| /* |
| * 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 <linux/sched.h> |
| #include <linux/mmc/sdio.h> |
| #include <asm/unaligned.h> |
| #include <defs.h> |
| #include <brcmu_wifi.h> |
| #include <brcmu_utils.h> |
| #include <brcm_hw_ids.h> |
| #include <soc.h> |
| #include "sdio_host.h" |
| |
| /* register access macros */ |
| #ifndef __BIG_ENDIAN |
| #ifndef __mips__ |
| #define R_REG(r) \ |
| brcmf_sdcard_reg_read(NULL, (unsigned long)(r), sizeof(*(r))) |
| #else /* __mips__ */ |
| #define R_REG(r) \ |
| ({ \ |
| __typeof(*(r)) __osl_v; \ |
| __asm__ __volatile__("sync"); \ |
| __osl_v = brcmf_sdcard_reg_read(NULL, (unsigned long)(r),\ |
| sizeof(*(r))); \ |
| __asm__ __volatile__("sync"); \ |
| __osl_v; \ |
| }) |
| #endif /* __mips__ */ |
| |
| #define W_REG(r, v) do { \ |
| brcmf_sdcard_reg_write(NULL, (unsigned long)(r), sizeof(*(r)), \ |
| (v)); \ |
| } while (0) |
| #else /* __BIG_ENDIAN */ |
| #define R_REG(r) \ |
| brcmf_sdcard_reg_read(NULL, (unsigned long)(r), sizeof(*(r))) |
| #define W_REG(r, v) do { \ |
| brcmf_sdcard_reg_write(NULL, (unsigned long)(r), sizeof(*(r)), \ |
| (v)); \ |
| } while (0) |
| #endif /* __BIG_ENDIAN */ |
| |
| #define AND_REG(r, v) W_REG((r), R_REG(r) & (v)) |
| #define OR_REG(r, v) W_REG((r), R_REG(r) | (v)) |
| |
| #define SET_REG(r, mask, val) \ |
| W_REG((r), ((R_REG(r) & ~(mask)) | (val))) |
| |
| #ifdef DHD_DEBUG |
| |
| /* ARM trap handling */ |
| |
| /* Trap types defined by ARM (see arminc.h) */ |
| |
| /* Trap locations in lo memory */ |
| #define TRAP_STRIDE 4 |
| #define FIRST_TRAP TR_RST |
| #define LAST_TRAP (TR_FIQ * TRAP_STRIDE) |
| |
| #if defined(__ARM_ARCH_4T__) |
| #define MAX_TRAP_TYPE (TR_FIQ + 1) |
| #elif defined(__ARM_ARCH_7M__) |
| #define MAX_TRAP_TYPE (TR_ISR + ARMCM3_NUMINTS) |
| #endif /* __ARM_ARCH_7M__ */ |
| |
| /* The trap structure is defined here as offsets for assembly */ |
| #define TR_TYPE 0x00 |
| #define TR_EPC 0x04 |
| #define TR_CPSR 0x08 |
| #define TR_SPSR 0x0c |
| #define TR_REGS 0x10 |
| #define TR_REG(n) (TR_REGS + (n) * 4) |
| #define TR_SP TR_REG(13) |
| #define TR_LR TR_REG(14) |
| #define TR_PC TR_REG(15) |
| |
| #define TRAP_T_SIZE 80 |
| |
| typedef struct _trap_struct { |
| u32 type; |
| u32 epc; |
| u32 cpsr; |
| u32 spsr; |
| u32 r0; |
| u32 r1; |
| u32 r2; |
| u32 r3; |
| u32 r4; |
| u32 r5; |
| u32 r6; |
| u32 r7; |
| u32 r8; |
| u32 r9; |
| u32 r10; |
| u32 r11; |
| u32 r12; |
| u32 r13; |
| u32 r14; |
| u32 pc; |
| } trap_t; |
| |
| #define CBUF_LEN (128) |
| |
| #define LOG_BUF_LEN 1024 |
| |
| typedef struct { |
| u32 buf; /* Can't be pointer on (64-bit) hosts */ |
| uint buf_size; |
| uint idx; |
| char *_buf_compat; /* Redundant pointer for backward compat. */ |
| } rte_log_t; |
| |
| typedef struct { |
| /* Virtual UART |
| * When there is no UART (e.g. Quickturn), |
| * the host should write a complete |
| * input line directly into cbuf and then write |
| * the length into vcons_in. |
| * This may also be used when there is a real UART |
| * (at risk of conflicting with |
| * the real UART). vcons_out is currently unused. |
| */ |
| volatile uint vcons_in; |
| volatile uint vcons_out; |
| |
| /* Output (logging) buffer |
| * Console output is written to a ring buffer log_buf at index log_idx. |
| * The host may read the output when it sees log_idx advance. |
| * Output will be lost if the output wraps around faster than the host |
| * polls. |
| */ |
| rte_log_t log; |
| |
| /* Console input line buffer |
| * Characters are read one at a time into cbuf |
| * until <CR> is received, then |
| * the buffer is processed as a command line. |
| * Also used for virtual UART. |
| */ |
| uint cbuf_idx; |
| char cbuf[CBUF_LEN]; |
| } rte_cons_t; |
| |
| #endif /* DHD_DEBUG */ |
| #include <chipcommon.h> |
| |
| #include "sbsdio.h" |
| |
| #include "dngl_stats.h" |
| #include "dhd.h" |
| #include "dhd_bus.h" |
| #include "dhd_proto.h" |
| #include "dhd_dbg.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 |
| |
| /* |
| * Software allocation of To SB Mailbox resources |
| */ |
| |
| /* tosbmailbox bits corresponding to intstatus bits */ |
| #define SMB_NAK (1 << 0) /* Frame NAK */ |
| #define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */ |
| #define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */ |
| #define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */ |
| |
| /* tosbmailboxdata */ |
| #define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */ |
| |
| /* |
| * Software allocation of To Host Mailbox resources |
| */ |
| |
| /* intstatus bits */ |
| #define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */ |
| #define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */ |
| #define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */ |
| #define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */ |
| |
| /* tohostmailboxdata */ |
| #define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */ |
| #define HMB_DATA_DEVREADY 2 /* talk to host after enable */ |
| #define HMB_DATA_FC 4 /* per prio flowcontrol update flag */ |
| #define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */ |
| |
| #define HMB_DATA_FCDATA_MASK 0xff000000 |
| #define HMB_DATA_FCDATA_SHIFT 24 |
| |
| #define HMB_DATA_VERSION_MASK 0x00ff0000 |
| #define HMB_DATA_VERSION_SHIFT 16 |
| |
| /* |
| * Software-defined protocol header |
| */ |
| |
| /* Current protocol version */ |
| #define SDPCM_PROT_VERSION 4 |
| |
| /* SW frame header */ |
| #define SDPCM_PACKET_SEQUENCE(p) (((u8 *)p)[0] & 0xff) |
| |
| #define SDPCM_CHANNEL_MASK 0x00000f00 |
| #define SDPCM_CHANNEL_SHIFT 8 |
| #define SDPCM_PACKET_CHANNEL(p) (((u8 *)p)[1] & 0x0f) |
| |
| #define SDPCM_NEXTLEN_OFFSET 2 |
| |
| /* Data Offset from SOF (HW Tag, SW Tag, Pad) */ |
| #define SDPCM_DOFFSET_OFFSET 3 /* Data Offset */ |
| #define SDPCM_DOFFSET_VALUE(p) (((u8 *)p)[SDPCM_DOFFSET_OFFSET] & 0xff) |
| #define SDPCM_DOFFSET_MASK 0xff000000 |
| #define SDPCM_DOFFSET_SHIFT 24 |
| #define SDPCM_FCMASK_OFFSET 4 /* Flow control */ |
| #define SDPCM_FCMASK_VALUE(p) (((u8 *)p)[SDPCM_FCMASK_OFFSET] & 0xff) |
| #define SDPCM_WINDOW_OFFSET 5 /* Credit based fc */ |
| #define SDPCM_WINDOW_VALUE(p) (((u8 *)p)[SDPCM_WINDOW_OFFSET] & 0xff) |
| |
| #define SDPCM_SWHEADER_LEN 8 /* SW header is 64 bits */ |
| |
| /* logical channel numbers */ |
| #define SDPCM_CONTROL_CHANNEL 0 /* Control channel Id */ |
| #define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication Channel Id */ |
| #define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv Channel Id */ |
| #define SDPCM_GLOM_CHANNEL 3 /* For coalesced packets */ |
| #define SDPCM_TEST_CHANNEL 15 /* Reserved for test/debug packets */ |
| |
| #define SDPCM_SEQUENCE_WRAP 256 /* wrap-around val for 8bit frame seq */ |
| |
| #define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80) |
| |
| /* For TEST_CHANNEL packets, define another 4-byte header */ |
| #define SDPCM_TEST_HDRLEN 4 /* |
| * Generally: Cmd(1), Ext(1), Len(2); |
| * Semantics of Ext byte depend on |
| * command. Len is current or requested |
| * frame length, not including test |
| * header; sent little-endian. |
| */ |
| #define SDPCM_TEST_DISCARD 0x01 /* Receiver discards. Ext:pattern id. */ |
| #define SDPCM_TEST_ECHOREQ 0x02 /* Echo request. Ext:pattern id. */ |
| #define SDPCM_TEST_ECHORSP 0x03 /* Echo response. Ext:pattern id. */ |
| #define SDPCM_TEST_BURST 0x04 /* |
| * Receiver to send a burst. |
| * Ext is a frame count |
| */ |
| #define SDPCM_TEST_SEND 0x05 /* |
| * Receiver sets send mode. |
| * Ext is boolean on/off |
| */ |
| |
