - - if ((u16)~(sublen ^ check)) { - DHD_ERROR(("%s (subframe %d): HW hdr error: " - "len/check 0x%04x/0x%04x\n", - __func__, num, sublen, check)); - errcode = -1; - } else if ((sublen > dlen) || (sublen < SDPCM_HDRLEN)) { - DHD_ERROR(("%s (subframe %d): length mismatch: " - "len 0x%04x, expect 0x%04x\n", - __func__, num, sublen, dlen)); - errcode = -1; - } else if ((chan != SDPCM_DATA_CHANNEL) && - (chan != SDPCM_EVENT_CHANNEL)) { - DHD_ERROR(("%s (subframe %d): bad channel %d\n", - __func__, num, chan)); - errcode = -1; - } else if ((doff < SDPCM_HDRLEN) || (doff > sublen)) { - DHD_ERROR(("%s (subframe %d): Bad data offset %d: HW %d min %d\n", - __func__, num, doff, sublen, - SDPCM_HDRLEN)); - errcode = -1; - } - } - - if (errcode) { - /* Terminate frame on error, request - a couple retries */ - if (bus->glomerr++ < 3) { - /* Restore superframe header space */ - skb_push(pfirst, sfdoff); - dhdsdio_rxfail(bus, true, true); - } else { - bus->glomerr = 0; - dhdsdio_rxfail(bus, true, false); - dhd_os_sdlock_rxq(bus->dhd); - bcm_pkt_buf_free_skb(bus->glom); - dhd_os_sdunlock_rxq(bus->dhd); - bus->rxglomfail++; - bus->glom = NULL; - } - bus->nextlen = 0; - return 0; - } - - /* Basic SD framing looks ok - process each packet (header) */ - save_pfirst = pfirst; - bus->glom = NULL; - plast = NULL; - - dhd_os_sdlock_rxq(bus->dhd); - for (num = 0; pfirst; rxseq++, pfirst = pnext) { - pnext = pfirst->next; - pfirst->next = NULL; - - dptr = (u8 *) (pfirst->data); - sublen = get_unaligned_le16(dptr); - chan = SDPCM_PACKET_CHANNEL(&dptr[SDPCM_FRAMETAG_LEN]); - seq = SDPCM_PACKET_SEQUENCE(&dptr[SDPCM_FRAMETAG_LEN]); - doff = SDPCM_DOFFSET_VALUE(&dptr[SDPCM_FRAMETAG_LEN]); - - DHD_GLOM(("%s: Get subframe %d, %p(%p/%d), sublen %d " - "chan %d seq %d\n", - __func__, num, pfirst, pfirst->data, - pfirst->len, sublen, chan, seq)); - - ASSERT((chan == SDPCM_DATA_CHANNEL) - || (chan == SDPCM_EVENT_CHANNEL)); - - if (rxseq != seq) { - DHD_GLOM(("%s: rx_seq %d, expected %d\n", - __func__, seq, rxseq)); - bus->rx_badseq++; - rxseq = seq; - } -#ifdef DHD_DEBUG - if (DHD_BYTES_ON() && DHD_DATA_ON()) { - printk(KERN_DEBUG "Rx Subframe Data:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - dptr, dlen); - } -#endif - - __skb_trim(pfirst, sublen); - skb_pull(pfirst, doff); - - if (pfirst->len == 0) { - bcm_pkt_buf_free_skb(pfirst); - if (plast) { - plast->next = pnext; - } else { - ASSERT(save_pfirst == pfirst); - save_pfirst = pnext; - } - continue; - } else if (dhd_prot_hdrpull(bus->dhd, &ifidx, pfirst) != - 0) { - DHD_ERROR(("%s: rx protocol error\n", - __func__)); - bus->dhd->rx_errors++; - bcm_pkt_buf_free_skb(pfirst); - if (plast) { - plast->next = pnext; - } else { - ASSERT(save_pfirst == pfirst); - save_pfirst = pnext; - } - continue; - } - - /* this packet will go up, link back into - chain and count it */ - pfirst->next = pnext; - plast = pfirst; - num++; - -#ifdef DHD_DEBUG - if (DHD_GLOM_ON()) { - DHD_GLOM(("%s subframe %d to stack, %p(%p/%d) " - "nxt/lnk %p/%p\n", - __func__, num, pfirst, pfirst->data, - pfirst->len, pfirst->next, - pfirst->prev)); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - pfirst->data, - min_t(int, pfirst->len, 32)); - } -#endif /* DHD_DEBUG */ - } - dhd_os_sdunlock_rxq(bus->dhd); - if (num) { - dhd_os_sdunlock(bus->dhd); - dhd_rx_frame(bus->dhd, ifidx, save_pfirst, num); - dhd_os_sdlock(bus->dhd); - } - - bus->rxglomframes++; - bus->rxglompkts += num; - } - return num; -} - -/* Return true if there may be more frames to read */ -static uint dhdsdio_readframes(dhd_bus_t *bus, uint maxframes, bool *finished) -{ - bcmsdh_info_t *sdh = bus->sdh; - - u16 len, check; /* Extracted hardware header fields */ - u8 chan, seq, doff; /* Extracted software header fields */ - u8 fcbits; /* Extracted fcbits from software header */ - - struct sk_buff *pkt; /* Packet for event or data frames */ - u16 pad; /* Number of pad bytes to read */ - u16 rdlen; /* Total number of bytes to read */ - u8 rxseq; /* Next sequence number to expect */ - uint rxleft = 0; /* Remaining number of frames allowed */ - int sdret; /* Return code from bcmsdh calls */ - u8 txmax; /* Maximum tx sequence offered */ - bool len_consistent; /* Result of comparing readahead len and - len from hw-hdr */ - u8 *rxbuf; - int ifidx = 0; - uint rxcount = 0; /* Total frames read */ - -#if defined(DHD_DEBUG) || defined(SDTEST) - bool sdtest = false; /* To limit message spew from test mode */ -#endif - - DHD_TRACE(("%s: Enter\n", __func__)); - - ASSERT(maxframes); - -#ifdef SDTEST - /* Allow pktgen to override maxframes */ - if (bus->pktgen_count && (bus->pktgen_mode == DHD_PKTGEN_RECV)) { - maxframes = bus->pktgen_count; - sdtest = true; - } -#endif - - /* Not finished unless we encounter no more frames indication */ - *finished = false; - - for (rxseq = bus->rx_seq, rxleft = maxframes; - !bus->rxskip && rxleft && bus->dhd->busstate != DHD_BUS_DOWN; - rxseq++, rxleft--) { - - /* Handle glomming separately */ - if (bus->glom || bus->glomd) { - u8 cnt; - DHD_GLOM(("%s: calling rxglom: glomd %p, glom %p\n", - __func__, bus->glomd, bus->glom)); - cnt = dhdsdio_rxglom(bus, rxseq); - DHD_GLOM(("%s: rxglom returned %d\n", __func__, cnt)); - rxseq += cnt - 1; - rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1; - continue; - } - - /* Try doing single read if we can */ - if (dhd_readahead && bus->nextlen) { - u16 nextlen = bus->nextlen; - bus->nextlen = 0; - - if (bus->bus == SPI_BUS) { - rdlen = len = nextlen; - } else { - rdlen = len = nextlen << 4; - - /* Pad read to blocksize for efficiency */ - if (bus->roundup && bus->blocksize - && (rdlen > bus->blocksize)) { - pad = - bus->blocksize - - (rdlen % bus->blocksize); - if ((pad <= bus->roundup) - && (pad < bus->blocksize) - && ((rdlen + pad + firstread) < - MAX_RX_DATASZ)) - rdlen += pad; - } else if (rdlen % DHD_SDALIGN) { - rdlen += - DHD_SDALIGN - (rdlen % DHD_SDALIGN); - } - } - - /* We use bus->rxctl buffer in WinXP for initial - * control pkt receives. - * Later we use buffer-poll for data as well - * as control packets. - * This is required because dhd receives full - * frame in gSPI unlike SDIO. - * After the frame is received we have to - * distinguish whether it is data - * or non-data frame. - */ - /* Allocate a packet buffer */ - dhd_os_sdlock_rxq(bus->dhd); - pkt = bcm_pkt_buf_get_skb(rdlen + DHD_SDALIGN); - if (!pkt) { - if (bus->bus == SPI_BUS) { - bus->usebufpool = false; - bus->rxctl = bus->rxbuf; - if (dhd_alignctl) { - bus->rxctl += firstread; - pad = ((unsigned long)bus->rxctl % - DHD_SDALIGN); - if (pad) - bus->rxctl += - (DHD_SDALIGN - pad); - bus->rxctl -= firstread; - } - ASSERT(bus->rxctl >= bus->rxbuf); - rxbuf = bus->rxctl; - /* Read the entire frame */ - sdret = bcmsdh_recv_buf(bus, - bcmsdh_cur_sbwad(sdh), - SDIO_FUNC_2, F2SYNC, - rxbuf, rdlen, - NULL, NULL, NULL); - bus->f2rxdata++; - ASSERT(sdret != -BCME_PENDING); - - /* Control frame failures need - retransmission */ - if (sdret < 0) { - DHD_ERROR(("%s: read %d control bytes failed: %d\n", - __func__, - rdlen, sdret)); - /* dhd.rx_ctlerrs is higher */ - bus->rxc_errors++; - dhd_os_sdunlock_rxq(bus->dhd); - dhdsdio_rxfail(bus, true, - (bus->bus == - SPI_BUS) ? false - : true); - continue; - } - } else { - /* Give up on data, - request rtx of events */ - DHD_ERROR(("%s (nextlen): " - "bcm_pkt_buf_get_skb failed:" - " len %d rdlen %d expected" - " rxseq %d\n", __func__, - len, rdlen, rxseq)); - /* Just go try again w/normal - header read */ - dhd_os_sdunlock_rxq(bus->dhd); - continue; - } - } else { - if (bus->bus == SPI_BUS) - bus->usebufpool = true; - - ASSERT(!(pkt->prev)); - PKTALIGN(pkt, rdlen, DHD_SDALIGN); - rxbuf = (u8 *) (pkt->data); - /* Read the entire frame */ - sdret = bcmsdh_recv_buf(bus, - bcmsdh_cur_sbwad(sdh), - SDIO_FUNC_2, F2SYNC, - rxbuf, rdlen, - pkt, NULL, NULL); - bus->f2rxdata++; - ASSERT(sdret != -BCME_PENDING); - - if (sdret < 0) { - DHD_ERROR(("%s (nextlen): read %d bytes failed: %d\n", - __func__, rdlen, sdret)); - bcm_pkt_buf_free_skb(pkt); - bus->dhd->rx_errors++; - dhd_os_sdunlock_rxq(bus->dhd); - /* Force retry w/normal header read. - * Don't attempt NAK for - * gSPI - */ - dhdsdio_rxfail(bus, true, - (bus->bus == - SPI_BUS) ? false : - true); - continue; - } - } - dhd_os_sdunlock_rxq(bus->dhd); - - /* Now check the header */ - memcpy(bus->rxhdr, rxbuf, SDPCM_HDRLEN); - - /* Extract hardware header fields */ - len = get_unaligned_le16(bus->rxhdr); - check = get_unaligned_le16(bus->rxhdr + sizeof(u16)); - - /* All zeros means readahead info was bad */ - if (!(len | check)) { - DHD_INFO(("%s (nextlen): read zeros in HW " - "header???