| /* |
| * 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/netdevice.h> |
| #include <linux/mmc/sdio.h> |
| #include <linux/mmc/core.h> |
| #include <linux/mmc/sdio_func.h> |
| #include <linux/mmc/sdio_ids.h> |
| #include <linux/suspend.h> |
| #include <linux/errno.h> |
| |
| #include <defs.h> |
| #include <brcm_hw_ids.h> |
| #include <brcmu_utils.h> |
| #include <brcmu_wifi.h> |
| #include "sdio_host.h" |
| #include "bcmsdbus.h" |
| #include "sdiovar.h" /* ioctl/iovars */ |
| #include "dngl_stats.h" |
| #include "dhd.h" |
| #include "bcmsdh_sdmmc.h" |
| |
| static void brcmf_sdioh_irqhandler(struct sdio_func *func); |
| static void brcmf_sdioh_irqhandler_f2(struct sdio_func *func); |
| static int brcmf_sdioh_get_cisaddr(struct sdioh_info *sd, u32 regaddr); |
| |
| uint sd_f2_blocksize = 512; /* Default blocksize */ |
| |
| uint sd_msglevel = 0x01; |
| BRCMF_PM_RESUME_WAIT_INIT(sdioh_request_byte_wait); |
| BRCMF_PM_RESUME_WAIT_INIT(sdioh_request_word_wait); |
| BRCMF_PM_RESUME_WAIT_INIT(sdioh_request_packet_wait); |
| BRCMF_PM_RESUME_WAIT_INIT(sdioh_request_buffer_wait); |
| |
| #define DMA_ALIGN_MASK 0x03 |
| |
| static int |
| brcmf_sdioh_card_regread(struct sdioh_info *sd, int func, u32 regaddr, |
| int regsize, u32 *data); |
| |
| static int brcmf_sdioh_enablefuncs(struct sdioh_info *sd) |
| { |
| int err_ret; |
| u32 fbraddr; |
| u8 func; |
| |
| sd_trace(("%s\n", __func__)); |
| |
| /* Get the Card's common CIS address */ |
| sd->com_cis_ptr = brcmf_sdioh_get_cisaddr(sd, SDIO_CCCR_CIS); |
| sd->func_cis_ptr[0] = sd->com_cis_ptr; |
| sd_info(("%s: Card's Common CIS Ptr = 0x%x\n", __func__, |
| sd->com_cis_ptr)); |
| |
| /* Get the Card's function CIS (for each function) */ |
| for (fbraddr = SDIO_FBR_BASE(1), func = 1; |
| func <= sd->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) { |
| sd->func_cis_ptr[func] = |
| brcmf_sdioh_get_cisaddr(sd, SDIO_FBR_CIS + fbraddr); |
| sd_info(("%s: Function %d CIS Ptr = 0x%x\n", __func__, func, |
| sd->func_cis_ptr[func])); |
| } |
| |
| sd->func_cis_ptr[0] = sd->com_cis_ptr; |
| sd_info(("%s: Card's Common CIS Ptr = 0x%x\n", __func__, |
| sd->com_cis_ptr)); |
| |
| /* Enable Function 1 */ |
| sdio_claim_host(gInstance->func[1]); |
| err_ret = sdio_enable_func(gInstance->func[1]); |
| sdio_release_host(gInstance->func[1]); |
| if (err_ret) { |
| sd_err(("brcmf_sdioh_enablefuncs: Failed to enable F1 " |
| "Err: 0x%08x", err_ret)); |
| } |
| |
| return false; |
| } |
| |
| /* |
| * Public entry points & extern's |
| */ |
| struct sdioh_info *brcmf_sdioh_attach(void *bar0, uint irq) |
| { |
| struct sdioh_info *sd; |
| int err_ret; |
| |
| sd_trace(("%s\n", __func__)); |
| |
| if (gInstance == NULL) { |
| sd_err(("%s: SDIO Device not present\n", __func__)); |
| return NULL; |
| } |
| |
| sd = kzalloc(sizeof(struct sdioh_info), GFP_ATOMIC); |
| if (sd == NULL) { |
| sd_err(("sdioh_attach: out of memory\n")); |
| return NULL; |
| } |
| if (brcmf_sdioh_osinit(sd) != 0) { |
| sd_err(("%s:sdioh_sdmmc_osinit() failed\n", __func__)); |
| kfree(sd); |
| return NULL; |
| } |
| |
| sd->num_funcs = 2; |
| sd->use_client_ints = true; |
| sd->client_block_size[0] = 64; |
| |
| gInstance->sd = sd; |
| |
| /* Claim host controller */ |
| sdio_claim_host(gInstance->func[1]); |
| |
| sd->client_block_size[1] = 64; |
| err_ret = sdio_set_block_size(gInstance->func[1], 64); |
| if (err_ret) |
| sd_err(("brcmf_sdioh_attach: Failed to set F1 blocksize\n")); |
| |
| /* Release host controller F1 */ |
| sdio_release_host(gInstance->func[1]); |
| |
| if (gInstance->func[2]) { |
| /* Claim host controller F2 */ |
| sdio_claim_host(gInstance->func[2]); |
| |
| sd->client_block_size[2] = sd_f2_blocksize; |
| err_ret = |
| sdio_set_block_size(gInstance->func[2], sd_f2_blocksize); |
| if (err_ret) |
| sd_err(("brcmf_sdioh_attach: Failed to set F2 blocksize" |
| " to %d\n", sd_f2_blocksize)); |
| |
| /* Release host controller F2 */ |
| sdio_release_host(gInstance->func[2]); |
| } |
| |