| /* Handy macro for filling in datagen packets with a pattern */ |
| #define SDPCM_TEST_FILL(byteno, id) ((u8)(id + byteno)) |
| |
| /* |
| * Shared structure between dongle and the host. |
| * The structure contains pointers to trap or assert information. |
| */ |
| #define SDPCM_SHARED_VERSION 0x0002 |
| #define SDPCM_SHARED_VERSION_MASK 0x00FF |
| #define SDPCM_SHARED_ASSERT_BUILT 0x0100 |
| #define SDPCM_SHARED_ASSERT 0x0200 |
| #define SDPCM_SHARED_TRAP 0x0400 |
| |
| |
| /* 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) |
| |
| /* sbimstate */ |
| #define SBIM_IBE 0x20000 /* inbanderror */ |
| #define SBIM_TO 0x40000 /* timeout */ |
| #define SBIM_BY 0x01800000 /* busy (sonics >= 2.3) */ |
| #define SBIM_RJ 0x02000000 /* reject (sonics >= 2.3) */ |
| |
| /* sbtmstatelow */ |
| #define SBTML_RESET 0x0001 /* reset */ |
| #define SBTML_REJ_MASK 0x0006 /* reject field */ |
| #define SBTML_REJ 0x0002 /* reject */ |
| #define SBTML_TMPREJ 0x0004 /* temporary reject, for error recovery */ |
| |
| #define SBTML_SICF_SHIFT 16 /* Shift to locate the SI control flags in sbtml */ |
| |
| /* sbtmstatehigh */ |
| #define SBTMH_SERR 0x0001 /* serror */ |
| #define SBTMH_INT 0x0002 /* interrupt */ |
| #define SBTMH_BUSY 0x0004 /* busy */ |
| #define SBTMH_TO 0x0020 /* timeout (sonics >= 2.3) */ |
| |
| #define SBTMH_SISF_SHIFT 16 /* Shift to locate the SI status flags in sbtmh */ |
| |
| /* sbidlow */ |
| #define SBIDL_INIT 0x80 /* initiator */ |
| |
| /* sbidhigh */ |
| #define SBIDH_RC_MASK 0x000f /* revision code */ |
| #define SBIDH_RCE_MASK 0x7000 /* revision code extension field */ |
| #define SBIDH_RCE_SHIFT 8 |
| #define SBCOREREV(sbidh) \ |
| ((((sbidh) & SBIDH_RCE_MASK) >> SBIDH_RCE_SHIFT) | ((sbidh) & SBIDH_RC_MASK)) |
| #define SBIDH_CC_MASK 0x8ff0 /* core code */ |
| #define SBIDH_CC_SHIFT 4 |
| #define SBIDH_VC_MASK 0xffff0000 /* vendor code */ |
| #define SBIDH_VC_SHIFT 16 |
| |
| /* |
| * 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); |
| |
| /* Core reg address translation */ |
| #define CORE_CC_REG(base, field) (base + offsetof(chipcregs_t, field)) |
| #define CORE_BUS_REG(base, field) \ |
| (base + offsetof(struct sdpcmd_regs, field)) |
| #define CORE_SB(base, field) \ |
| (base + SBCONFIGOFF + offsetof(sbconfig_t, field)) |
| |
| #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) */ |
| rte_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 */ |
| |
| struct sdpcm_shared { |
| u32 flags; |
| u32 trap_addr; |
| u32 assert_exp_addr; |
| u32 assert_file_addr; |
| u32 assert_line; |
| u32 console_addr; /* Address of rte_cons_t */ |
| u32 msgtrace_addr; |
| u8 tag[32]; |
| }; |
| |
| |
| /* 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) */ |
| |
| struct sdpcmd_regs *regs; /* 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 brcmf_sdio_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_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; |
| |
| spinlock_t txqlock; |
| } dhd_bus_t; |
| |
| typedef volatile struct _sbconfig { |
| u32 PAD[2]; |
| u32 sbipsflag; /* initiator port ocp slave flag */ |
| u32 PAD[3]; |
| u32 sbtpsflag; /* target port ocp slave flag */ |
| u32 PAD[11]; |
| u32 sbtmerrloga; /* (sonics >= 2.3) */ |
| u32 PAD; |
| u32 sbtmerrlog; /* (sonics >= 2.3) */ |
| u32 PAD[3]; |
| u32 sbadmatch3; /* address match3 */ |
| u32 PAD; |
| u32 sbadmatch2; /* address match2 */ |
| u32 PAD; |
| u32 sbadmatch1; /* address match1 */ |
| u32 PAD[7]; |
| u32 sbimstate; /* initiator agent state */ |
| u32 sbintvec; /* interrupt mask */ |
| u32 sbtmstatelow; /* target state */ |
| u32 sbtmstatehigh; /* target state */ |
| u32 sbbwa0; /* bandwidth allocation table0 */ |
| u32 PAD; |
| u32 sbimconfiglow; /* initiator configuration */ |
| u32 sbimconfighigh; /* initiator configuration */ |
| u32 sbadmatch0; /* address match0 */ |
| u32 PAD; |
| u32 sbtmconfiglow; /* target configuration */ |
| u32 sbtmconfighigh; /* target configuration */ |
| u32 sbbconfig; /* broadcast configuration */ |
| u32 PAD; |
| u32 sbbstate; /* broadcast state */ |
| u32 PAD[3]; |
| u32 sbactcnfg; /* activate configuration */ |
| u32 PAD[3]; |
| u32 sbflagst; /* current sbflags */ |
| u32 PAD[3]; |
| u32 sbidlow; /* identification */ |
| u32 sbidhigh; /* identification */ |
| } sbconfig_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; |
| |
| /* 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 brcmf_sdcard_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 (brcmf_sdcard_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 (brcmf_sdcard_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 brcmf_sdbrcm_checkdied(dhd_bus_t *bus, void *pkt, uint seq); |
| static void brcmf_sdbrcm_sdtest_set(dhd_bus_t *bus, bool start); |
| #endif |
| |
| #ifdef DHD_DEBUG |
| static int brcmf_sdbrcm_checkdied(dhd_bus_t *bus, u8 *data, uint size); |
| static int brcmf_sdbrcm_mem_dump(dhd_bus_t *bus); |
| #endif /* DHD_DEBUG */ |
| static int brcmf_sdbrcm_download_state(dhd_bus_t *bus, bool enter); |
| |
| static void brcmf_sdbrcm_release(dhd_bus_t *bus); |
| static void brcmf_sdbrcm_release_malloc(dhd_bus_t *bus); |
| static void brcmf_sdbrcm_disconnect(void *ptr); |
| static bool brcmf_sdbrcm_chipmatch(u16 chipid); |
| static bool brcmf_sdbrcm_probe_attach(dhd_bus_t *bus, void *sdh, |
| void *regsva, u16 devid); |
| static bool brcmf_sdbrcm_probe_malloc(dhd_bus_t *bus, void *sdh); |
| static bool brcmf_sdbrcm_probe_init(dhd_bus_t *bus, void *sdh); |
| static void brcmf_sdbrcm_release_dongle(dhd_bus_t *bus); |
| |
| static uint brcmf_process_nvram_vars(char *varbuf, uint len); |
| |
| static void brcmf_sdbrcm_setmemsize(struct dhd_bus *bus, int mem_size); |
| static int brcmf_sdbrcm_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 brcmf_sdbrcm_download_firmware(struct dhd_bus *bus, void *sdh); |
| static int _brcmf_sdbrcm_download_firmware(struct dhd_bus *bus); |
| |
| static int |
| brcmf_sdbrcm_download_code_file(struct dhd_bus *bus, char *image_path); |
| static int brcmf_sdbrcm_download_nvram(struct dhd_bus *bus); |
| static void brcmf_sdbrcm_chip_disablecore(bcmsdh_info_t *sdh, u32 corebase); |
| static int brcmf_sdbrcm_chip_attach(struct dhd_bus *bus, void *regs); |
| static void brcmf_sdbrcm_chip_resetcore(bcmsdh_info_t *sdh, u32 corebase); |
| static void brcmf_sdbrcm_sdiod_drive_strength_init(struct dhd_bus *bus, |
| u32 drivestrength); |
| static void brcmf_sdbrcm_chip_detach(struct dhd_bus *bus); |
| |
| /* Packet free applicable unconditionally for sdio and sdspi. |
| * Conditional if bufpool was present for gspi bus. |
| */ |
| static void brcmf_sdbrcm_pktfree2(dhd_bus_t *bus, struct sk_buff *pkt) |
| { |
| if ((bus->bus != SPI_BUS) || bus->usebufpool) |
| brcmu_pkt_buf_free_skb(pkt); |
| } |
| |
| static void brcmf_sdbrcm_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 brcmf_sdbrcm_set_siaddr_window(dhd_bus_t *bus, u32 address) |
| { |
| int err = 0; |
| brcmf_sdcard_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW, |
| (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err); |
| if (!err) |
| brcmf_sdcard_cfg_write(bus->sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_SBADDRMID, |
| (address >> 16) & SBSDIO_SBADDRMID_MASK, &err); |
| if (!err) |
| brcmf_sdcard_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 brcmf_sdbrcm_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; |
| |
| brcmf_sdcard_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 = brcmf_sdcard_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 = brcmf_sdcard_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; |
| brcmf_sdcard_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 = |