\n", __func__)); - dhdsdio_pktfree2(bus, pkt); - continue; - } - - /* Validate check bytes */ - if ((u16)~(len ^ check)) { - DHD_ERROR(("%s (nextlen): HW hdr error:" - " nextlen/len/check" - " 0x%04x/0x%04x/0x%04x\n", - __func__, nextlen, len, check)); - bus->rx_badhdr++; - dhdsdio_rxfail(bus, false, false); - dhdsdio_pktfree2(bus, pkt); - continue; - } - - /* Validate frame length */ - if (len < SDPCM_HDRLEN) { - DHD_ERROR(("%s (nextlen): HW hdr length " - "invalid: %d\n", __func__, len)); - dhdsdio_pktfree2(bus, pkt); - continue; - } - - /* Check for consistency withreadahead info */ - len_consistent = (nextlen != (roundup(len, 16) >> 4)); - if (len_consistent) { - /* Mismatch, force retry w/normal - header (may be >4K) */ - DHD_ERROR(("%s (nextlen): mismatch, " - "nextlen %d len %d rnd %d; " - "expected rxseq %d\n", - __func__, nextlen, - len, roundup(len, 16), rxseq)); - dhdsdio_rxfail(bus, true, (bus->bus != SPI_BUS)); - dhdsdio_pktfree2(bus, pkt); - continue; - } - - /* Extract software header fields */ - chan = SDPCM_PACKET_CHANNEL( - &bus->rxhdr[SDPCM_FRAMETAG_LEN]); - seq = SDPCM_PACKET_SEQUENCE( - &bus->rxhdr[SDPCM_FRAMETAG_LEN]); - doff = SDPCM_DOFFSET_VALUE( - &bus->rxhdr[SDPCM_FRAMETAG_LEN]); - txmax = SDPCM_WINDOW_VALUE( - &bus->rxhdr[SDPCM_FRAMETAG_LEN]); - - bus->nextlen = - bus->rxhdr[SDPCM_FRAMETAG_LEN + - SDPCM_NEXTLEN_OFFSET]; - if ((bus->nextlen << 4) > MAX_RX_DATASZ) { - DHD_INFO(("%s (nextlen): got frame w/nextlen too large" " (%d), seq %d\n", - __func__, bus->nextlen, seq)); - bus->nextlen = 0; - } - - bus->dhd->rx_readahead_cnt++; - - /* Handle Flow Control */ - fcbits = SDPCM_FCMASK_VALUE( - &bus->rxhdr[SDPCM_FRAMETAG_LEN]); - - if (bus->flowcontrol != fcbits) { - if (~bus->flowcontrol & fcbits) - bus->fc_xoff++; - - if (bus->flowcontrol & ~fcbits) - bus->fc_xon++; - - bus->fc_rcvd++; - bus->flowcontrol = fcbits; - } - - /* Check and update sequence number */ - if (rxseq != seq) { - DHD_INFO(("%s (nextlen): rx_seq %d, expected " - "%d\n", __func__, seq, rxseq)); - bus->rx_badseq++; - rxseq = seq; - } - - /* Check window for sanity */ - if ((u8) (txmax - bus->tx_seq) > 0x40) { - DHD_ERROR(("%s: got unlikely tx max %d with " - "tx_seq %d\n", - __func__, txmax, bus->tx_seq)); - txmax = bus->tx_seq + 2; - } - bus->tx_max = txmax; - -#ifdef DHD_DEBUG - if (DHD_BYTES_ON() && DHD_DATA_ON()) { - printk(KERN_DEBUG "Rx Data:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - rxbuf, len); - } else if (DHD_HDRS_ON()) { - printk(KERN_DEBUG "RxHdr:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - bus->rxhdr, SDPCM_HDRLEN); - } -#endif - - if (chan == SDPCM_CONTROL_CHANNEL) { - if (bus->bus == SPI_BUS) { - dhdsdio_read_control(bus, rxbuf, len, - doff); - } else { - DHD_ERROR(("%s (nextlen): readahead on control" " packet %d?\n", - __func__, seq)); - /* Force retry w/normal header read */ - bus->nextlen = 0; - dhdsdio_rxfail(bus, false, true); - } - dhdsdio_pktfree2(bus, pkt); - continue; - } - - if ((bus->bus == SPI_BUS) && !bus->usebufpool) { - DHD_ERROR(("Received %d bytes on %d channel. Running out of " "rx pktbuf's or not yet malloced.\n", - len, chan)); - continue; - } - - /* Validate data offset */ - if ((doff < SDPCM_HDRLEN) || (doff > len)) { - DHD_ERROR(("%s (nextlen): bad data offset %d: HW len %d min %d\n", - __func__, doff, len, SDPCM_HDRLEN)); - dhdsdio_rxfail(bus, false, false); - dhdsdio_pktfree2(bus, pkt); - continue; - } - - /* All done with this one -- now deliver the packet */ - goto deliver; - } - /* gSPI frames should not be handled in fractions */ - if (bus->bus == SPI_BUS) - break; - - /* Read frame header (hardware and software) */ - sdret = bcmsdh_recv_buf(bus, bcmsdh_cur_sbwad(sdh), - SDIO_FUNC_2, F2SYNC, bus->rxhdr, firstread, - NULL, NULL, NULL); - bus->f2rxhdrs++; - ASSERT(sdret != -BCME_PENDING); - - if (sdret < 0) { - DHD_ERROR(("%s: RXHEADER FAILED: %d\n", __func__, - sdret)); - bus->rx_hdrfail++; - dhdsdio_rxfail(bus, true, true); - continue; - } -#ifdef DHD_DEBUG - if (DHD_BYTES_ON() || DHD_HDRS_ON()) { - printk(KERN_DEBUG "RxHdr:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - bus->rxhdr, SDPCM_HDRLEN); - } -#endif - - /* Extract hardware header fields */ - len = get_unaligned_le16(bus->rxhdr); - check = get_unaligned_le16(bus->rxhdr + sizeof(u16)); - - /* All zeros means no more frames */ - if (!(len | check)) { - *finished = true; - break; - } - - /* Validate check bytes */ - if ((u16) ~(len ^ check)) { - DHD_ERROR(("%s: HW hdr err: len/check 0x%04x/0x%04x\n", - __func__, len, check)); - bus->rx_badhdr++; - dhdsdio_rxfail(bus, false, false); - continue; - } - - /* Validate frame length */ - if (len < SDPCM_HDRLEN) { - DHD_ERROR(("%s: HW hdr length invalid: %d\n", - __func__, len)); - continue; - } - - /* Extract software header fields */ - chan = SDPCM_PACKET_CHANNEL(&bus->rxhdr[SDPCM_FRAMETAG_LEN]); - seq = SDPCM_PACKET_SEQUENCE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]); - doff = SDPCM_DOFFSET_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]); - txmax = SDPCM_WINDOW_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]); - - /* Validate data offset */ - if ((doff < SDPCM_HDRLEN) || (doff > len)) { - DHD_ERROR(("%s: Bad data offset %d: HW len %d, min %d " - "seq %d\n", - __func__, doff, len, SDPCM_HDRLEN, seq)); - bus->rx_badhdr++; - ASSERT(0); - dhdsdio_rxfail(bus, false, false); - continue; - } - - /* Save the readahead length if there is one */ - bus->nextlen = - bus->rxhdr[SDPCM_FRAMETAG_LEN + SDPCM_NEXTLEN_OFFSET]; - if ((bus->nextlen << 4) > MAX_RX_DATASZ) { - DHD_INFO(("%s (nextlen): got frame w/nextlen too large " - "(%d), seq %d\n", - __func__, bus->nextlen, seq)); - bus->nextlen = 0; - } - - /* Handle Flow Control */ - fcbits = SDPCM_FCMASK_VALUE(&bus->rxhdr[SDPCM_FRAMETAG_LEN]); - - if (bus->flowcontrol != fcbits) { - if (~bus->flowcontrol & fcbits) - bus->fc_xoff++; - - if (bus->flowcontrol & ~fcbits) - bus->fc_xon++; - - bus->fc_rcvd++; - bus->flowcontrol = fcbits; - } - - /* Check and update sequence number */ - if (rxseq != seq) { - DHD_INFO(("%s: rx_seq %d, expected %d\n", __func__, - seq, rxseq)); - bus->rx_badseq++; - rxseq = seq; - } - - /* Check window for sanity */ - if ((u8) (txmax - bus->tx_seq) > 0x40) { - DHD_ERROR(("%s: unlikely tx max %d with tx_seq %d\n", - __func__, txmax, bus->tx_seq)); - txmax = bus->tx_seq + 2; - } - bus->tx_max = txmax; - - /* Call a separate function for control frames */ - if (chan == SDPCM_CONTROL_CHANNEL) { - dhdsdio_read_control(bus, bus->rxhdr, len, doff); - continue; - } - - ASSERT((chan == SDPCM_DATA_CHANNEL) - || (chan == SDPCM_EVENT_CHANNEL) - || (chan == SDPCM_TEST_CHANNEL) - || (chan == SDPCM_GLOM_CHANNEL)); - - /* Length to read */ - rdlen = (len > firstread) ? (len - firstread) : 0; - - /* May pad read to blocksize for efficiency */ - if (bus->roundup && bus->blocksize && - (rdlen > bus->blocksize)) { - pad = bus->blocksize - (rdlen % bus->blocksize); - if ((pad <= bus->roundup) && (pad < bus->blocksize) && - ((rdlen + pad + firstread) < MAX_RX_DATASZ)) - rdlen += pad; - } else if (rdlen % DHD_SDALIGN) { - rdlen += DHD_SDALIGN - (rdlen % DHD_SDALIGN); - } - - /* Satisfy length-alignment requirements */ - if (forcealign && (rdlen & (ALIGNMENT - 1))) - rdlen = roundup(rdlen, ALIGNMENT); - - if ((rdlen + firstread) > MAX_RX_DATASZ) { - /* Too long -- skip this frame */ - DHD_ERROR(("%s: too long: len %d rdlen %d\n", - __func__, len, rdlen)); - bus->dhd->rx_errors++; - bus->rx_toolong++; - dhdsdio_rxfail(bus, false, false); - continue; - } - - dhd_os_sdlock_rxq(bus->dhd); - pkt = bcm_pkt_buf_get_skb(rdlen + firstread + DHD_SDALIGN); - if (!pkt) { - /* Give up on data, request rtx of events */ - DHD_ERROR(("%s: bcm_pkt_buf_get_skb failed: rdlen %d " - "chan %d\n", __func__, rdlen, chan)); - bus->dhd->rx_dropped++; - dhd_os_sdunlock_rxq(bus->dhd); - dhdsdio_rxfail(bus, false, RETRYCHAN(chan)); - continue; - } - dhd_os_sdunlock_rxq(bus->dhd); - - ASSERT(!(pkt->prev)); - - /* Leave room for what we already read, and align remainder */ - ASSERT(firstread < pkt->len); - skb_pull(pkt, firstread); - PKTALIGN(pkt, rdlen, DHD_SDALIGN); - - /* Read the remaining frame data */ - sdret = bcmsdh_recv_buf(bus, bcmsdh_cur_sbwad(sdh), SDIO_FUNC_2, - F2SYNC, ((u8 *) (pkt->data)), rdlen, - pkt, NULL, NULL); - bus->f2rxdata++; - ASSERT(sdret != -BCME_PENDING); - - if (sdret < 0) { - DHD_ERROR(("%s: read %d %s bytes failed: %d\n", - __func__, rdlen, - ((chan == - SDPCM_EVENT_CHANNEL) ? "event" : ((chan == - SDPCM_DATA_CHANNEL) - ? "data" : "test")), - sdret)); - dhd_os_sdlock_rxq(bus->dhd); - bcm_pkt_buf_free_skb(pkt); - dhd_os_sdunlock_rxq(bus->dhd); - bus->dhd->rx_errors++; - dhdsdio_rxfail(bus, true, RETRYCHAN(chan)); - continue; - } - - /* Copy the already-read portion */ - skb_push(pkt, firstread); - memcpy(pkt->data, bus->rxhdr, firstread); - -#ifdef DHD_DEBUG - if (DHD_BYTES_ON() && DHD_DATA_ON()) { - printk(KERN_DEBUG "Rx Data:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, - pkt->data, len); - } -#endif - -deliver: - /* Save superframe descriptor and allocate packet frame */ - if (chan == SDPCM_GLOM_CHANNEL) { - if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_FRAMETAG_LEN])) { - DHD_GLOM(("%s: glom descriptor, %d bytes:\n", - __func__, len)); -#ifdef DHD_DEBUG - if (DHD_GLOM_ON()) { - printk(KERN_DEBUG "Glom Data:\n"); - print_hex_dump_bytes("", - DUMP_PREFIX_OFFSET, - pkt->data, len); - } -#endif - __skb_trim(pkt, len); - ASSERT(doff == SDPCM_HDRLEN); - skb_pull(pkt, SDPCM_HDRLEN); - bus->glomd = pkt; - } else { - DHD_ERROR(("%s: glom superframe w/o " - "descriptor!