| brcmf_sdcard_cfg_read(sdh, SDIO_FUNC_1, |
| SBSDIO_DEVICE_CTL, &err); |
| devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
| brcmf_sdcard_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 = |
| brcmf_sdcard_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 = brcmf_sdcard_cfg_read(sdh, SDIO_FUNC_1, |
| SBSDIO_DEVICE_CTL, &err); |
| devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; |
| brcmf_sdcard_cfg_write(sdh, SDIO_FUNC_1, |
| SBSDIO_DEVICE_CTL, devctl, &err); |
| } |
| |
| bus->clkstate = CLK_SDONLY; |
| brcmf_sdcard_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 brcmf_sdbrcm_sdclk(dhd_bus_t *bus, bool on) |
| { |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| if (on) |
| bus->clkstate = CLK_SDONLY; |
| else |
| bus->clkstate = CLK_NONE; |
| |
| return 0; |
| } |
| |
| /* Transition SD and backplane clock readiness */ |
| static int brcmf_sdbrcm_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) |
| brcmf_sdbrcm_sdclk(bus, true); |
| /* Now request HT Avail on the backplane */ |
| brcmf_sdbrcm_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) |
| brcmf_sdbrcm_sdclk(bus, true); |
| else if (bus->clkstate == CLK_AVAIL) |
| brcmf_sdbrcm_htclk(bus, false, false); |
| else |
| DHD_ERROR(("brcmf_sdbrcm_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) |
| brcmf_sdbrcm_htclk(bus, false, false); |
| /* Now remove the SD clock */ |
| brcmf_sdbrcm_sdclk(bus, false); |
| dhd_os_wd_timer(bus->dhd, 0); |
| break; |
| } |
| #ifdef DHD_DEBUG |
| DHD_INFO(("brcmf_sdbrcm_clkctl: %d -> %d\n", oldstate, bus->clkstate)); |
| #endif /* DHD_DEBUG */ |
| |
| return 0; |
| } |
| |
| int brcmf_sdbrcm_bussleep(dhd_bus_t *bus, bool sleep) |
| { |
| bcmsdh_info_t *sdh = bus->sdh; |
| struct sdpcmd_regs *regs = bus->regs; |
| uint retries = 0; |
| |
| DHD_INFO(("brcmf_sdbrcm_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) */ |
| brcmf_sdcard_intr_disable(bus->sdh); |
| |
| /* Make sure the controller has the bus up */ |
| brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); |
| |
| brcmf_sdcard_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) { |
| brcmf_sdcard_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 */ |
| |
| brcmf_sdcard_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)) |
| brcmf_sdcard_cfg_write(sdh, SDIO_FUNC_1, |
| SBSDIO_DEVICE_CTL, 0, NULL); |
| |
| /* Make sure the controller has the bus up */ |
| brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_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; |
| brcmf_sdcard_intr_enable(bus->sdh); |
| } |
| } |
| |
| return 0; |
| } |
| |
| #if defined(OOB_INTR_ONLY) |
| void brcmf_sdbrcm_enable_oob_intr(struct dhd_bus *bus, bool enable) |
| { |
| #if defined(HW_OOB) |
| brcmf_sdcard_enable_hw_oob_intr(bus->sdh, enable); |
| #else |
| sdpcmd_regs_t *regs = bus->regs; |
| uint retries = 0; |
| |
| brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); |
| #endif /* !defined(HW_OOB) */ |
| } |
| #endif /* defined(OOB_INTR_ONLY) */ |
| |
| #define BUS_WAKE(bus) \ |
| do { \ |
| if ((bus)->sleeping) \ |
| brcmf_sdbrcm_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 brcmf_sdbrcm_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 = brcmu_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) |
| brcmu_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 = brcmf_sdbrcm_send_buf(bus, brcmf_sdcard_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++; |
| |
| brcmf_sdcard_abort(sdh, SDIO_FUNC_2); |
| brcmf_sdcard_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 = brcmf_sdcard_cfg_read(sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_WFRAMEBCHI, |
| NULL); |
| lo = brcmf_sdcard_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) |
| brcmu_pkt_buf_free_skb(pkt); |
| |
| return ret; |
| } |
| |
| int brcmf_sdbrcm_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 */ |
| spin_lock_bh(&bus->txqlock); |
| if (brcmf_c_prec_enq(bus->dhd, &bus->txq, pkt, prec) == false) { |
| skb_pull(pkt, SDPCM_HDRLEN); |
| dhd_txcomplete(bus->dhd, pkt, false); |
| brcmu_pkt_buf_free_skb(pkt); |
| DHD_ERROR(("%s: out of bus->txq !!!\n", __func__)); |
| ret = -ENOSR; |
| } else { |
| ret = 0; |
| } |
| spin_unlock_bh(&bus->txqlock); |
| |
| 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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, true); |
| |
| #ifndef SDTEST |
| DHD_TRACE(("%s: calling txpkt\n", __func__)); |
| ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); |
| #else |
| ret = brcmf_sdbrcm_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; |
| brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); |
| } |
| |
| dhd_os_sdunlock(bus->dhd); |
| } |
| |
| return ret; |
| } |
| |
| static uint brcmf_sdbrcm_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; |
| struct sdpcmd_regs *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++) { |
| spin_lock_bh(&bus->txqlock); |
| pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map, &prec_out); |
| if (pkt == NULL) { |
| spin_unlock_bh(&bus->txqlock); |
| break; |
| } |
| spin_unlock_bh(&bus->txqlock); |
| datalen = pkt->len - SDPCM_HDRLEN; |
| |
| #ifndef SDTEST |
| ret = brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_DATA_CHANNEL, true); |
| #else |
| ret = brcmf_sdbrcm_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 (brcmf_sdcard_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 |
| brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_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 = brcmf_sdbrcm_send_buf(bus, |
| brcmf_sdcard_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++; |
| |
| brcmf_sdcard_abort(sdh, SDIO_FUNC_2); |
| |
| brcmf_sdcard_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 = brcmf_sdcard_cfg_read(sdh, |
| SDIO_FUNC_1, |
| SBSDIO_FUNC1_WFRAMEBCHI, |
| NULL); |
| lo = brcmf_sdcard_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; |
| brcmf_sdbrcm_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 brcmf_sdbrcm_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); |
| brcmf_sdbrcm_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); |
| brcmf_sdbrcm_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 struct brcmu_iovar 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 brcmu_strbuf *strbuf, char *desc, uint num, uint div) |
| { |
| uint q1, q2; |
| |
| if (!div) { |
| brcmu_bprintf(strbuf, "%s N/A", desc); |
| } else { |
| q1 = num / div; |
| q2 = (100 * (num - (q1 * div))) / div; |
| brcmu_bprintf(strbuf, "%s %d.%02d", desc, q1, q2); |
| } |
| } |
| |
| void brcmf_sdbrcm_bus_dump(dhd_pub_t *dhdp, struct brcmu_strbuf *strbuf) |
| { |
| dhd_bus_t *bus = dhdp->bus; |
| |
| brcmu_bprintf(strbuf, "Bus SDIO structure:\n"); |
| brcmu_bprintf(strbuf, |
| "hostintmask 0x%08x intstatus 0x%08x sdpcm_ver %d\n", |
| bus->hostintmask, bus->intstatus, bus->sdpcm_ver); |
| brcmu_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); |
| brcmu_bprintf(strbuf, "intr %d intrcount %d lastintrs %d spurious %d\n", |
| bus->intr, bus->intrcount, bus->lastintrs, bus->spurious); |
| brcmu_bprintf(strbuf, "pollrate %d pollcnt %d regfails %d\n", |
| bus->pollrate, bus->pollcnt, bus->regfails); |
| |
| brcmu_bprintf(strbuf, "\nAdditional counters:\n"); |
| brcmu_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); |
| brcmu_bprintf(strbuf, "rx_hdrfail %d badhdr %d badseq %d\n", |
| bus->rx_hdrfail, bus->rx_badhdr, bus->rx_badseq); |
| brcmu_bprintf(strbuf, "fc_rcvd %d, fc_xoff %d, fc_xon %d\n", |
| bus->fc_rcvd, bus->fc_xoff, bus->fc_xon); |