\n", __func__)); - dhdsdio_rxfail(bus, false, false); - } - continue; - } - - /* Fill in packet len and prio, deliver upward */ - __skb_trim(pkt, len); - skb_pull(pkt, doff); - -#ifdef SDTEST - /* Test channel packets are processed separately */ - if (chan == SDPCM_TEST_CHANNEL) { - dhdsdio_testrcv(bus, pkt, seq); - continue; - } -#endif /* SDTEST */ - - if (pkt->len == 0) { - dhd_os_sdlock_rxq(bus->dhd); - bcm_pkt_buf_free_skb(pkt); - dhd_os_sdunlock_rxq(bus->dhd); - continue; - } else if (dhd_prot_hdrpull(bus->dhd, &ifidx, pkt) != 0) { - DHD_ERROR(("%s: rx protocol error\n", __func__)); - dhd_os_sdlock_rxq(bus->dhd); - bcm_pkt_buf_free_skb(pkt); - dhd_os_sdunlock_rxq(bus->dhd); - bus->dhd->rx_errors++; - continue; - } - - /* Unlock during rx call */ - dhd_os_sdunlock(bus->dhd); - dhd_rx_frame(bus->dhd, ifidx, pkt, 1); - dhd_os_sdlock(bus->dhd); - } - rxcount = maxframes - rxleft; -#ifdef DHD_DEBUG - /* Message if we hit the limit */ - if (!rxleft && !sdtest) - DHD_DATA(("%s: hit rx limit of %d frames\n", __func__, - maxframes)); - else -#endif /* DHD_DEBUG */ - DHD_DATA(("%s: processed %d frames\n", __func__, rxcount)); - /* Back off rxseq if awaiting rtx, update rx_seq */ - if (bus->rxskip) - rxseq--; - bus->rx_seq = rxseq; - - return rxcount; -} - -static u32 dhdsdio_hostmail(dhd_bus_t *bus) -{ - sdpcmd_regs_t *regs = bus->regs; - u32 intstatus = 0; - u32 hmb_data; - u8 fcbits; - uint retries = 0; - - DHD_TRACE(("%s: Enter\n", __func__)); - - /* Read mailbox data and ack that we did so */ - R_SDREG(hmb_data, ®s->tohostmailboxdata, retries); - if (retries <= retry_limit) - W_SDREG(SMB_INT_ACK, ®s->tosbmailbox, retries); - bus->f1regdata += 2; - - /* Dongle recomposed rx frames, accept them again */ - if (hmb_data & HMB_DATA_NAKHANDLED) { - DHD_INFO(("Dongle reports NAK handled, expect rtx of %d\n", - bus->rx_seq)); - if (!bus->rxskip) - DHD_ERROR(("%s: unexpected NAKHANDLED!\n", __func__)); - - bus->rxskip = false; - intstatus |= I_HMB_FRAME_IND; - } - - /* - * DEVREADY does not occur with gSPI. - */ - if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { - bus->sdpcm_ver = - (hmb_data & HMB_DATA_VERSION_MASK) >> - HMB_DATA_VERSION_SHIFT; - if (bus->sdpcm_ver != SDPCM_PROT_VERSION) - DHD_ERROR(("Version mismatch, dongle reports %d, " - "expecting %d\n", - bus->sdpcm_ver, SDPCM_PROT_VERSION)); - else - DHD_INFO(("Dongle ready, protocol version %d\n", - bus->sdpcm_ver)); - } - - /* - * Flow Control has been moved into the RX headers and this out of band - * method isn't used any more. - * remaining backward compatible with older dongles. - */ - if (hmb_data & HMB_DATA_FC) { - fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> - HMB_DATA_FCDATA_SHIFT; - - if (fcbits & ~bus->flowcontrol) - bus->fc_xoff++; - - if (bus->flowcontrol & ~fcbits) - bus->fc_xon++; - - bus->fc_rcvd++; - bus->flowcontrol = fcbits; - } - - /* Shouldn't be any others */ - if (hmb_data & ~(HMB_DATA_DEVREADY | - HMB_DATA_NAKHANDLED | - HMB_DATA_FC | - HMB_DATA_FWREADY | - HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) { - DHD_ERROR(("Unknown mailbox data content: 0x%02x\n", hmb_data)); - } - - return intstatus; -} - -bool dhdsdio_dpc(dhd_bus_t *bus) -{ - bcmsdh_info_t *sdh = bus->sdh; - sdpcmd_regs_t *regs = bus->regs; - u32 intstatus, newstatus = 0; - uint retries = 0; - uint rxlimit = dhd_rxbound; /* Rx frames to read before resched */ - uint txlimit = dhd_txbound; /* Tx frames to send before resched */ - uint framecnt = 0; /* Temporary counter of tx/rx frames */ - bool rxdone = true; /* Flag for no more read data */ - bool resched = false; /* Flag indicating resched wanted */ - - DHD_TRACE(("%s: Enter\n", __func__)); - - /* Start with leftover status bits */ - intstatus = bus->intstatus; - - dhd_os_sdlock(bus->dhd); - - /* If waiting for HTAVAIL, check status */ - if (bus->clkstate == CLK_PENDING) { - int err; - u8 clkctl, devctl = 0; - -#ifdef DHD_DEBUG - /* Check for inconsistent device control */ - devctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, &err); - if (err) { - DHD_ERROR(("%s: error reading DEVCTL: %d\n", - __func__, err)); - bus->dhd->busstate = DHD_BUS_DOWN; - } else { - ASSERT(devctl & SBSDIO_DEVCTL_CA_INT_ONLY); - } -#endif /* DHD_DEBUG */ - - /* Read CSR, if clock on switch to AVAIL, else ignore */ - clkctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - &err); - if (err) { - DHD_ERROR(("%s: error reading CSR: %d\n", __func__, - err)); - bus->dhd->busstate = DHD_BUS_DOWN; - } - - DHD_INFO(("DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n", devctl, - clkctl)); - - if (SBSDIO_HTAV(clkctl)) { - devctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - &err); - if (err) { - DHD_ERROR(("%s: error reading DEVCTL: %d\n", - __func__, err)); - bus->dhd->busstate = DHD_BUS_DOWN; - } - devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_DEVICE_CTL, - devctl, &err); - if (err) { - DHD_ERROR(("%s: error writing DEVCTL: %d\n", - __func__, err)); - bus->dhd->busstate = DHD_BUS_DOWN; - } - bus->clkstate = CLK_AVAIL; - } else { - goto clkwait; - } - } - - BUS_WAKE(bus); - - /* Make sure backplane clock is on */ - dhdsdio_clkctl(bus, CLK_AVAIL, true); - if (bus->clkstate == CLK_PENDING) - goto clkwait; - - /* Pending interrupt indicates new device status */ - if (bus->ipend) { - bus->ipend = false; - R_SDREG(newstatus, ®s->intstatus, retries); - bus->f1regdata++; - if (bcmsdh_regfail(bus->sdh)) - newstatus = 0; - newstatus &= bus->hostintmask; - bus->fcstate = !!(newstatus & I_HMB_FC_STATE); - if (newstatus) { - W_SDREG(newstatus, ®s->intstatus, retries); - bus->f1regdata++; - } - } - - /* Merge new bits with previous */ - intstatus |= newstatus; - bus->intstatus = 0; - - /* Handle flow-control change: read new state in case our ack - * crossed another change interrupt. If change still set, assume - * FC ON for safety, let next loop through do the debounce. - */ - if (intstatus & I_HMB_FC_CHANGE) { - intstatus &= ~I_HMB_FC_CHANGE; - W_SDREG(I_HMB_FC_CHANGE, ®s->intstatus, retries); - R_SDREG(newstatus, ®s->intstatus, retries); - bus->f1regdata += 2; - bus->fcstate = - !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE)); - intstatus |= (newstatus & bus->hostintmask); - } - - /* Handle host mailbox indication */ - if (intstatus & I_HMB_HOST_INT) { - intstatus &= ~I_HMB_HOST_INT; - intstatus |= dhdsdio_hostmail(bus); - } - - /* Generally don't ask for these, can get CRC errors... */ - if (intstatus & I_WR_OOSYNC) { - DHD_ERROR(("Dongle reports WR_OOSYNC\n")); - intstatus &= ~I_WR_OOSYNC; - } - - if (intstatus & I_RD_OOSYNC) { - DHD_ERROR(("Dongle reports RD_OOSYNC\n")); - intstatus &= ~I_RD_OOSYNC; - } - - if (intstatus & I_SBINT) { - DHD_ERROR(("Dongle reports SBINT\n")); - intstatus &= ~I_SBINT; - } - - /* Would be active due to wake-wlan in gSPI */ - if (intstatus & I_CHIPACTIVE) { - DHD_INFO(("Dongle reports CHIPACTIVE\n")); - intstatus &= ~I_CHIPACTIVE; - } - - /* Ignore frame indications if rxskip is set */ - if (bus->rxskip) - intstatus &= ~I_HMB_FRAME_IND; - - /* On frame indication, read available frames */ - if (PKT_AVAILABLE()) { - framecnt = dhdsdio_readframes(bus, rxlimit, &rxdone); - if (rxdone || bus->rxskip) - intstatus &= ~I_HMB_FRAME_IND; - rxlimit -= min(framecnt, rxlimit); - } - - /* Keep still-pending events for next scheduling */ - bus->intstatus = intstatus; - -clkwait: -#if defined(OOB_INTR_ONLY) - bcmsdh_oob_intr_set(1); -#endif /* (OOB_INTR_ONLY) */ - /* Re-enable interrupts to detect new device events (mailbox, rx frame) - * or clock availability. (Allows tx loop to check ipend if desired.) - * (Unless register access seems hosed, as we may not be able to ACK...) - */ - if (bus->intr && bus->intdis && !bcmsdh_regfail(sdh)) { - DHD_INTR(("%s: enable SDIO interrupts, rxdone %d framecnt %d\n", - __func__, rxdone, framecnt)); - bus->intdis = false; - bcmsdh_intr_enable(sdh); - } - - if (DATAOK(bus) && bus->ctrl_frame_stat && - (bus->clkstate == CLK_AVAIL)) { - int ret, i; - - ret = - dhd_bcmsdh_send_buf(bus, bcmsdh_cur_sbwad(sdh), SDIO_FUNC_2, - F2SYNC, (u8 *) bus->ctrl_frame_buf, - (u32) bus->ctrl_frame_len, NULL, - NULL, NULL); - ASSERT(ret != -BCME_PENDING); - - if (ret < 0) { - /* On failure, abort the command and - terminate the frame */ - DHD_INFO(("%s: sdio error %d, abort command and " - "terminate frame.\n", __func__, ret)); - bus->tx_sderrs++; - - bcmsdh_abort(sdh, SDIO_FUNC_2); - - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, - NULL); - bus->f1regdata++; - - for (i = 0; i < 3; i++) { - u8 hi, lo; - hi = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCHI, - NULL); - lo = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_WFRAMEBCLO, - NULL); - bus->f1regdata += 2; - if ((hi == 0) && (lo == 0)) - break; - } - - } - if (ret == 0) - bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP; - - DHD_INFO(("Return_dpc value is : %d\n", ret)); - bus->ctrl_frame_stat = false; - dhd_wait_event_wakeup(bus->dhd); - } - /* Send queued frames (limit 1 if rx may still be pending) */ - else if ((bus->clkstate == CLK_AVAIL) && !bus->fcstate && - bcm_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit - && DATAOK(bus)) { - framecnt = rxdone ? txlimit : min(txlimit, dhd_txminmax); - framecnt = dhdsdio_sendfromq(bus, framecnt); - txlimit -= framecnt; - } - - /* Resched if events or tx frames are pending, - else await next interrupt */ - /* On failed register access, all bets are off: - no resched or interrupts */ - if ((bus->dhd->busstate == DHD_BUS_DOWN) || bcmsdh_regfail(sdh)) { - DHD_ERROR(("%s: failed backplane access over SDIO, halting " - "operation %d\n", __func__, bcmsdh_regfail(sdh))); - bus->dhd->busstate = DHD_BUS_DOWN; - bus->intstatus = 0; - } else if (bus->clkstate == CLK_PENDING) { - DHD_INFO(("%s: rescheduled due to CLK_PENDING awaiting " - "I_CHIPACTIVE interrupt\n", __func__)); - resched = true; - } else if (bus->intstatus || bus->ipend || - (!bus->fcstate && bcm_pktq_mlen(&bus->txq, ~bus->flowcontrol) && - DATAOK(bus)) || PKT_AVAILABLE()) { - resched = true; - } - - bus->dpc_sched = resched; - - /* If we're done for now, turn off clock request. */ - if ((bus->clkstate != CLK_PENDING) - && bus->idletime == DHD_IDLE_IMMEDIATE) { - bus->activity = false; - dhdsdio_clkctl(bus, CLK_NONE, false); - } - - dhd_os_sdunlock(bus->dhd); - - return resched; -} - -bool dhd_bus_dpc(struct dhd_bus *bus) -{ - bool resched; - - /* Call the DPC directly. */ - DHD_TRACE(("Calling dhdsdio_dpc() from %s\n", __func__)); - resched = dhdsdio_dpc(bus); - - return resched; -} - -void dhdsdio_isr(void *arg) -{ - dhd_bus_t *bus = (dhd_bus_t *) arg; - bcmsdh_info_t *sdh; - - DHD_TRACE(("%s: Enter\n", __func__)); - - if (!bus) { - DHD_ERROR(("%s : bus is null pointer , exit\n", __func__)); - return; - } - sdh = bus->sdh; - - if (bus->dhd->busstate == DHD_BUS_DOWN) { - DHD_ERROR(("%s : bus is down. we have nothing to do\n", - __func__)); - return; - } - /* Count the interrupt call */ - bus->intrcount++; - bus->ipend = true; - - /* Shouldn't get this interrupt if we're sleeping? */ - if (bus->sleeping) { - DHD_ERROR(("INTERRUPT WHILE SLEEPING??\n")); - return; - } - - /* Disable additional interrupts (is this needed now)? */ - if (bus->intr) - DHD_INTR(("%s: disable SDIO interrupts\n", __func__)); - else - DHD_ERROR(("dhdsdio_isr() w/o interrupt configured!\n")); - - bcmsdh_intr_disable(sdh); - bus->intdis = true; - -#if defined(SDIO_ISR_THREAD) - DHD_TRACE(("Calling dhdsdio_dpc() from %s\n", __func__)); - while (dhdsdio_dpc(bus)) - ; -#else - bus->dpc_sched = true; - dhd_sched_dpc(bus->dhd); -#endif - -} - -#ifdef SDTEST -static void dhdsdio_pktgen_init(dhd_bus_t *bus) -{ - /* Default to specified length, or full range */ - if (dhd_pktgen_len) { - bus->pktgen_maxlen = min(dhd_pktgen_len, MAX_PKTGEN_LEN); - bus->pktgen_minlen = bus->pktgen_maxlen; - } else { - bus->pktgen_maxlen = MAX_PKTGEN_LEN; - bus->pktgen_minlen = 0; - } - bus->pktgen_len = (u16) bus->pktgen_minlen; - - /* Default to per-watchdog burst with 10s print time */ - bus->pktgen_freq = 1; - bus->pktgen_print = 10000 / dhd_watchdog_ms; - bus->pktgen_count = (dhd_pktgen * dhd_watchdog_ms + 999) / 1000; - - /* Default to echo mode */ - bus->pktgen_mode = DHD_PKTGEN_ECHO; - bus->pktgen_stop = 1; -} - -static void dhdsdio_pktgen(dhd_bus_t *bus) -{ - struct sk_buff *pkt; - u8 *data; - uint pktcount; - uint fillbyte; - u16 len; - - /* Display current count if appropriate */ - if (bus->pktgen_print && (++bus->pktgen_ptick >= bus->pktgen_print)) { - bus->pktgen_ptick = 0; - printk(KERN_DEBUG "%s: send attempts %d rcvd %d\n", - __func__, bus->pktgen_sent, bus->pktgen_rcvd); - } - - /* For recv mode, just make sure dongle has started sending */ - if (bus->pktgen_mode == DHD_PKTGEN_RECV) { - if (!bus->pktgen_rcvd) - dhdsdio_sdtest_set(bus, true); - return; - } - - /* Otherwise, generate or request the specified number of packets */ - for (pktcount = 0; pktcount < bus->pktgen_count; pktcount++) { - /* Stop if total has been reached */ - if (bus->pktgen_total - && (bus->pktgen_sent >= bus->pktgen_total)) { - bus->pktgen_count = 0; - break; - } - - /* Allocate an appropriate-sized packet */ - len = bus->pktgen_len; - pkt = bcm_pkt_buf_get_skb( - (len + SDPCM_HDRLEN + SDPCM_TEST_HDRLEN + DHD_SDALIGN), - true); - if (!pkt) { - DHD_ERROR(("%s: bcm_pkt_buf_get_skb failed!\n", - __func__)); - break; - } - PKTALIGN(pkt, (len + SDPCM_HDRLEN + SDPCM_TEST_HDRLEN), - DHD_SDALIGN); - data = (u8 *) (pkt->data) + SDPCM_HDRLEN; - - /* Write test header cmd and extra based on mode */ - switch (bus->pktgen_mode) { - case DHD_PKTGEN_ECHO: - *data++ = SDPCM_TEST_ECHOREQ; - *data++ = (u8) bus->pktgen_sent; - break; - - case DHD_PKTGEN_SEND: - *data++ = SDPCM_TEST_DISCARD; - *data++ = (u8) bus->pktgen_sent; - break; - - case DHD_PKTGEN_RXBURST: - *data++ = SDPCM_TEST_BURST; - *data++ = (u8) bus->pktgen_count; - break; - - default: - DHD_ERROR(("Unrecognized pktgen mode %d\n", - bus->pktgen_mode)); - bcm_pkt_buf_free_skb(pkt, true); - bus->pktgen_count = 0; - return; - } - - /* Write test header length field */ - *data++ = (len >> 0); - *data++ = (len >> 8); - - /* Then fill in the remainder -- N/A for burst, - but who cares... */ - for (fillbyte = 0; fillbyte < len; fillbyte++) - *data++ = - SDPCM_TEST_FILL(fillbyte, (u8) bus->pktgen_sent); - -#ifdef DHD_DEBUG - if (DHD_BYTES_ON() && DHD_DATA_ON()) { - data = (u8 *) (pkt->data) + SDPCM_HDRLEN; - printk(KERN_DEBUG "dhdsdio_pktgen: Tx Data:\n"); - print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, data, - pkt->len - SDPCM_HDRLEN); - } -#endif - - /* Send it */ - if (dhdsdio_txpkt(bus, pkt, SDPCM_TEST_CHANNEL, true)) { - bus->pktgen_fail++; - if (bus->pktgen_stop - && bus->pktgen_stop == bus->pktgen_fail) - bus->pktgen_count = 0; - } - bus->pktgen_sent++; - - /* Bump length if not fixed, wrap at max */ - if (++bus->pktgen_len > bus->pktgen_maxlen) - bus->pktgen_len = (u16) bus->pktgen_minlen; - - /* Special case for burst mode: just send one request! */ - if (bus->pktgen_mode == DHD_PKTGEN_RXBURST) - break; - } -} - -static void dhdsdio_sdtest_set(dhd_bus_t *bus, bool start) -{ - struct sk_buff *pkt; - u8 *data; - - /* Allocate the packet */ - pkt = bcm_pkt_buf_get_skb(SDPCM_HDRLEN + SDPCM_TEST_HDRLEN + - DHD_SDALIGN, true); - if (!pkt) { - DHD_ERROR(("%s: bcm_pkt_buf_get_skb failed!\n", __func__)); - return; - } - PKTALIGN(pkt, (SDPCM_HDRLEN + SDPCM_TEST_HDRLEN), DHD_SDALIGN); - data = (u8 *) (pkt->data) + SDPCM_HDRLEN; - - /* Fill in the test header */ - *data++ = SDPCM_TEST_SEND; - *data++ = start; - *data++ = (bus->pktgen_maxlen >> 0); - *data++ = (bus->pktgen_maxlen >> 8); - - /* Send it */ - if (dhdsdio_txpkt(bus, pkt, SDPCM_TEST_CHANNEL, true)) - bus->pktgen_fail++; -} - -static void dhdsdio_testrcv(dhd_bus_t *bus, struct sk_buff *pkt, uint seq) -{ - u8 *data; - uint pktlen; - - u8 cmd; - u8 extra; - u16 len; - u16 offset; - - /* Check for min length */ - pktlen = pkt->len; - if (pktlen < SDPCM_TEST_HDRLEN) { - DHD_ERROR(("dhdsdio_restrcv: toss runt frame, pktlen %d\n", - pktlen)); - bcm_pkt_buf_free_skb(pkt, false); - return; - } - - /* Extract header fields */ - data = pkt->data; - cmd = *data++; - extra = *data++; - len = *data++; - len += *data++ << 8; - - /* Check length for relevant commands */ - if (cmd == SDPCM_TEST_DISCARD || cmd == SDPCM_TEST_ECHOREQ - || cmd == SDPCM_TEST_ECHORSP) { - if (pktlen != len + SDPCM_TEST_HDRLEN) { - DHD_ERROR(("dhdsdio_testrcv: frame length mismatch, " - "pktlen %d seq %d" " cmd %d extra %d len %d\n", - pktlen, seq, cmd, extra, len)); - bcm_pkt_buf_free_skb(pkt, false); - return; - } - } - - /* Process as per command */ - switch (cmd) { - case SDPCM_TEST_ECHOREQ: - /* Rx->Tx turnaround ok (even on NDIS w/current - implementation) */ - *(u8 *) (pkt->data) = SDPCM_TEST_ECHORSP; - if (dhdsdio_txpkt(bus, pkt, SDPCM_TEST_CHANNEL, true) == 0) { - bus->pktgen_sent++; - } else { - bus->pktgen_fail++; - bcm_pkt_buf_free_skb(pkt, false); - } - bus->pktgen_rcvd++; - break; - - case SDPCM_TEST_ECHORSP: - if (bus->ext_loop) { - bcm_pkt_buf_free_skb(pkt, false); - bus->pktgen_rcvd++; - break; - } - - for (offset = 0; offset < len; offset++, data++) { - if (*data != SDPCM_TEST_FILL(offset, extra)) { - DHD_ERROR(("dhdsdio_testrcv: echo data mismatch: " "offset %d (len %d) expect 0x%02x rcvd 0x%02x\n", - offset, len, - SDPCM_TEST_FILL(offset, extra), *data)); - break; - } - } - bcm_pkt_buf_free_skb(pkt, false); - bus->pktgen_rcvd++; - break; - - case SDPCM_TEST_DISCARD: - bcm_pkt_buf_free_skb(pkt, false); - bus->pktgen_rcvd++; - break; - - case SDPCM_TEST_BURST: - case SDPCM_TEST_SEND: - default: - DHD_INFO(("dhdsdio_testrcv: unsupported or unknown command, " - "pktlen %d seq %d" " cmd %d extra %d len %d\n", - pktlen, seq, cmd, extra, len)); - bcm_pkt_buf_free_skb(pkt, false); - break; - } - - /* For recv mode, stop at limie (and tell dongle to stop sending) */ - if (bus->pktgen_mode == DHD_PKTGEN_RECV) { - if (bus->pktgen_total - && (bus->pktgen_rcvd >= bus->pktgen_total)) { - bus->pktgen_count = 0; - dhdsdio_sdtest_set(bus, false); - } - } -} -#endif /* SDTEST */ - -extern bool dhd_bus_watchdog(dhd_pub_t *dhdp) -{ - dhd_bus_t *bus; - - DHD_TIMER(("%s: Enter\n", __func__)); - - bus = dhdp->bus; - - if (bus->dhd->dongle_reset) - return false; - - /* Ignore the timer if simulating bus down */ - if (bus->sleeping) - return false; - - dhd_os_sdlock(bus->dhd); - - /* Poll period: check device if appropriate. */ - if (bus->poll && (++bus->polltick >= bus->pollrate)) { - u32 intstatus = 0; - - /* Reset poll tick */ - bus->polltick = 0; - - /* Check device if no interrupts */ - if (!bus->intr || (bus->intrcount == bus->lastintrs)) { - - if (!bus->dpc_sched) { - u8 devpend; - devpend = bcmsdh_cfg_read(bus->sdh, SDIO_FUNC_0, - SDIOD_CCCR_INTPEND, - NULL); - intstatus = - devpend & (INTR_STATUS_FUNC1 | - INTR_STATUS_FUNC2); - } - - /* If there is something, make like the ISR and - schedule the DPC */ - if (intstatus) { - bus->pollcnt++; - bus->ipend = true; - if (bus->intr) - bcmsdh_intr_disable(bus->sdh); - - bus->dpc_sched = true; - dhd_sched_dpc(bus->dhd); - - } - } - - /* Update interrupt tracking */ - bus->lastintrs = bus->intrcount; - } -#ifdef DHD_DEBUG - /* Poll for console output periodically */ - if (dhdp->busstate == DHD_BUS_DATA && dhd_console_ms != 0) { - bus->console.count += dhd_watchdog_ms; - if (bus->console.count >= dhd_console_ms) { - bus->console.count -= dhd_console_ms; - /* Make sure backplane clock is on */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - if (dhdsdio_readconsole(bus) < 0) - dhd_console_ms = 0; /* On error, - stop trying */ - } - } -#endif /* DHD_DEBUG */ - -#ifdef SDTEST - /* Generate packets if configured */ - if (bus->pktgen_count && (++bus->pktgen_tick >= bus->pktgen_freq)) { - /* Make sure backplane clock is on */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - bus->pktgen_tick = 0; - dhdsdio_pktgen(bus); - } -#endif - - /* On idle timeout clear activity flag and/or turn off clock */ - if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) { - if (++bus->idlecount >= bus->idletime) { - bus->idlecount = 0; - if (bus->activity) { - bus->activity = false; - dhd_os_wd_timer(bus->dhd, dhd_watchdog_ms); - } else { - dhdsdio_clkctl(bus, CLK_NONE, false); - } - } - } - - dhd_os_sdunlock(bus->dhd); - - return bus->ipend; -} - -#ifdef DHD_DEBUG -extern int dhd_bus_console_in(dhd_pub_t *dhdp, unsigned char *msg, uint msglen) -{ - dhd_bus_t *bus = dhdp->bus; - u32 addr, val; - int rv; - struct sk_buff *pkt; - - /* Address could be zero if CONSOLE := 0 in dongle Makefile */ - if (bus->console_addr == 0) - return -ENOTSUPP; - - /* Exclusive bus access */ - dhd_os_sdlock(bus->dhd); - - /* Don't allow input if dongle is in reset */ - if (bus->dhd->dongle_reset) { - dhd_os_sdunlock(bus->dhd); - return -EPERM; - } - - /* Request clock to allow SDIO accesses */ - BUS_WAKE(bus); - /* No pend allowed since txpkt is called later, ht clk has to be on */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - - /* Zero cbuf_index */ - addr = bus->console_addr + offsetof(hndrte_cons_t, cbuf_idx); - val = cpu_to_le32(0); - rv = dhdsdio_membytes(bus, true, addr, (u8 *)&val, sizeof(val)); - if (rv < 0) - goto done; - - /* Write message into cbuf */ - addr = bus->console_addr + offsetof(hndrte_cons_t, cbuf); - rv = dhdsdio_membytes(bus, true, addr, (u8 *)msg, msglen); - if (rv < 0) - goto done; - - /* Write length into vcons_in */ - addr = bus->console_addr + offsetof(hndrte_cons_t, vcons_in); - val = cpu_to_le32(msglen); - rv = dhdsdio_membytes(bus, true, addr, (u8 *)&val, sizeof(val)); - if (rv < 0) - goto done; - - /* Bump dongle by sending an empty event pkt. - * sdpcm_sendup (RX) checks for virtual console input. - */ - pkt = bcm_pkt_buf_get_skb(4 + SDPCM_RESERVE); - if ((pkt != NULL) && bus->clkstate == CLK_AVAIL) - dhdsdio_txpkt(bus, pkt, SDPCM_EVENT_CHANNEL, true); - -done: - if ((bus->idletime == DHD_IDLE_IMMEDIATE) && !bus->dpc_sched) { - bus->activity = false; - dhdsdio_clkctl(bus, CLK_NONE, true); - } - - dhd_os_sdunlock(bus->dhd); - - return rv; -} -#endif /* DHD_DEBUG */ - -#ifdef DHD_DEBUG -static void dhd_dump_cis(uint fn, u8 *cis) -{ - uint byte, tag, tdata; - DHD_INFO(("Function %d CIS:\n", fn)); - - for (tdata = byte = 0; byte < SBSDIO_CIS_SIZE_LIMIT; byte++) { - if ((byte % 16) == 0) - DHD_INFO((" ")); - DHD_INFO(("%02x ", cis[byte])); - if ((byte % 16) == 15) - DHD_INFO(("\n")); - if (!tdata--) { - tag = cis[byte]; - if (tag == 0xff) - break; - else if (!tag) - tdata = 0; - else if ((byte + 1) < SBSDIO_CIS_SIZE_LIMIT) - tdata = cis[byte + 1] + 1; - else - DHD_INFO(("]")); - } - } - if ((byte % 16) != 15) - DHD_INFO(("\n")); -} -#endif /* DHD_DEBUG */ - -static bool dhdsdio_chipmatch(u16 chipid) -{ - if (chipid == BCM4325_CHIP_ID) - return true; - if (chipid == BCM4329_CHIP_ID) - return true; - if (chipid == BCM4319_CHIP_ID) - return true; - return false; -} - -static void *dhdsdio_probe(u16 venid, u16 devid, u16 bus_no, - u16 slot, u16 func, uint bustype, void *regsva, - void *sdh) -{ - int ret; - dhd_bus_t *bus; - - /* Init global variables at run-time, not as part of the declaration. - * This is required to support init/de-init of the driver. - * Initialization - * of globals as part of the declaration results in non-deterministic - * behavior since the value of the globals may be different on the - * first time that the driver is initialized vs subsequent - * initializations. - */ - dhd_txbound = DHD_TXBOUND; - dhd_rxbound = DHD_RXBOUND; - dhd_alignctl = true; - sd1idle = true; - dhd_readahead = true; - retrydata = false; - dhd_dongle_memsize = 0; - dhd_txminmax = DHD_TXMINMAX; - - forcealign = true; - - dhd_common_init(); - - DHD_TRACE(("%s: Enter\n", __func__)); - DHD_INFO(("%s: venid 0x%04x devid 0x%04x\n", __func__, venid, devid)); - - /* We make assumptions about address window mappings */ - ASSERT((unsigned long)regsva == SI_ENUM_BASE); - - /* BCMSDH passes venid and devid based on CIS parsing -- but - * low-power start - * means early parse could fail, so here we should get either an ID - * we recognize OR (-1) indicating we must request power first. - */ - /* Check the Vendor ID */ - switch (venid) { - case 0x0000: - case PCI_VENDOR_ID_BROADCOM: - break; - default: - DHD_ERROR(("%s: unknown vendor: 0x%04x\n", __func__, venid)); - return NULL; - } - - /* Check the Device ID and make sure it's one that we support */ - switch (devid) { - case BCM4325_D11DUAL_ID: /* 4325 802.11a/g id */ - case BCM4325_D11G_ID: /* 4325 802.11g 2.4Ghz band id */ - case BCM4325_D11A_ID: /* 4325 802.11a 5Ghz band id */ - DHD_INFO(("%s: found 4325 Dongle\n", __func__)); - break; - case BCM4329_D11NDUAL_ID: /* 4329 802.11n dualband device */ - case BCM4329_D11N2G_ID: /* 4329 802.11n 2.4G device */ - case BCM4329_D11N5G_ID: /* 4329 802.11n 5G device */ - case 0x4329: - DHD_INFO(("%s: found 4329 Dongle\n", __func__)); - break; - case BCM4319_D11N_ID: /* 4319 802.11n id */ - case BCM4319_D11N2G_ID: /* 4319 802.11n2g id */ - case BCM4319_D11N5G_ID: /* 4319 802.11n5g id */ - DHD_INFO(("%s: found 4319 Dongle\n", __func__)); - break; - case 0: - DHD_INFO(("%s: allow device id 0, will check chip internals\n", - __func__)); - break; - - default: - DHD_ERROR(("%s: skipping 0x%04x/0x%04x, not a dongle\n", - __func__, venid, devid)); - return NULL; - } - - /* Allocate private bus interface state */ - bus = kzalloc(sizeof(dhd_bus_t), GFP_ATOMIC); - if (!bus) { - DHD_ERROR(("%s: kmalloc of dhd_bus_t failed\n", __func__)); - goto fail; - } - bus->sdh = sdh; - bus->cl_devid = (u16) devid; - bus->bus = DHD_BUS; - bus->tx_seq = SDPCM_SEQUENCE_WRAP - 1; - bus->usebufpool = false; /* Use bufpool if allocated, - else use locally malloced rxbuf */ - - /* attempt to attach to the dongle */ - if (!(dhdsdio_probe_attach(bus, sdh, regsva, devid))) { - DHD_ERROR(("%s: dhdsdio_probe_attach failed\n", __func__)); - goto fail; - } - - /* Attach to the dhd/OS/network interface */ - bus->dhd = dhd_attach(bus, SDPCM_RESERVE); - if (!bus->dhd) { - DHD_ERROR(("%s: dhd_attach failed\n", __func__)); - goto fail; - } - - /* Allocate buffers */ - if (!(dhdsdio_probe_malloc(bus, sdh))) { - DHD_ERROR(("%s: dhdsdio_probe_malloc failed\n", __func__)); - goto fail; - } - - if (!(dhdsdio_probe_init(bus, sdh))) { - DHD_ERROR(("%s: dhdsdio_probe_init failed\n", __func__)); - goto fail; - } - - /* Register interrupt callback, but mask it (not operational yet). */ - DHD_INTR(("%s: disable SDIO interrupts (not interested yet)\n", - __func__)); - bcmsdh_intr_disable(sdh); - ret = bcmsdh_intr_reg(sdh, dhdsdio_isr, bus); - if (ret != 0) { - DHD_ERROR(("%s: FAILED: bcmsdh_intr_reg returned %d\n", - __func__, ret)); - goto fail; - } - DHD_INTR(("%s: registered SDIO interrupt function ok\n", __func__)); - - DHD_INFO(("%s: completed!!\n", __func__)); - - /* if firmware path present try to download and bring up bus */ - ret = dhd_bus_start(bus->dhd); - if (ret != 0) { - if (ret == -ENOLINK) { - DHD_ERROR(("%s: dongle is not responding\n", __func__)); - goto fail; - } - } - /* Ok, have the per-port tell the stack we're open for business */ - if (dhd_net_attach(bus->dhd, 0) != 0) { - DHD_ERROR(("%s: Net attach failed!!\n", __func__)); - goto fail; - } - - return bus; - -fail: - dhdsdio_release(bus); - return NULL; -} - -static bool -dhdsdio_probe_attach(struct dhd_bus *bus, void *sdh, void *regsva, u16 devid) -{ - u8 clkctl = 0; - int err = 0; - - bus->alp_only = true; - - /* Return the window to backplane enumeration space for core access */ - if (dhdsdio_set_siaddr_window(bus, SI_ENUM_BASE)) - DHD_ERROR(("%s: FAILED to return to SI_ENUM_BASE\n", __func__)); - -#ifdef DHD_DEBUG - printk(KERN_DEBUG "F1 signature read @0x18000000=0x%4x\n", - bcmsdh_reg_read(bus->sdh, SI_ENUM_BASE, 4)); - -#endif /* DHD_DEBUG */ - - /* - * Force PLL off until dhdsdio_chip_attach() - * programs PLL control regs - */ - - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - DHD_INIT_CLKCTL1, &err); - if (!err) - clkctl = - bcmsdh_cfg_read(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - &err); - - if (err || ((clkctl & ~SBSDIO_AVBITS) != DHD_INIT_CLKCTL1)) { - DHD_ERROR(("dhdsdio_probe: ChipClkCSR access: err %d wrote " - "0x%02x read 0x%02x\n", - err, DHD_INIT_CLKCTL1, clkctl)); - goto fail; - } -#ifdef DHD_DEBUG - if (DHD_INFO_ON()) { - uint fn, numfn; - u8 *cis[SDIOD_MAX_IOFUNCS]; - int err = 0; - - numfn = bcmsdh_query_iofnum(sdh); - ASSERT(numfn <= SDIOD_MAX_IOFUNCS); - - /* Make sure ALP is available before trying to read CIS */ - SPINWAIT(((clkctl = bcmsdh_cfg_read(sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - NULL)), - !SBSDIO_ALPAV(clkctl)), PMU_MAX_TRANSITION_DLY); - - /* Now request ALP be put on the bus */ - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - DHD_INIT_CLKCTL2, &err); - udelay(65); - - for (fn = 0; fn <= numfn; fn++) { - cis[fn] = kzalloc(SBSDIO_CIS_SIZE_LIMIT, GFP_ATOMIC); - if (!cis[fn]) { - DHD_INFO(("dhdsdio_probe: fn %d cis malloc " - "failed\n", fn)); - break; - } - - err = bcmsdh_cis_read(sdh, fn, cis[fn], - SBSDIO_CIS_SIZE_LIMIT); - if (err) { - DHD_INFO(("dhdsdio_probe: fn %d cis read " - "err %d\n", fn, err)); - kfree(cis[fn]); - break; - } - dhd_dump_cis(fn, cis[fn]); - } - - while (fn-- > 0) { - ASSERT(cis[fn]); - kfree(cis[fn]); - } - - if (err) { - DHD_ERROR(("dhdsdio_probe: error read/parsing CIS\n")); - goto fail; - } - } -#endif /* DHD_DEBUG */ - - if (dhdsdio_chip_attach(bus, regsva)) { - DHD_ERROR(("%s: dhdsdio_chip_attach failed!