| brcmu_bprintf(strbuf, "rxglomfail %d, rxglomframes %d, rxglompkts %d\n", |
| bus->rxglomfail, bus->rxglomframes, bus->rxglompkts); |
| brcmu_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); |
| brcmu_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); |
| brcmu_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); |
| brcmu_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); |
| brcmu_bprintf(strbuf, "\n\n"); |
| } |
| |
| #ifdef SDTEST |
| if (bus->pktgen_count) { |
| brcmu_bprintf(strbuf, "pktgen config and count:\n"); |
| brcmu_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); |
| brcmu_bprintf(strbuf, "send attempts %d rcvd %d fail %d\n", |
| bus->pktgen_sent, bus->pktgen_rcvd, |
| bus->pktgen_fail); |
| } |
| #endif /* SDTEST */ |
| #ifdef DHD_DEBUG |
| brcmu_bprintf(strbuf, "dpc_sched %d host interrupt%spending\n", |
| bus->dpc_sched, |
| (brcmf_sdcard_intr_pending(bus->sdh) ? " " : " not ")); |
| brcmu_bprintf(strbuf, "blocksize %d roundup %d\n", bus->blocksize, |
| bus->roundup); |
| #endif /* DHD_DEBUG */ |
| brcmu_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 brcmf_sdbrcm_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 brcmf_sdbrcm_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 |
| brcmf_sdbrcm_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 = brcmf_sdbrcm_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 = |
| brcmf_sdcard_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 = brcmf_sdbrcm_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 (brcmf_sdbrcm_set_siaddr_window(bus, |
| brcmf_sdcard_cur_sbwad(bus->sdh))) { |
| DHD_ERROR(("%s: FAILED to set window back to 0x%x\n", |
| __func__, brcmf_sdcard_cur_sbwad(bus->sdh))); |
| } |
| |
| return bcmerror; |
| } |
| |
| #ifdef DHD_DEBUG |
| static int brcmf_sdbrcm_readshared(dhd_bus_t *bus, struct sdpcm_shared *sh) |
| { |
| u32 addr; |
| int rv; |
| |
| /* Read last word in memory to determine address of |
| sdpcm_shared structure */ |
| rv = brcmf_sdbrcm_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 rte_shared structure */ |
| rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *) sh, |
| sizeof(struct sdpcm_shared)); |
| 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 brcmf_sdbrcm_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; |
| struct sdpcm_shared sdpcm_shared; |
| struct brcmu_strbuf 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 = brcmf_sdbrcm_readshared(bus, &sdpcm_shared); |
| if (bcmerror < 0) |
| goto done; |
| |
| brcmu_binit(&strbuf, data, size); |
| |
| brcmu_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.) |
| */ |
| brcmu_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.) |
| */ |
| brcmu_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 */ |
| brcmu_bprintf(&strbuf, "Dongle assert"); |
| if (sdpcm_shared.assert_exp_addr != 0) { |
| str[0] = '\0'; |
| bcmerror = brcmf_sdbrcm_membytes(bus, false, |
| sdpcm_shared.assert_exp_addr, |
| (u8 *) str, maxstrlen); |
| if (bcmerror < 0) |
| goto done; |
| |
| str[maxstrlen - 1] = '\0'; |
| brcmu_bprintf(&strbuf, " expr \"%s\"", str); |
| } |
| |
| if (sdpcm_shared.assert_file_addr != 0) { |
| str[0] = '\0'; |
| bcmerror = brcmf_sdbrcm_membytes(bus, false, |
| sdpcm_shared.assert_file_addr, |
| (u8 *) str, maxstrlen); |
| if (bcmerror < 0) |
| goto done; |
| |
| str[maxstrlen - 1] = '\0'; |
| brcmu_bprintf(&strbuf, " file \"%s\"", str); |
| } |
| |
| brcmu_bprintf(&strbuf, " line %d ", |
| sdpcm_shared.assert_line); |
| } |
| |
| if (sdpcm_shared.flags & SDPCM_SHARED_TRAP) { |
| bcmerror = brcmf_sdbrcm_membytes(bus, false, |
| sdpcm_shared.trap_addr, (u8 *)&tr, |
| sizeof(trap_t)); |
| if (bcmerror < 0) |
| goto done; |
| |
| brcmu_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 */ |
| brcmf_sdbrcm_mem_dump(bus); |
| } |
| #endif /* DHD_DEBUG */ |
| |
| done: |
| kfree(mbuffer); |
| kfree(str); |
| |
| return bcmerror; |
| } |
| |
| static int brcmf_sdbrcm_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 = brcmf_sdbrcm_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 brcmf_sdbrcm_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(rte_cons_t, log); |
| rv = brcmf_sdbrcm_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 = brcmf_sdbrcm_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 brcmf_sdbrcm_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 |
| brcmf_sdbrcm_doiovar(dhd_bus_t *bus, const struct brcmu_iovar *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 = brcmu_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 = brcmf_sdbrcm_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); |
| brcmf_sdbrcm_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__)); |
| brcmf_sdcard_intr_enable(bus->sdh); |
| } else { |
| DHD_INTR(("%s: disable SDIO interrupts\n", |
| __func__)); |
| brcmf_sdcard_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 = brcmf_sdbrcm_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; |
| brcmf_sdbrcm_sdiod_drive_strength_init(bus, |
| dhd_sdiod_drive_strength); |
| break; |
| |
| case IOV_SVAL(IOV_DOWNLOAD): |
| bcmerror = brcmf_sdbrcm_download_state(bus, bool_val); |
| break; |
| |
| case IOV_SVAL(IOV_VARS): |
| bcmerror = brcmf_sdbrcm_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) brcmf_sdcard_reg_read(bus->sdh, addr, |
| size); |
| if (brcmf_sdcard_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; |
| brcmf_sdcard_reg_write(bus->sdh, addr, size, |
| sd_ptr->value); |
| if (brcmf_sdcard_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) brcmf_sdcard_reg_read(bus->sdh, addr, |
| size); |
| if (brcmf_sdcard_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; |
| brcmf_sdcard_reg_write(bus->sdh, addr, size, |
| sdreg.value); |
| if (brcmf_sdcard_regfail(bus->sdh)) |
| bcmerror = -EIO; |
| break; |
| } |
| |
| case IOV_GVAL(IOV_SDCIS): |
| { |
| *(char *)arg = 0; |
| |
| strcat(arg, "\nFunc 0\n"); |
| brcmf_sdcard_cis_read(bus->sdh, 0x10, |
| (u8 *) arg + strlen(arg), |
| SBSDIO_CIS_SIZE_LIMIT); |
| strcat(arg, "\nFunc 1\n"); |
| brcmf_sdcard_cis_read(bus->sdh, 0x11, |
| (u8 *) arg + strlen(arg), |
| SBSDIO_CIS_SIZE_LIMIT); |
| strcat(arg, "\nFunc 2\n"); |
| brcmf_sdcard_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 = brcmf_sdbrcm_pktgen_get(bus, arg); |
| break; |
| |
| case IOV_SVAL(IOV_PKTGEN): |
| bcmerror = brcmf_sdbrcm_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; |
| brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); |
| } |
| |
| dhd_os_sdunlock(bus->dhd); |
| |
| if (actionid == IOV_SVAL(IOV_DEVRESET) && bool_val == false) |
| brcmf_c_preinit_ioctls((dhd_pub_t *) bus->dhd); |
| |
| return bcmerror; |
| } |
| |
| static int brcmf_sdbrcm_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 = |
| brcmf_sdbrcm_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 = |
| brcmf_sdbrcm_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 = brcmf_sdbrcm_membytes(bus, true, (bus->orig_ramsize - 4), |
| (u8 *)&varsizew, 4); |
| |
| return bcmerror; |
| } |
| |
| static int brcmf_sdbrcm_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; |
| |
| brcmf_sdbrcm_chip_disablecore(bus->sdh, bus->ci->armcorebase); |
| |
| brcmf_sdbrcm_chip_resetcore(bus->sdh, bus->ci->ramcorebase); |
| |
| /* Clear the top bit of memory */ |
| if (bus->ramsize) { |
| u32 zeros = 0; |
| brcmf_sdbrcm_membytes(bus, true, bus->ramsize - 4, |
| (u8 *)&zeros, 4); |
| } |
| } else { |
| regdata = brcmf_sdcard_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 = brcmf_sdbrcm_write_vars(bus); |
| if (bcmerror) { |
| DHD_ERROR(("%s: no vars written to RAM\n", __func__)); |
| bcmerror = 0; |