\n", __func__)); - goto fail; - } - - bcmsdh_chipinfo(sdh, bus->ci->chip, bus->ci->chiprev); - - if (!dhdsdio_chipmatch((u16) bus->ci->chip)) { - DHD_ERROR(("%s: unsupported chip: 0x%04x\n", - __func__, bus->ci->chip)); - goto fail; - } - - dhdsdio_sdiod_drive_strength_init(bus, dhd_sdiod_drive_strength); - - /* Get info on the ARM and SOCRAM cores... */ - if (!DHD_NOPMU(bus)) { - bus->armrev = SBCOREREV(bcmsdh_reg_read(bus->sdh, - CORE_SB(bus->ci->armcorebase, sbidhigh), 4)); - bus->orig_ramsize = bus->ci->ramsize; - if (!(bus->orig_ramsize)) { - DHD_ERROR(("%s: failed to find SOCRAM memory!\n", - __func__)); - goto fail; - } - bus->ramsize = bus->orig_ramsize; - if (dhd_dongle_memsize) - dhd_dongle_setmemsize(bus, dhd_dongle_memsize); - - DHD_ERROR(("DHD: dongle ram size is set to %d(orig %d)\n", - bus->ramsize, bus->orig_ramsize)); - } - - bus->regs = (void *)bus->ci->buscorebase; - - /* Set core control so an SDIO reset does a backplane reset */ - OR_REG(&bus->regs->corecontrol, CC_BPRESEN); - - bcm_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN); - - /* Locate an appropriately-aligned portion of hdrbuf */ - bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0], DHD_SDALIGN); - - /* Set the poll and/or interrupt flags */ - bus->intr = (bool) dhd_intr; - bus->poll = (bool) dhd_poll; - if (bus->poll) - bus->pollrate = 1; - - return true; - -fail: - return false; -} - -static bool dhdsdio_probe_malloc(dhd_bus_t *bus, void *sdh) -{ - DHD_TRACE(("%s: Enter\n", __func__)); - - if (bus->dhd->maxctl) { - bus->rxblen = - roundup((bus->dhd->maxctl + SDPCM_HDRLEN), - ALIGNMENT) + DHD_SDALIGN; - bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC); - if (!(bus->rxbuf)) { - DHD_ERROR(("%s: kmalloc of %d-byte rxbuf failed\n", - __func__, bus->rxblen)); - goto fail; - } - } - - /* Allocate buffer to receive glomed packet */ - bus->databuf = kmalloc(MAX_DATA_BUF, GFP_ATOMIC); - if (!(bus->databuf)) { - DHD_ERROR(("%s: kmalloc of %d-byte databuf failed\n", - __func__, MAX_DATA_BUF)); - /* release rxbuf which was already located as above */ - if (!bus->rxblen) - kfree(bus->rxbuf); - goto fail; - } - - /* Align the buffer */ - if ((unsigned long)bus->databuf % DHD_SDALIGN) - bus->dataptr = - bus->databuf + (DHD_SDALIGN - - ((unsigned long)bus->databuf % DHD_SDALIGN)); - else - bus->dataptr = bus->databuf; - - return true; - -fail: - return false; -} - -static bool dhdsdio_probe_init(dhd_bus_t *bus, void *sdh) -{ - s32 fnum; - - DHD_TRACE(("%s: Enter\n", __func__)); - -#ifdef SDTEST - dhdsdio_pktgen_init(bus); -#endif /* SDTEST */ - - /* Disable F2 to clear any intermediate frame state on the dongle */ - bcmsdh_cfg_write(sdh, SDIO_FUNC_0, SDIOD_CCCR_IOEN, SDIO_FUNC_ENABLE_1, - NULL); - - bus->dhd->busstate = DHD_BUS_DOWN; - bus->sleeping = false; - bus->rxflow = false; - bus->prev_rxlim_hit = 0; - - /* Done with backplane-dependent accesses, can drop clock... */ - bcmsdh_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); - - /* ...and initialize clock/power states */ - bus->clkstate = CLK_SDONLY; - bus->idletime = (s32) dhd_idletime; - bus->idleclock = DHD_IDLE_ACTIVE; - - /* Query the SD clock speed */ - if (bcmsdh_iovar_op(sdh, "sd_divisor", NULL, 0, - &bus->sd_divisor, sizeof(s32), - false) != 0) { - DHD_ERROR(("%s: fail on %s get\n", __func__, "sd_divisor")); - bus->sd_divisor = -1; - } else { - DHD_INFO(("%s: Initial value for %s is %d\n", - __func__, "sd_divisor", bus->sd_divisor)); - } - - /* Query the SD bus mode */ - if (bcmsdh_iovar_op(sdh, "sd_mode", NULL, 0, - &bus->sd_mode, sizeof(s32), false) != 0) { - DHD_ERROR(("%s: fail on %s get\n", __func__, "sd_mode")); - bus->sd_mode = -1; - } else { - DHD_INFO(("%s: Initial value for %s is %d\n", - __func__, "sd_mode", bus->sd_mode)); - } - - /* Query the F2 block size, set roundup accordingly */ - fnum = 2; - if (bcmsdh_iovar_op(sdh, "sd_blocksize", &fnum, sizeof(s32), - &bus->blocksize, sizeof(s32), false) != 0) { - bus->blocksize = 0; - DHD_ERROR(("%s: fail on %s get\n", __func__, "sd_blocksize")); - } else { - DHD_INFO(("%s: Initial value for %s is %d\n", - __func__, "sd_blocksize", bus->blocksize)); - } - bus->roundup = min(max_roundup, bus->blocksize); - - /* Query if bus module supports packet chaining, - default to use if supported */ - if (bcmsdh_iovar_op(sdh, "sd_rxchain", NULL, 0, - &bus->sd_rxchain, sizeof(s32), - false) != 0) { - bus->sd_rxchain = false; - } else { - DHD_INFO(("%s: bus module (through bcmsdh API) %s chaining\n", - __func__, - (bus->sd_rxchain ? "supports" : "does not support"))); - } - bus->use_rxchain = (bool) bus->sd_rxchain; - - return true; -} - -bool -dhd_bus_download_firmware(struct dhd_bus *bus, char *fw_path, char *nv_path) -{ - bool ret; - bus->fw_path = fw_path; - bus->nv_path = nv_path; - - ret = dhdsdio_download_firmware(bus, bus->sdh); - - return ret; -} - -static bool -dhdsdio_download_firmware(struct dhd_bus *bus, void *sdh) -{ - bool ret; - - /* Download the firmware */ - dhdsdio_clkctl(bus, CLK_AVAIL, false); - - ret = _dhdsdio_download_firmware(bus) == 0; - - dhdsdio_clkctl(bus, CLK_SDONLY, false); - - return ret; -} - -/* Detach and free everything */ -static void dhdsdio_release(dhd_bus_t *bus) -{ - DHD_TRACE(("%s: Enter\n", __func__)); - - if (bus) { - /* De-register interrupt handler */ - bcmsdh_intr_disable(bus->sdh); - bcmsdh_intr_dereg(bus->sdh); - - if (bus->dhd) { - dhd_detach(bus->dhd); - dhdsdio_release_dongle(bus); - bus->dhd = NULL; - } - - dhdsdio_release_malloc(bus); - - kfree(bus); - } - - DHD_TRACE(("%s: Disconnected\n", __func__)); -} - -static void dhdsdio_release_malloc(dhd_bus_t *bus) -{ - DHD_TRACE(("%s: Enter\n", __func__)); - - if (bus->dhd && bus->dhd->dongle_reset) - return; - - if (bus->rxbuf) { - kfree(bus->rxbuf); - bus->rxctl = bus->rxbuf = NULL; - bus->rxlen = 0; - } - - kfree(bus->databuf); - bus->databuf = NULL; -} - -static void dhdsdio_release_dongle(dhd_bus_t *bus) -{ - DHD_TRACE(("%s: Enter\n", __func__)); - - if (bus->dhd && bus->dhd->dongle_reset) - return; - - if (bus->ci) { - dhdsdio_clkctl(bus, CLK_AVAIL, false); - dhdsdio_clkctl(bus, CLK_NONE, false); - dhdsdio_chip_detach(bus); - if (bus->vars && bus->varsz) - kfree(bus->vars); - bus->vars = NULL; - } - - DHD_TRACE(("%s: Disconnected\n", __func__)); -} - -static void dhdsdio_disconnect(void *ptr) -{ - dhd_bus_t *bus = (dhd_bus_t *)ptr; - - DHD_TRACE(("%s: Enter\n", __func__)); - - if (bus) { - ASSERT(bus->dhd); - dhdsdio_release(bus); - } - - DHD_TRACE(("%s: Disconnected\n", __func__)); -} - -/* Register/Unregister functions are called by the main DHD entry - * point (e.g. module insertion) to link with the bus driver, in - * order to look for or await the device. - */ - -static bcmsdh_driver_t dhd_sdio = { - dhdsdio_probe, - dhdsdio_disconnect -}; - -int dhd_bus_register(void) -{ - DHD_TRACE(("%s: Enter\n", __func__)); - - return bcmsdh_register(&dhd_sdio); -} - -void dhd_bus_unregister(void) -{ - DHD_TRACE(("%s: Enter\n", __func__)); - - bcmsdh_unregister(); -} - -#ifdef BCMEMBEDIMAGE -static int dhdsdio_download_code_array(struct dhd_bus *bus) -{ - int bcmerror = -1; - int offset = 0; - - DHD_INFO(("%s: download embedded firmware...\n", __func__)); - - /* Download image */ - while ((offset + MEMBLOCK) < sizeof(dlarray)) { - bcmerror = - dhdsdio_membytes(bus, true, offset, dlarray + offset, - MEMBLOCK); - if (bcmerror) { - DHD_ERROR(("%s: error %d on writing %d membytes at " - "0x%08x\n", - __func__, bcmerror, MEMBLOCK, offset)); - goto err; - } - - offset += MEMBLOCK; - } - - if (offset < sizeof(dlarray)) { - bcmerror = dhdsdio_membytes(bus, true, offset, - dlarray + offset, - sizeof(dlarray) - offset); - if (bcmerror) { - DHD_ERROR(("%s: error %d on writing %d membytes at " - "0x%08x\n", __func__, bcmerror, - sizeof(dlarray) - offset, offset)); - goto err; - } - } -#ifdef DHD_DEBUG - /* Upload and compare the downloaded code */ - { - unsigned char *ularray; - - ularray = kmalloc(bus->ramsize, GFP_ATOMIC); - if (!ularray) { - bcmerror = -ENOMEM; - goto err; - } - /* Upload image to verify downloaded contents. */ - offset = 0; - memset(ularray, 0xaa, bus->ramsize); - while ((offset + MEMBLOCK) < sizeof(dlarray)) { - bcmerror = - dhdsdio_membytes(bus, false, offset, - ularray + offset, MEMBLOCK); - if (bcmerror) { - DHD_ERROR(("%s: error %d on reading %d membytes" - " at 0x%08x\n", - __func__, bcmerror, MEMBLOCK, offset)); - goto free; - } - - offset += MEMBLOCK; - } - - if (offset < sizeof(dlarray)) { - bcmerror = dhdsdio_membytes(bus, false, offset, - ularray + offset, - sizeof(dlarray) - offset); - if (bcmerror) { - DHD_ERROR(("%s: error %d on reading %d membytes at 0x%08x\n", - __func__, bcmerror, - sizeof(dlarray) - offset, offset)); - goto free; - } - } - - if (memcmp(dlarray, ularray, sizeof(dlarray))) { - DHD_ERROR(("%s: Downloaded image is corrupted.\n", - __func__)); - ASSERT(0); - goto free; - } else - DHD_ERROR(("%s: Download/Upload/Compare succeeded.\n", - __func__)); -free: - kfree(ularray); - } -#endif /* DHD_DEBUG */ - -err: - return bcmerror; -} -#endif /* BCMEMBEDIMAGE */ - -static int dhdsdio_download_code_file(struct dhd_bus *bus, char *fw_path) -{ - int bcmerror = -1; - int offset = 0; - uint len; - void *image = NULL; - u8 *memblock = NULL, *memptr; - - DHD_INFO(("%s: download firmware %s\n", __func__, fw_path)); - - image = dhd_os_open_image(fw_path); - if (image == NULL) - goto err; - - memptr = memblock = kmalloc(MEMBLOCK + DHD_SDALIGN, GFP_ATOMIC); - if (memblock == NULL) { - DHD_ERROR(("%s: Failed to allocate memory %d bytes\n", - __func__, MEMBLOCK)); - goto err; - } - if ((u32)(unsigned long)memblock % DHD_SDALIGN) - memptr += - (DHD_SDALIGN - ((u32)(unsigned long)memblock % DHD_SDALIGN)); - - /* Download image */ - while ((len = - dhd_os_get_image_block((char *)memptr, MEMBLOCK, image))) { - bcmerror = dhdsdio_membytes(bus, true, offset, memptr, len); - if (bcmerror) { - DHD_ERROR(("%s: error %d on writing %d membytes at " - "0x%08x\n", __func__, bcmerror, MEMBLOCK, offset)); - goto err; - } - - offset += MEMBLOCK; - } - -err: - kfree(memblock); - - if (image) - dhd_os_close_image(image); - - return bcmerror; -} - -/* - * ProcessVars:Takes a buffer of "<var>=<value>\n" lines read from a file - * and ending in a NUL. - * Removes carriage returns, empty lines, comment lines, and converts - * newlines to NULs. - * Shortens buffer as needed and pads with NULs. End of buffer is marked - * by two NULs. -*/ - -static uint process_nvram_vars(char *varbuf, uint len) -{ - char *dp; - bool findNewline; - int column; - uint buf_len, n; - - dp = varbuf; - - findNewline = false; - column = 0; - - for (n = 0; n < len; n++) { - if (varbuf[n] == 0) - break; - if (varbuf[n] == '\r') - continue; - if (findNewline && varbuf[n] != '\n') - continue; - findNewline = false; - if (varbuf[n] == '#') { - findNewline = true; - continue; - } - if (varbuf[n] == '\n') { - if (column == 0) - continue; - *dp++ = 0; - column = 0; - continue; - } - *dp++ = varbuf[n]; - column++; - } - buf_len = dp - varbuf; - - while (dp < varbuf + n) - *dp++ = 0; - - return buf_len; -} - -/* - EXAMPLE: nvram_array - nvram_arry format: - name=value - Use carriage return at the end of each assignment, - and an empty string with - carriage return at the end of array. - - For example: - unsigned char nvram_array[] = {"name1=value1\n", - "name2=value2\n", "\n"}; - Hex values start with 0x, and mac addr format: xx:xx:xx:xx:xx:xx. - - Search "EXAMPLE: nvram_array" to see how the array is activated. -*/ - -void dhd_bus_set_nvram_params(struct dhd_bus *bus, const char *nvram_params) -{ - bus->nvram_params = nvram_params; -} - -static int dhdsdio_download_nvram(struct dhd_bus *bus) -{ - int bcmerror = -1; - uint len; - void *image = NULL; - char *memblock = NULL; - char *bufp; - char *nv_path; - bool nvram_file_exists; - - nv_path = bus->nv_path; - - nvram_file_exists = ((nv_path != NULL) && (nv_path[0] != '\0')); - if (!nvram_file_exists && (bus->nvram_params == NULL)) - return 0; - - if (nvram_file_exists) { - image = dhd_os_open_image(nv_path); - if (image == NULL) - goto err; - } - - memblock = kmalloc(MEMBLOCK, GFP_ATOMIC); - if (memblock == NULL) { - DHD_ERROR(("%s: Failed to allocate memory %d bytes\n", - __func__, MEMBLOCK)); - goto err; - } - - /* Download variables */ - if (nvram_file_exists) { - len = dhd_os_get_image_block(memblock, MEMBLOCK, image); - } else { - len = strlen(bus->nvram_params); - ASSERT(len <= MEMBLOCK); - if (len > MEMBLOCK) - len = MEMBLOCK; - memcpy(memblock, bus->nvram_params, len); - } - - if (len > 0 && len < MEMBLOCK) { - bufp = (char *)memblock; - bufp[len] = 0; - len = process_nvram_vars(bufp, len); - bufp += len; - *bufp++ = 0; - if (len) - bcmerror = dhdsdio_downloadvars(bus, memblock, len + 1); - if (bcmerror) { - DHD_ERROR(("%s: error downloading vars: %d\n", - __func__, bcmerror)); - } - } else { - DHD_ERROR(("%s: error reading nvram file: %d\n", - __func__, len)); - bcmerror = -EIO; - } - -err: - kfree(memblock); - - if (image) - dhd_os_close_image(image); - - return bcmerror; -} - -static int _dhdsdio_download_firmware(struct dhd_bus *bus) -{ - int bcmerror = -1; - - bool embed = false; /* download embedded firmware */ - bool dlok = false; /* download firmware succeeded */ - - /* Out immediately if no image to download */ - if ((bus->fw_path == NULL) || (bus->fw_path[0] == '\0')) { -#ifdef BCMEMBEDIMAGE - embed = true; -#else - return bcmerror; -#endif - } - - /* Keep arm in reset */ - if (dhdsdio_download_state(bus, true)) { - DHD_ERROR(("%s: error placing ARM core in reset\n", __func__)); - goto err; - } - - /* External image takes precedence if specified */ - if ((bus->fw_path != NULL) && (bus->fw_path[0] != '\0')) { - if (dhdsdio_download_code_file(bus, bus->fw_path)) { - DHD_ERROR(("%s: dongle image file download failed\n", - __func__)); -#ifdef BCMEMBEDIMAGE - embed = true; -#else - goto err; -#endif - } else { - embed = false; - dlok = true; - } - } -#ifdef BCMEMBEDIMAGE - if (embed) { - if (dhdsdio_download_code_array(bus)) { - DHD_ERROR(("%s: dongle image array download failed\n", - __func__)); - goto err; - } else { - dlok = true; - } - } -#endif - if (!dlok) { - DHD_ERROR(("%s: dongle image download failed\n", __func__)); - goto err; - } - - /* EXAMPLE: nvram_array */ - /* If a valid nvram_arry is specified as above, it can be passed - down to dongle */ - /* dhd_bus_set_nvram_params(bus, (char *)&nvram_array); */ - - /* External nvram takes precedence if specified */ - if (dhdsdio_download_nvram(bus)) { - DHD_ERROR(("%s: dongle nvram file download failed\n", - __func__)); - } - - /* Take arm out of reset */ - if (dhdsdio_download_state(bus, false)) { - DHD_ERROR(("%s: error getting out of ARM core reset\n", - __func__)); - goto err; - } - - bcmerror = 0; - -err: - return bcmerror; -} - - -static int -dhd_bcmsdh_send_buf(dhd_bus_t *bus, u32 addr, uint fn, uint flags, - u8 *buf, uint nbytes, struct sk_buff *pkt, - bcmsdh_cmplt_fn_t complete, void *handle) -{ - return bcmsdh_send_buf - (bus->sdh, addr, fn, flags, buf, nbytes, pkt, complete, - handle); -} - -uint dhd_bus_chip(struct dhd_bus *bus) -{ - ASSERT(bus->ci != NULL); - return bus->ci->chip; -} - -void *dhd_bus_pub(struct dhd_bus *bus) -{ - return bus->dhd; -} - -void *dhd_bus_txq(struct dhd_bus *bus) -{ - return &bus->txq; -} - -uint dhd_bus_hdrlen(struct dhd_bus *bus) -{ - return SDPCM_HDRLEN; -} - -int dhd_bus_devreset(dhd_pub_t *dhdp, u8 flag) -{ - int bcmerror = 0; - dhd_bus_t *bus; - - bus = dhdp->bus; - - if (flag == true) { - if (!bus->dhd->dongle_reset) { - /* Expect app to have torn down any - connection before calling */ - /* Stop the bus, disable F2 */ - dhd_bus_stop(bus, false); - - /* Clean tx/rx buffer pointers, - detach from the dongle */ - dhdsdio_release_dongle(bus); - - bus->dhd->dongle_reset = true; - bus->dhd->up = false; - - DHD_TRACE(("%s: WLAN OFF DONE\n", __func__)); - /* App can now remove power from device */ - } else - bcmerror = -EIO; - } else { - /* App must have restored power to device before calling */ - - DHD_TRACE(("\n\n%s: == WLAN ON ==\n", __func__)); - - if (bus->dhd->dongle_reset) { - /* Turn on WLAN */ - /* Reset SD client */ - bcmsdh_reset(bus->sdh); - - /* Attempt to re-attach & download */ - if (dhdsdio_probe_attach(bus, bus->sdh, - (u32 *) SI_ENUM_BASE, - bus->cl_devid)) { - /* Attempt to download binary to the dongle */ - if (dhdsdio_probe_init - (bus, bus->sdh) - && dhdsdio_download_firmware(bus, - bus->sdh)) { - - /* Re-init bus, enable F2 transfer */ - dhd_bus_init((dhd_pub_t *) bus->dhd, - false); - -#if defined(OOB_INTR_ONLY) - dhd_enable_oob_intr(bus, true); -#endif /* defined(OOB_INTR_ONLY) */ - - bus->dhd->dongle_reset = false; - bus->dhd->up = true; - - DHD_TRACE(("%s: WLAN ON DONE\n", - __func__)); - } else - bcmerror = -EIO; - } else - bcmerror = -EIO; - } else { - bcmerror = -EISCONN; - DHD_ERROR(("%s: Set DEVRESET=false invoked when device " - "is on\n", __func__)); - bcmerror = -EIO; - } - } - return bcmerror; -} - -static int -dhdsdio_chip_recognition(bcmsdh_info_t *sdh, struct chip_info *ci, void *regs) -{ - u32 regdata; - - /* - * Get CC core rev - * Chipid is assume to be at offset 0 from regs arg - * For different chiptypes or old sdio hosts w/o chipcommon, - * other ways of recognition should be added here. - */ - ci->cccorebase = (u32)regs; - regdata = bcmsdh_reg_read(sdh, CORE_CC_REG(ci->cccorebase, chipid), 4); - ci->chip = regdata & CID_ID_MASK; - ci->chiprev = (regdata & CID_REV_MASK) >> CID_REV_SHIFT; - - DHD_INFO(("%s: chipid=0x%x chiprev=%d\n", - __func__, ci->chip, ci->chiprev)); - - /* Address of cores for new chips should be added here */ - switch (ci->chip) { - case BCM4329_CHIP_ID: - ci->buscorebase = BCM4329_CORE_BUS_BASE; - ci->ramcorebase = BCM4329_CORE_SOCRAM_BASE; - ci->armcorebase = BCM4329_CORE_ARM_BASE; - ci->ramsize = BCM4329_RAMSIZE; - break; - default: - DHD_ERROR(("%s: chipid 0x%x is not supported\n", - __func__, ci->chip)); - return -ENODEV; - } - - regdata = bcmsdh_reg_read(sdh, - CORE_SB(ci->cccorebase, sbidhigh), 4); - ci->ccrev = SBCOREREV(regdata); - - regdata = bcmsdh_reg_read(sdh, - CORE_CC_REG(ci->cccorebase, pmucapabilities), 4); - ci->pmurev = regdata & PCAP_REV_MASK; - - regdata = bcmsdh_reg_read(sdh, CORE_SB(ci->buscorebase, sbidhigh), 