| } |
| |
| W_SDREG(0xFFFFFFFF, &bus->regs->intstatus, retries); |
| |
| brcmf_sdbrcm_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 |
| brcmf_sdbrcm_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 struct brcmu_iovar *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 = brcmu_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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
| |
| bcmerror = brcmf_sdcard_iovar_op(bus->sdh, name, params, plen, |
| arg, len, set); |
| |
| /* Similar check for blocksize change */ |
| if (set && strcmp(name, "sd_blocksize") == 0) { |
| s32 fnum = 2; |
| if (brcmf_sdcard_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; |
| brcmf_sdbrcm_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 = brcmf_sdbrcm_doiovar(bus, vi, actionid, name, params, plen, |
| arg, len, val_size); |
| |
| exit: |
| return bcmerror; |
| } |
| |
| void brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_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 = brcmf_sdcard_cfg_read(bus->sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_CHIPCLKCSR, &err); |
| if (!err) { |
| brcmf_sdcard_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__)); |
| brcmf_sdcard_intr_disable(bus->sdh); |
| brcmf_sdcard_cfg_write(bus->sdh, SDIO_FUNC_0, SDIO_CCCR_IOEx, |
| 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) */ |
| brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); |
| |
| /* Clear the data packet queues */ |
| brcmu_pktq_flush(&bus->txq, true, NULL, NULL); |
| |
| /* Clear any held glomming stuff */ |
| if (bus->glomd) |
| brcmu_pkt_buf_free_skb(bus->glomd); |
| |
| if (bus->glom) |
| brcmu_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 brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
| if (bus->clkstate != CLK_AVAIL) |
| goto exit; |
| |
| /* Force clocks on backplane to be sure F2 interrupt propagates */ |
| saveclk = |
| brcmf_sdcard_cfg_read(bus->sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_CHIPCLKCSR, &err); |
| if (!err) { |
| brcmf_sdcard_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); |
| |
| brcmf_sdcard_cfg_write(bus->sdh, SDIO_FUNC_0, SDIO_CCCR_IOEx, 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 = |
| brcmf_sdcard_cfg_read(bus->sdh, SDIO_FUNC_0, SDIO_CCCR_IORx, |
| 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); |
| |
| brcmf_sdcard_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__)); |
| brcmf_sdcard_intr_enable(bus->sdh); |
| } else { |
| DHD_INTR(("%s: disable SDIO interrupts\n", __func__)); |
| brcmf_sdcard_intr_disable(bus->sdh); |
| } |
| |
| } |
| |
| else { |
| /* Disable F2 again */ |
| enable = SDIO_FUNC_ENABLE_1; |
| brcmf_sdcard_cfg_write(bus->sdh, SDIO_FUNC_0, SDIO_CCCR_IOEx, |
| enable, NULL); |
| } |
| |
| /* Restore previous clock setting */ |
| brcmf_sdcard_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) |
| brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); |
| |
| exit: |
| if (enforce_mutex) |
| dhd_os_sdunlock(bus->dhd); |
| |
| return ret; |
| } |
| |
| static void brcmf_sdbrcm_rxfail(dhd_bus_t *bus, bool abort, bool rtx) |
| { |
| bcmsdh_info_t *sdh = bus->sdh; |
| struct sdpcmd_regs *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) |
| brcmf_sdcard_abort(sdh, SDIO_FUNC_2); |
| |
| brcmf_sdcard_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 = brcmf_sdcard_cfg_read(sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_RFRAMEBCHI, NULL); |
| lo = brcmf_sdcard_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 || brcmf_sdcard_regfail(sdh)) |
| bus->dhd->busstate = DHD_BUS_DOWN; |
| } |
| |
| static void |
| brcmf_sdbrcm_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++; |
| brcmf_sdbrcm_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++; |
| brcmf_sdbrcm_rxfail(bus, false, false); |
| goto done; |
| } |
| |
| /* Read remainder of frame body into the rxctl buffer */ |
| sdret = brcmf_sdcard_recv_buf(sdh, brcmf_sdcard_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 */ |
| brcmf_sdbrcm_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 brcmf_sdbrcm_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(("brcmf_sdbrcm_rxglom: start: glomd %p glom %p\n", bus->glomd, |
| bus->glom)); |
| |
| /* If there's a descriptor, generate the packet chain */ |
| if (bus->glomd) { |
| 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 = brcmu_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) |
| brcmu_pkt_buf_free_skb(pfirst); |
| bus->glom = NULL; |
| num = 0; |
| } |
| |
| /* Done with descriptor packet */ |
| brcmu_pkt_buf_free_skb(bus->glomd); |
| bus->glomd = NULL; |
| bus->nextlen = 0; |
| } |
| |
| /* 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) brcmu_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 = brcmf_sdcard_recv_buf(bus->sdh, |
| brcmf_sdcard_cur_sbwad(bus->sdh), |
| SDIO_FUNC_2, |
| F2SYNC, (u8 *) pfirst->data, dlen, |
| pfirst, NULL, NULL); |
| } else if (bus->dataptr) { |
| errcode = brcmf_sdcard_recv_buf(bus->sdh, |
| brcmf_sdcard_cur_sbwad(bus->sdh), |
| SDIO_FUNC_2, |
| F2SYNC, bus->dataptr, dlen, |
| NULL, NULL, NULL); |
| sublen = (u16) brcmu_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) { |
| brcmf_sdbrcm_rxfail(bus, true, true); |
| } else { |
| bus->glomerr = 0; |
| brcmf_sdbrcm_rxfail(bus, true, false); |
| brcmu_pkt_buf_free_skb(bus->glom); |
| 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); |
| brcmf_sdbrcm_rxfail(bus, true, true); |
| } else { |
| bus->glomerr = 0; |
| brcmf_sdbrcm_rxfail(bus, true, false); |
| brcmu_pkt_buf_free_skb(bus->glom); |
| 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; |
| |
| 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) { |
| brcmu_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++; |
| brcmu_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 */ |
| } |
| 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 |
| brcmf_sdbrcm_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 = brcmf_sdbrcm_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 */ |
| pkt = brcmu_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 = brcmf_sdcard_recv_buf(sdh, |
| brcmf_sdcard_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++; |
| brcmf_sdbrcm_rxfail(bus, true, |
| (bus->bus == |
| SPI_BUS) ? false |
| : true); |
| continue; |
| } |
| } else { |
| /* Give up on data, |
| request rtx of events */ |
| DHD_ERROR(("%s (nextlen): " |
| "brcmu_pkt_buf_get_skb " |
| "failed:" |
| " len %d rdlen %d expected" |
| " rxseq %d\n", __func__, |
| len, rdlen, rxseq)); |
| 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 = brcmf_sdcard_recv_buf(sdh, |
| brcmf_sdcard_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)); |
| brcmu_pkt_buf_free_skb(pkt); |
| bus->dhd->rx_errors++; |
| /* Force retry w/normal header read. |
| * Don't attempt NAK for |
| * gSPI |
| */ |
| brcmf_sdbrcm_rxfail(bus, true, |
| (bus->bus == |
| SPI_BUS) ? false : |
| true); |
| continue; |
| } |
| } |
| |
| /* 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__)); |
| brcmf_sdbrcm_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++; |
| brcmf_sdbrcm_rxfail(bus, false, false); |
| brcmf_sdbrcm_pktfree2(bus, pkt); |
| continue; |
| } |
| |
| /* Validate frame length */ |
| if (len < SDPCM_HDRLEN) { |
| DHD_ERROR(("%s (nextlen): HW hdr length " |
| "invalid: %d\n", __func__, len)); |
| brcmf_sdbrcm_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)); |
| brcmf_sdbrcm_rxfail(bus, true, |
| bus->bus != SPI_BUS); |
| brcmf_sdbrcm_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) { |
| brcmf_sdbrcm_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; |
| brcmf_sdbrcm_rxfail(bus, false, true); |
| } |
| brcmf_sdbrcm_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)); |
| brcmf_sdbrcm_rxfail(bus, false, false); |
| brcmf_sdbrcm_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 = brcmf_sdcard_recv_buf(sdh, brcmf_sdcard_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++; |
| brcmf_sdbrcm_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++; |
| brcmf_sdbrcm_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); |
| brcmf_sdbrcm_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) { |
| brcmf_sdbrcm_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++; |
| brcmf_sdbrcm_rxfail(bus, false, false); |
| continue; |
| } |
| |
| pkt = brcmu_pkt_buf_get_skb(rdlen + firstread + DHD_SDALIGN); |
| if (!pkt) { |
| /* Give up on data, request rtx of events */ |
| DHD_ERROR(("%s: brcmu_pkt_buf_get_skb failed: rdlen %d" |
| " chan %d\n", __func__, rdlen, chan)); |
| bus->dhd->rx_dropped++; |
| brcmf_sdbrcm_rxfail(bus, false, RETRYCHAN(chan)); |
| continue; |
| } |
| |
| 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 = brcmf_sdcard_recv_buf(sdh, brcmf_sdcard_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)); |
| brcmu_pkt_buf_free_skb(pkt); |
| bus->dhd->rx_errors++; |
| brcmf_sdbrcm_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__)); |
| brcmf_sdbrcm_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) { |
| brcmf_sdbrcm_checkdied(bus, pkt, seq); |
| continue; |
| } |
| #endif /* SDTEST */ |
| |
| if (pkt->len == 0) { |
| brcmu_pkt_buf_free_skb(pkt); |
| continue; |
| } else if (dhd_prot_hdrpull(bus->dhd, &ifidx, pkt) != 0) { |
| DHD_ERROR(("%s: rx protocol error\n", __func__)); |
| brcmu_pkt_buf_free_skb(pkt); |
| 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 brcmf_sdbrcm_hostmail(dhd_bus_t *bus) |
| { |
| struct sdpcmd_regs *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 brcmf_sdbrcm_dpc(dhd_bus_t *bus) |
| { |
| bcmsdh_info_t *sdh = bus->sdh; |
| struct sdpcmd_regs *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 = brcmf_sdcard_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 = brcmf_sdcard_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 = brcmf_sdcard_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; |
| brcmf_sdcard_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 */ |
| brcmf_sdbrcm_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 (brcmf_sdcard_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 |= brcmf_sdbrcm_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 = brcmf_sdbrcm_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) |
| brcmf_sdio_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 && !brcmf_sdcard_regfail(sdh)) { |
| DHD_INTR(("%s: enable SDIO interrupts, rxdone %d framecnt %d\n", |
| __func__, rxdone, framecnt)); |
| bus->intdis = false; |
| brcmf_sdcard_intr_enable(sdh); |
| } |
| |
| if (DATAOK(bus) && bus->ctrl_frame_stat && |
| (bus->clkstate == CLK_AVAIL)) { |
| int ret, i; |
| |
| ret = brcmf_sdbrcm_send_buf(bus, brcmf_sdcard_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++; |
| |
| brcmf_sdcard_abort(sdh, SDIO_FUNC_2); |
| |
| brcmf_sdcard_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 = brcmf_sdcard_cfg_read(sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_WFRAMEBCHI, |
| NULL); |
| lo = brcmf_sdcard_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 && |
| brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit |
| && DATAOK(bus)) { |
| framecnt = rxdone ? txlimit : min(txlimit, dhd_txminmax); |
| framecnt = brcmf_sdbrcm_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) || brcmf_sdcard_regfail(sdh)) { |
| DHD_ERROR(("%s: failed backplane access over SDIO, halting " |
| "operation %d\n", __func__, brcmf_sdcard_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 && brcmu_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; |
| brcmf_sdbrcm_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 brcmf_sdbrcm_dpc() from %s\n", __func__)); |
| resched = brcmf_sdbrcm_dpc(bus); |
| |
| return resched; |
| } |
| |
| void brcmf_sdbrcm_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(("brcmf_sdbrcm_isr() w/o interrupt configured!\n")); |
| |
| brcmf_sdcard_intr_disable(sdh); |
| bus->intdis = true; |
| |
| #if defined(SDIO_ISR_THREAD) |
| DHD_TRACE(("Calling brcmf_sdbrcm_dpc() from %s\n", __func__)); |
| while (brcmf_sdbrcm_dpc(bus)) |
| ; |
| #else |
| bus->dpc_sched = true; |
| dhd_sched_dpc(bus->dhd); |
| #endif |
| |
| } |
| |
| #ifdef SDTEST |
| static void brcmf_sdbrcm_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 brcmf_sdbrcm_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) |
| brcmf_sdbrcm_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 = brcmu_pkt_buf_get_skb( |
| (len + SDPCM_HDRLEN + SDPCM_TEST_HDRLEN + DHD_SDALIGN), |
| true); |
| if (!pkt) { |
| DHD_ERROR(("%s: brcmu_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)); |
| brcmu_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 "brcmf_sdbrcm_pktgen: Tx Data:\n"); |
| print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, data, |
| pkt->len - SDPCM_HDRLEN); |
| } |
| #endif |
| |
| /* Send it */ |
| if (brcmf_sdbrcm_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 brcmf_sdbrcm_sdtest_set(dhd_bus_t *bus, bool start) |
| { |
| struct sk_buff *pkt; |
| u8 *data; |
| |
| /* Allocate the packet */ |
| pkt = brcmu_pkt_buf_get_skb(SDPCM_HDRLEN + SDPCM_TEST_HDRLEN + |
| DHD_SDALIGN, true); |
| if (!pkt) { |
| DHD_ERROR(("%s: brcmu_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 (brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_TEST_CHANNEL, true)) |
| bus->pktgen_fail++; |
| } |
| |
| static void |
| brcmf_sdbrcm_checkdied(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(("brcmf_sdbrcm_checkdied: toss runt frame, pktlen " |
| "%d\n", pktlen)); |
| brcmu_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(("brcmf_sdbrcm_checkdied: frame length " |
| "mismatch, pktlen %d seq %d" " cmd %d extra %d " |
| "len %d\n", |
| pktlen, seq, cmd, extra, len)); |
| brcmu_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 (brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_TEST_CHANNEL, true) == 0) |
| bus->pktgen_sent++; |
| else { |
| bus->pktgen_fail++; |
| brcmu_pkt_buf_free_skb(pkt, false); |
| } |
| bus->pktgen_rcvd++; |
| break; |
| |
| case SDPCM_TEST_ECHORSP: |
| if (bus->ext_loop) { |
| brcmu_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(("brcmf_sdbrcm_checkdied: echo data " |
| "mismatch: " "offset %d (len %d) " |
| "expect 0x%02x rcvd 0x%02x\n", |
| offset, len, |
| SDPCM_TEST_FILL(offset, extra), |
| *data)); |
| break; |
| } |
| } |
| brcmu_pkt_buf_free_skb(pkt, false); |
| bus->pktgen_rcvd++; |
| break; |
| |
| case SDPCM_TEST_DISCARD: |
| brcmu_pkt_buf_free_skb(pkt, false); |
| bus->pktgen_rcvd++; |
| break; |
| |
| case SDPCM_TEST_BURST: |
| case SDPCM_TEST_SEND: |
| default: |
| DHD_INFO(("brcmf_sdbrcm_checkdied: unsupported or unknown " |
| "command, pktlen %d seq %d" " cmd %d extra %d len %d\n", |
| pktlen, seq, cmd, extra, len)); |
| brcmu_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; |
| brcmf_sdbrcm_sdtest_set(bus, false); |
| } |
| } |
| } |
| #endif /* SDTEST */ |
| |
| extern bool brcmf_sdbrcm_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 = brcmf_sdcard_cfg_read(bus->sdh, |
| SDIO_FUNC_0, SDIO_CCCR_INTx, |
| 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) |
| brcmf_sdcard_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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