4); - ci->buscorerev = SBCOREREV(regdata); - ci->buscoretype = (regdata & SBIDH_CC_MASK) >> SBIDH_CC_SHIFT; - - DHD_INFO(("%s: ccrev=%d, pmurev=%d, buscore rev/type=%d/0x%x\n", - __func__, ci->ccrev, ci->pmurev, - ci->buscorerev, ci->buscoretype)); - - /* get chipcommon capabilites */ - ci->cccaps = bcmsdh_reg_read(sdh, - CORE_CC_REG(ci->cccorebase, capabilities), 4); - - return 0; -} - -static void -dhdsdio_chip_disablecore(bcmsdh_info_t *sdh, u32 corebase) -{ - u32 regdata; - - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbtmstatelow), 4); - if (regdata & SBTML_RESET) - return; - - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbtmstatelow), 4); - if ((regdata & (SICF_CLOCK_EN << SBTML_SICF_SHIFT)) != 0) { - /* - * set target reject and spin until busy is clear - * (preserve core-specific bits) - */ - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbtmstatelow), 4); - bcmsdh_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, - regdata | SBTML_REJ); - - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbtmstatelow), 4); - udelay(1); - SPINWAIT((bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbtmstatehigh), 4) & - SBTMH_BUSY), 100000); - - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbtmstatehigh), 4); - if (regdata & SBTMH_BUSY) - DHD_ERROR(("%s: ARM core still busy\n", __func__)); - - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbidlow), 4); - if (regdata & SBIDL_INIT) { - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbimstate), 4) | - SBIM_RJ; - bcmsdh_reg_write(sdh, - CORE_SB(corebase, sbimstate), 4, - regdata); - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbimstate), 4); - udelay(1); - SPINWAIT((bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbimstate), 4) & - SBIM_BY), 100000); - } - - /* set reset and reject while enabling the clocks */ - bcmsdh_reg_write(sdh, - CORE_SB(corebase, sbtmstatelow), 4, - (((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | - SBTML_REJ | SBTML_RESET)); - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbtmstatelow), 4); - udelay(10); - - /* clear the initiator reject bit */ - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbidlow), 4); - if (regdata & SBIDL_INIT) { - regdata = bcmsdh_reg_read(sdh, - CORE_SB(corebase, sbimstate), 4) & - ~SBIM_RJ; - bcmsdh_reg_write(sdh, - CORE_SB(corebase, sbimstate), 4, - regdata); - } - } - - /* leave reset and reject asserted */ - bcmsdh_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, - (SBTML_REJ | SBTML_RESET)); - udelay(1); -} - -static int -dhdsdio_chip_attach(struct dhd_bus *bus, void *regs) -{ - struct chip_info *ci; - int err; - u8 clkval, clkset; - - DHD_TRACE(("%s: Enter\n", __func__)); - - /* alloc chip_info_t */ - ci = kmalloc(sizeof(struct chip_info), GFP_ATOMIC); - if (NULL == ci) { - DHD_ERROR(("%s: malloc failed!\n", __func__)); - return -ENOMEM; - } - - memset((unsigned char *)ci, 0, sizeof(struct chip_info)); - - /* bus/core/clk setup for register access */ - /* Try forcing SDIO core to do ALPAvail request only */ - clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ; - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, - clkset, &err); - if (err) { - DHD_ERROR(("%s: error writing for HT off\n", __func__)); - goto fail; - } - - /* If register supported, wait for ALPAvail and then force ALP */ - /* This may take up to 15 milliseconds */ - clkval = bcmsdh_cfg_read(bus->sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, NULL); - if ((clkval & ~SBSDIO_AVBITS) == clkset) { - SPINWAIT(((clkval = - bcmsdh_cfg_read(bus->sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - NULL)), - !SBSDIO_ALPAV(clkval)), - PMU_MAX_TRANSITION_DLY); - if (!SBSDIO_ALPAV(clkval)) { - DHD_ERROR(("%s: timeout on ALPAV wait, clkval 0x%02x\n", - __func__, clkval)); - err = -EBUSY; - goto fail; - } - clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | - SBSDIO_FORCE_ALP; - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, - SBSDIO_FUNC1_CHIPCLKCSR, - clkset, &err); - udelay(65); - } else { - DHD_ERROR(("%s: ChipClkCSR access: wrote 0x%02x read 0x%02x\n", - __func__, clkset, clkval)); - err = -EACCES; - goto fail; - } - - /* Also, disable the extra SDIO pull-ups */ - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_SDIOPULLUP, 0, - NULL); - - err = dhdsdio_chip_recognition(bus->sdh, ci, regs); - if (err) - goto fail; - - /* - * Make sure any on-chip ARM is off (in case strapping is wrong), - * or downloaded code was already running. - */ - dhdsdio_chip_disablecore(bus->sdh, ci->armcorebase); - - bcmsdh_reg_write(bus->sdh, - CORE_CC_REG(ci->cccorebase, gpiopullup), 4, 0); - bcmsdh_reg_write(bus->sdh, - CORE_CC_REG(ci->cccorebase, gpiopulldown), 4, 0); - - /* Disable F2 to clear any intermediate frame state on the dongle */ - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_0, SDIOD_CCCR_IOEN, - SDIO_FUNC_ENABLE_1, NULL); - - /* WAR: cmd52 backplane read so core HW will drop ALPReq */ - clkval = bcmsdh_cfg_read(bus->sdh, SDIO_FUNC_1, - 0, NULL); - - /* Done with backplane-dependent accesses, can drop clock... */ - bcmsdh_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, 0, - NULL); - - bus->ci = ci; - return 0; -fail: - bus->ci = NULL; - kfree(ci); - return err; -} - -static void -dhdsdio_chip_resetcore(bcmsdh_info_t *sdh, u32 corebase) -{ - u32 regdata; - - /* - * Must do the disable sequence first to work for - * arbitrary current core state. - */ - dhdsdio_chip_disablecore(sdh, corebase); - - /* - * Now do the initialization sequence. - * set reset while enabling the clock and - * forcing them on throughout the core - */ - bcmsdh_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, - ((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | - SBTML_RESET); - udelay(1); - - regdata = bcmsdh_reg_read(sdh, CORE_SB(corebase, sbtmstatehigh), 4); - if (regdata & SBTMH_SERR) - bcmsdh_reg_write(sdh, CORE_SB(corebase, sbtmstatehigh), 4, 0); - - regdata = bcmsdh_reg_read(sdh, CORE_SB(corebase, sbimstate), 4); - if (regdata & (SBIM_IBE | SBIM_TO)) - bcmsdh_reg_write(sdh, CORE_SB(corebase, sbimstate), 4, - regdata & ~(SBIM_IBE | SBIM_TO)); - - /* clear reset and allow it to propagate throughout the core */ - bcmsdh_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, - (SICF_FGC << SBTML_SICF_SHIFT) | - (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); - udelay(1); - - /* leave clock enabled */ - bcmsdh_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, - (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); - udelay(1); -} - -/* SDIO Pad drive strength to select value mappings */ -struct sdiod_drive_str { - u8 strength; /* Pad Drive Strength in mA */ - u8 sel; /* Chip-specific select value */ -}; - -/* SDIO Drive Strength to sel value table for PMU Rev 1 */ -static const struct sdiod_drive_str sdiod_drive_strength_tab1[] = { - { - 4, 0x2}, { - 2, 0x3}, { - 1, 0x0}, { - 0, 0x0} - }; - -/* SDIO Drive Strength to sel value table for PMU Rev 2, 3 */ -static const struct sdiod_drive_str sdiod_drive_strength_tab2[] = { - { - 12, 0x7}, { - 10, 0x6}, { - 8, 0x5}, { - 6, 0x4}, { - 4, 0x2}, { - 2, 0x1}, { - 0, 0x0} - }; - -/* SDIO Drive Strength to sel value table for PMU Rev 8 (1.8V) */ -static const struct sdiod_drive_str sdiod_drive_strength_tab3[] = { - { - 32, 0x7}, { - 26, 0x6}, { - 22, 0x5}, { - 16, 0x4}, { - 12, 0x3}, { - 8, 0x2}, { - 4, 0x1}, { - 0, 0x0} - }; - -#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu)) - -static void -dhdsdio_sdiod_drive_strength_init(struct dhd_bus *bus, u32 drivestrength) { - struct sdiod_drive_str *str_tab = NULL; - u32 str_mask = 0; - u32 str_shift = 0; - char chn[8]; - - if (!(bus->ci->cccaps & CC_CAP_PMU)) - return; - - switch (SDIOD_DRVSTR_KEY(bus->ci->chip, bus->ci->pmurev)) { - case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 1): - str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab1; - str_mask = 0x30000000; - str_shift = 28; - break; - case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 2): - case SDIOD_DRVSTR_KEY(BCM4325_CHIP_ID, 3): - str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab2; - str_mask = 0x00003800; - str_shift = 11; - break; - case SDIOD_DRVSTR_KEY(BCM4336_CHIP_ID, 8): - str_tab = (struct sdiod_drive_str *)&sdiod_drive_strength_tab3; - str_mask = 0x00003800; - str_shift = 11; - break; - default: - DHD_ERROR(("No SDIO Drive strength init" - "done for chip %s rev %d pmurev %d\n", - bcm_chipname(bus->ci->chip, chn, 8), - bus->ci->chiprev, bus->ci->pmurev)); - break; - } - - if (str_tab != NULL) { - u32 drivestrength_sel = 0; - u32 cc_data_temp; - int i; - - for (i = 0; str_tab[i].strength != 0; i++) { - if (drivestrength >= str_tab[i].strength) { - drivestrength_sel = str_tab[i].sel; - break; - } - } - - bcmsdh_reg_write(bus->sdh, - CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr), - 4, 1); - cc_data_temp = bcmsdh_reg_read(bus->sdh, - CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr), 4); - cc_data_temp &= ~str_mask; - drivestrength_sel <<= str_shift; - cc_data_temp |= drivestrength_sel; - bcmsdh_reg_write(bus->sdh, - CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr), - 4, cc_data_temp); - - DHD_INFO(("SDIO: %dmA drive strength selected, set to 0x%08x\n", - drivestrength, cc_data_temp)); - } -} - -static void -dhdsdio_chip_detach(struct dhd_bus *bus) -{ - DHD_TRACE(("%s: Enter\n", __func__)); - - kfree(bus->ci); - bus->ci = NULL; -} |