| if (brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
| bus->pktgen_tick = 0; |
| brcmf_sdbrcm_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 { |
| brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); |
| } |
| } |
| } |
| |
| dhd_os_sdunlock(bus->dhd); |
| |
| return bus->ipend; |
| } |
| |
| #ifdef DHD_DEBUG |
| extern int brcmf_sdbrcm_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 */ |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
| |
| /* Zero cbuf_index */ |
| addr = bus->console_addr + offsetof(rte_cons_t, cbuf_idx); |
| val = cpu_to_le32(0); |
| rv = brcmf_sdbrcm_membytes(bus, true, addr, (u8 *)&val, sizeof(val)); |
| if (rv < 0) |
| goto done; |
| |
| /* Write message into cbuf */ |
| addr = bus->console_addr + offsetof(rte_cons_t, cbuf); |
| rv = brcmf_sdbrcm_membytes(bus, true, addr, (u8 *)msg, msglen); |
| if (rv < 0) |
| goto done; |
| |
| /* Write length into vcons_in */ |
| addr = bus->console_addr + offsetof(rte_cons_t, vcons_in); |
| val = cpu_to_le32(msglen); |
| rv = brcmf_sdbrcm_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 = brcmu_pkt_buf_get_skb(4 + SDPCM_RESERVE); |
| if ((pkt != NULL) && bus->clkstate == CLK_AVAIL) |
| brcmf_sdbrcm_txpkt(bus, pkt, SDPCM_EVENT_CHANNEL, true); |
| |
| done: |
| if ((bus->idletime == DHD_IDLE_IMMEDIATE) && !bus->dpc_sched) { |
| bus->activity = false; |
| brcmf_sdbrcm_clkctl(bus, CLK_NONE, true); |
| } |
| |
| dhd_os_sdunlock(bus->dhd); |
| |
| return rv; |
| } |
| #endif /* DHD_DEBUG */ |
| |
| static bool brcmf_sdbrcm_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 *brcmf_sdbrcm_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; |
| |
| brcmf_c_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 (!(brcmf_sdbrcm_probe_attach(bus, sdh, regsva, devid))) { |
| DHD_ERROR(("%s: brcmf_sdbrcm_probe_attach failed\n", __func__)); |
| goto fail; |
| } |
| |
| spin_lock_init(&bus->txqlock); |
| |
| /* 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 (!(brcmf_sdbrcm_probe_malloc(bus, sdh))) { |
| DHD_ERROR(("%s: brcmf_sdbrcm_probe_malloc failed\n", __func__)); |
| goto fail; |
| } |
| |
| if (!(brcmf_sdbrcm_probe_init(bus, sdh))) { |
| DHD_ERROR(("%s: brcmf_sdbrcm_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__)); |
| brcmf_sdcard_intr_disable(sdh); |
| ret = brcmf_sdcard_intr_reg(sdh, brcmf_sdbrcm_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: |
| brcmf_sdbrcm_release(bus); |
| return NULL; |
| } |
| |
| static bool |
| brcmf_sdbrcm_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 (brcmf_sdbrcm_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", |
| brcmf_sdcard_reg_read(bus->sdh, SI_ENUM_BASE, 4)); |
| |
| #endif /* DHD_DEBUG */ |
| |
| /* |
| * Force PLL off until brcmf_sdbrcm_chip_attach() |
| * programs PLL control regs |
| */ |
| |
| brcmf_sdcard_cfg_write(sdh, SDIO_FUNC_1, SBSDIO_FUNC1_CHIPCLKCSR, |
| DHD_INIT_CLKCTL1, &err); |
| if (!err) |
| clkctl = |
| brcmf_sdcard_cfg_read(sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_CHIPCLKCSR, &err); |
| |
| if (err || ((clkctl & ~SBSDIO_AVBITS) != DHD_INIT_CLKCTL1)) { |
| DHD_ERROR(("brcmf_sdbrcm_probe: ChipClkCSR access: err %d wrote" |
| " 0x%02x read 0x%02x\n", |
| err, DHD_INIT_CLKCTL1, clkctl)); |
| goto fail; |
| } |
| |
| if (brcmf_sdbrcm_chip_attach(bus, regsva)) { |
| DHD_ERROR(("%s: brcmf_sdbrcm_chip_attach failed!\n", __func__)); |
| goto fail; |
| } |
| |
| brcmf_sdcard_chipinfo(sdh, bus->ci->chip, bus->ci->chiprev); |
| |
| if (!brcmf_sdbrcm_chipmatch((u16) bus->ci->chip)) { |
| DHD_ERROR(("%s: unsupported chip: 0x%04x\n", |
| __func__, bus->ci->chip)); |
| goto fail; |
| } |
| |
| brcmf_sdbrcm_sdiod_drive_strength_init(bus, dhd_sdiod_drive_strength); |
| |
| /* Get info on the ARM and SOCRAM cores... */ |
| if (!DHD_NOPMU(bus)) { |
| bus->armrev = SBCOREREV(brcmf_sdcard_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) |
| brcmf_sdbrcm_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); |
| |
| brcmu_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 brcmf_sdbrcm_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 brcmf_sdbrcm_probe_init(dhd_bus_t *bus, void *sdh) |
| { |
| s32 fnum; |
| |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| #ifdef SDTEST |
| brcmf_sdbrcm_pktgen_init(bus); |
| #endif /* SDTEST */ |
| |
| /* Disable F2 to clear any intermediate frame state on the dongle */ |
| brcmf_sdcard_cfg_write(sdh, SDIO_FUNC_0, SDIO_CCCR_IOEx, |
| 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... */ |
| brcmf_sdcard_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 F2 block size, set roundup accordingly */ |
| fnum = 2; |
| if (brcmf_sdcard_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 (brcmf_sdcard_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 = brcmf_sdbrcm_download_firmware(bus, bus->sdh); |
| |
| return ret; |
| } |
| |
| static bool |
| brcmf_sdbrcm_download_firmware(struct dhd_bus *bus, void *sdh) |
| { |
| bool ret; |
| |
| /* Download the firmware */ |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
| |
| ret = _brcmf_sdbrcm_download_firmware(bus) == 0; |
| |
| brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false); |
| |
| return ret; |
| } |
| |
| /* Detach and free everything */ |
| static void brcmf_sdbrcm_release(dhd_bus_t *bus) |
| { |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| if (bus) { |
| /* De-register interrupt handler */ |
| brcmf_sdcard_intr_disable(bus->sdh); |
| brcmf_sdcard_intr_dereg(bus->sdh); |
| |
| if (bus->dhd) { |
| dhd_detach(bus->dhd); |
| brcmf_sdbrcm_release_dongle(bus); |
| bus->dhd = NULL; |
| } |
| |
| brcmf_sdbrcm_release_malloc(bus); |
| |
| kfree(bus); |
| } |
| |
| DHD_TRACE(("%s: Disconnected\n", __func__)); |
| } |
| |
| static void brcmf_sdbrcm_release_malloc(dhd_bus_t *bus) |
| { |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| if (bus->dhd && bus->dhd->dongle_reset) |
| return; |
| |
| kfree(bus->rxbuf); |
| bus->rxctl = bus->rxbuf = NULL; |
| bus->rxlen = 0; |
| |
| kfree(bus->databuf); |
| bus->databuf = NULL; |
| } |
| |
| static void brcmf_sdbrcm_release_dongle(dhd_bus_t *bus) |
| { |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| if (bus->dhd && bus->dhd->dongle_reset) |
| return; |
| |
| if (bus->ci) { |
| brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false); |
| brcmf_sdbrcm_clkctl(bus, CLK_NONE, false); |
| brcmf_sdbrcm_chip_detach(bus); |
| if (bus->vars && bus->varsz) |
| kfree(bus->vars); |
| bus->vars = NULL; |
| } |
| |
| DHD_TRACE(("%s: Disconnected\n", __func__)); |
| } |
| |
| static void brcmf_sdbrcm_disconnect(void *ptr) |
| { |
| dhd_bus_t *bus = (dhd_bus_t *)ptr; |
| |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| if (bus) { |
| ASSERT(bus->dhd); |
| brcmf_sdbrcm_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 = { |
| brcmf_sdbrcm_probe, |
| brcmf_sdbrcm_disconnect |
| }; |
| |
| int dhd_bus_register(void) |
| { |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| return brcmf_sdio_register(&dhd_sdio); |
| } |
| |
| void dhd_bus_unregister(void) |
| { |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| brcmf_sdio_unregister(); |
| } |
| |
| static int brcmf_sdbrcm_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__, brcmf_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 = brcmf_sdbrcm_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 brcmf_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 brcmf_sdbrcm_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 = brcmf_process_nvram_vars(bufp, len); |
| bufp += len; |
| *bufp++ = 0; |
| if (len) |
| bcmerror = brcmf_sdbrcm_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 _brcmf_sdbrcm_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')) |
| return bcmerror; |
| |
| /* Keep arm in reset */ |
| if (brcmf_sdbrcm_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 (brcmf_sdbrcm_download_code_file(bus, bus->fw_path)) { |
| DHD_ERROR(("%s: dongle image file download failed\n", |
| __func__)); |
| goto err; |
| } else { |
| embed = false; |
| dlok = true; |
| } |
| } |
| 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 (brcmf_sdbrcm_download_nvram(bus)) { |
| DHD_ERROR(("%s: dongle nvram file download failed\n", |
| __func__)); |
| } |
| |
| /* Take arm out of reset */ |
| if (brcmf_sdbrcm_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 |
| brcmf_sdbrcm_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 brcmf_sdcard_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 */ |
| brcmf_sdbrcm_bus_stop(bus, false); |
| |
| /* Clean tx/rx buffer pointers, |
| detach from the dongle */ |
| brcmf_sdbrcm_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 */ |
| brcmf_sdcard_reset(bus->sdh); |
| |
| /* Attempt to re-attach & download */ |
| if (brcmf_sdbrcm_probe_attach(bus, bus->sdh, |
| (u32 *) SI_ENUM_BASE, |
| bus->cl_devid)) { |
| /* Attempt to download binary to the dongle */ |
| if (brcmf_sdbrcm_probe_init |
| (bus, bus->sdh) |
| && brcmf_sdbrcm_download_firmware(bus, |
| bus->sdh)) { |
| |
| /* Re-init bus, enable F2 transfer */ |
| brcmf_sdbrcm_bus_init( |
| (dhd_pub_t *) bus->dhd, false); |
| |
| #if defined(OOB_INTR_ONLY) |
| brcmf_sdbrcm_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 |
| brcmf_sdbrcm_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 = brcmf_sdcard_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 = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(ci->cccorebase, sbidhigh), 4); |
| ci->ccrev = SBCOREREV(regdata); |
| |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_CC_REG(ci->cccorebase, pmucapabilities), 4); |
| ci->pmurev = regdata & PCAP_REV_MASK; |
| |
| regdata = brcmf_sdcard_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 = brcmf_sdcard_reg_read(sdh, |
| CORE_CC_REG(ci->cccorebase, capabilities), 4); |
| |
| return 0; |
| } |
| |
| static void |
| brcmf_sdbrcm_chip_disablecore(bcmsdh_info_t *sdh, u32 corebase) |
| { |
| u32 regdata; |
| |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbtmstatelow), 4); |
| if (regdata & SBTML_RESET) |
| return; |
| |
| regdata = brcmf_sdcard_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 = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbtmstatelow), 4); |
| brcmf_sdcard_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, |
| regdata | SBTML_REJ); |
| |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbtmstatelow), 4); |
| udelay(1); |
| SPINWAIT((brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbtmstatehigh), 4) & |
| SBTMH_BUSY), 100000); |
| |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbtmstatehigh), 4); |
| if (regdata & SBTMH_BUSY) |
| DHD_ERROR(("%s: ARM core still busy\n", __func__)); |
| |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbidlow), 4); |
| if (regdata & SBIDL_INIT) { |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbimstate), 4) | |
| SBIM_RJ; |
| brcmf_sdcard_reg_write(sdh, |
| CORE_SB(corebase, sbimstate), 4, |
| regdata); |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbimstate), 4); |
| udelay(1); |
| SPINWAIT((brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbimstate), 4) & |
| SBIM_BY), 100000); |
| } |
| |
| /* set reset and reject while enabling the clocks */ |
| brcmf_sdcard_reg_write(sdh, |
| CORE_SB(corebase, sbtmstatelow), 4, |
| (((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | |
| SBTML_REJ | SBTML_RESET)); |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbtmstatelow), 4); |
| udelay(10); |
| |
| /* clear the initiator reject bit */ |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbidlow), 4); |
| if (regdata & SBIDL_INIT) { |
| regdata = brcmf_sdcard_reg_read(sdh, |
| CORE_SB(corebase, sbimstate), 4) & |
| ~SBIM_RJ; |
| brcmf_sdcard_reg_write(sdh, |
| CORE_SB(corebase, sbimstate), 4, |
| regdata); |
| } |
| } |
| |
| /* leave reset and reject asserted */ |
| brcmf_sdcard_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, |
| (SBTML_REJ | SBTML_RESET)); |
| udelay(1); |
| } |
| |
| static int |
| brcmf_sdbrcm_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; |
| brcmf_sdcard_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 = brcmf_sdcard_cfg_read(bus->sdh, SDIO_FUNC_1, |
| SBSDIO_FUNC1_CHIPCLKCSR, NULL); |
| if ((clkval & ~SBSDIO_AVBITS) == clkset) { |
| SPINWAIT(((clkval = |
| brcmf_sdcard_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; |
| brcmf_sdcard_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 */ |
| brcmf_sdcard_cfg_write(bus->sdh, SDIO_FUNC_1, SBSDIO_FUNC1_SDIOPULLUP, |
| 0, NULL); |
| |
| err = brcmf_sdbrcm_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. |
| */ |
| brcmf_sdbrcm_chip_disablecore(bus->sdh, ci->armcorebase); |
| |
| brcmf_sdcard_reg_write(bus->sdh, |
| CORE_CC_REG(ci->cccorebase, gpiopullup), 4, 0); |
| brcmf_sdcard_reg_write(bus->sdh, |
| CORE_CC_REG(ci->cccorebase, gpiopulldown), 4, 0); |
| |
| /* Disable F2 to clear any intermediate frame state on the dongle */ |
| brcmf_sdcard_cfg_write(bus->sdh, SDIO_FUNC_0, SDIO_CCCR_IOEx, |
| SDIO_FUNC_ENABLE_1, NULL); |
| |
| /* WAR: cmd52 backplane read so core HW will drop ALPReq */ |
| clkval = brcmf_sdcard_cfg_read(bus->sdh, SDIO_FUNC_1, |
| 0, NULL); |
| |
| /* Done with backplane-dependent accesses, can drop clock... */ |
| brcmf_sdcard_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 |
| brcmf_sdbrcm_chip_resetcore(bcmsdh_info_t *sdh, u32 corebase) |
| { |
| u32 regdata; |
| |
| /* |
| * Must do the disable sequence first to work for |
| * arbitrary current core state. |
| */ |
| brcmf_sdbrcm_chip_disablecore(sdh, corebase); |
| |
| /* |
| * Now do the initialization sequence. |
| * set reset while enabling the clock and |
| * forcing them on throughout the core |
| */ |
| brcmf_sdcard_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, |
| ((SICF_FGC | SICF_CLOCK_EN) << SBTML_SICF_SHIFT) | |
| SBTML_RESET); |
| udelay(1); |
| |
| regdata = brcmf_sdcard_reg_read(sdh, CORE_SB(corebase, sbtmstatehigh), |
| 4); |
| if (regdata & SBTMH_SERR) |
| brcmf_sdcard_reg_write(sdh, CORE_SB(corebase, sbtmstatehigh), |
| 4, 0); |
| |
| regdata = brcmf_sdcard_reg_read(sdh, CORE_SB(corebase, sbimstate), 4); |
| if (regdata & (SBIM_IBE | SBIM_TO)) |
| brcmf_sdcard_reg_write(sdh, CORE_SB(corebase, sbimstate), 4, |
| regdata & ~(SBIM_IBE | SBIM_TO)); |
| |
| /* clear reset and allow it to propagate throughout the core */ |
| brcmf_sdcard_reg_write(sdh, CORE_SB(corebase, sbtmstatelow), 4, |
| (SICF_FGC << SBTML_SICF_SHIFT) | |
| (SICF_CLOCK_EN << SBTML_SICF_SHIFT)); |
| udelay(1); |
| |
| /* leave clock enabled */ |
| brcmf_sdcard_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 |
| brcmf_sdbrcm_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", |
| brcmu_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; |
| } |
| } |
| |
| brcmf_sdcard_reg_write(bus->sdh, |
| CORE_CC_REG(bus->ci->cccorebase, chipcontrol_addr), |
| 4, 1); |
| cc_data_temp = brcmf_sdcard_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; |
| brcmf_sdcard_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 |
| brcmf_sdbrcm_chip_detach(struct dhd_bus *bus) |
| { |
| DHD_TRACE(("%s: Enter\n", __func__)); |
| |
| kfree(bus->ci); |
| bus->ci = NULL; |
| } |