| brcmf_sdioh_enablefuncs(sd); |
| |
| sd_trace(("%s: Done\n", __func__)); |
| return sd; |
| } |
| |
| extern int brcmf_sdioh_detach(struct sdioh_info *sd) |
| { |
| sd_trace(("%s\n", __func__)); |
| |
| if (sd) { |
| |
| /* Disable Function 2 */ |
| sdio_claim_host(gInstance->func[2]); |
| sdio_disable_func(gInstance->func[2]); |
| sdio_release_host(gInstance->func[2]); |
| |
| /* Disable Function 1 */ |
| sdio_claim_host(gInstance->func[1]); |
| sdio_disable_func(gInstance->func[1]); |
| sdio_release_host(gInstance->func[1]); |
| |
| /* deregister irq */ |
| brcmf_sdioh_osfree(sd); |
| |
| kfree(sd); |
| } |
| return 0; |
| } |
| |
| /* Configure callback to client when we receive client interrupt */ |
| extern int |
| brcmf_sdioh_interrupt_register(struct sdioh_info *sd, sdioh_cb_fn_t fn, |
| void *argh) |
| { |
| sd_trace(("%s: Entering\n", __func__)); |
| if (fn == NULL) { |
| sd_err(("%s: interrupt handler is NULL, not registering\n", |
| __func__)); |
| return -EINVAL; |
| } |
| |
| sd->intr_handler = fn; |
| sd->intr_handler_arg = argh; |
| sd->intr_handler_valid = true; |
| |
| /* register and unmask irq */ |
| if (gInstance->func[2]) { |
| sdio_claim_host(gInstance->func[2]); |
| sdio_claim_irq(gInstance->func[2], brcmf_sdioh_irqhandler_f2); |
| sdio_release_host(gInstance->func[2]); |
| } |
| |
| if (gInstance->func[1]) { |
| sdio_claim_host(gInstance->func[1]); |
| sdio_claim_irq(gInstance->func[1], brcmf_sdioh_irqhandler); |
| sdio_release_host(gInstance->func[1]); |
| } |
| |
| return 0; |
| } |
| |
| extern int brcmf_sdioh_interrupt_deregister(struct sdioh_info *sd) |
| { |
| sd_trace(("%s: Entering\n", __func__)); |
| |
| if (gInstance->func[1]) { |
| /* register and unmask irq */ |
| sdio_claim_host(gInstance->func[1]); |
| sdio_release_irq(gInstance->func[1]); |
| sdio_release_host(gInstance->func[1]); |
| } |
| |
| if (gInstance->func[2]) { |
| /* Claim host controller F2 */ |
| sdio_claim_host(gInstance->func[2]); |
| sdio_release_irq(gInstance->func[2]); |
| /* Release host controller F2 */ |
| sdio_release_host(gInstance->func[2]); |
| } |
| |
| sd->intr_handler_valid = false; |
| sd->intr_handler = NULL; |
| sd->intr_handler_arg = NULL; |
| |
| return 0; |
| } |
| |
| extern int |
| brcmf_sdioh_interrupt_query(struct sdioh_info *sd, bool *onoff) |
| { |
| sd_trace(("%s: Entering\n", __func__)); |
| *onoff = sd->client_intr_enabled; |
| return 0; |
| } |
| |
| uint brcmf_sdioh_query_iofnum(struct sdioh_info *sd) |
| { |
| return sd->num_funcs; |
| } |
| |
| /* IOVar table */ |
| enum { |
| IOV_MSGLEVEL = 1, |
| IOV_BLOCKSIZE, |
| IOV_USEINTS, |
| IOV_NUMINTS, |
| IOV_DEVREG, |
| IOV_HCIREGS, |
| IOV_RXCHAIN |
| }; |
| |
| const struct brcmu_iovar sdioh_iovars[] = { |
| {"sd_msglevel", IOV_MSGLEVEL, 0, IOVT_UINT32, 0}, |
| {"sd_blocksize", IOV_BLOCKSIZE, 0, IOVT_UINT32, 0},/* ((fn << 16) | |
| size) */ |
| {"sd_ints", IOV_USEINTS, 0, IOVT_BOOL, 0}, |
| {"sd_numints", IOV_NUMINTS, 0, IOVT_UINT32, 0}, |
| {"sd_devreg", IOV_DEVREG, 0, IOVT_BUFFER, sizeof(struct brcmf_sdreg)} |
| , |
| {"sd_rxchain", IOV_RXCHAIN, 0, IOVT_BOOL, 0} |
| , |
| {NULL, 0, 0, 0, 0} |
| }; |
| |
| int |
| brcmf_sdioh_iovar_op(struct sdioh_info *si, const char *name, |
| void *params, int plen, void *arg, int len, bool set) |
| { |
| const struct brcmu_iovar *vi = NULL; |
| int bcmerror = 0; |
| int val_size; |
| s32 int_val = 0; |
| bool bool_val; |
| u32 actionid; |
| |
| ASSERT(name); |
| ASSERT(len >= 0); |
| |
| /* Get must have return space; Set does not take qualifiers */ |
| ASSERT(set || (arg && len)); |
| ASSERT(!set || (!params && !plen)); |
| |
| sd_trace(("%s: Enter (%s %s)\n", __func__, (set ? "set" : "get"), |
| name)); |
| |
| vi = brcmu_iovar_lookup(sdioh_iovars, name); |
| if (vi == NULL) { |
| bcmerror = -ENOTSUPP; |
| goto exit; |
| } |
| |
| bcmerror = brcmu_iovar_lencheck(vi, arg, len, set); |
| if (bcmerror != 0) |
| goto exit; |
| |
| /* Set up params so get and set can share the convenience variables */ |
| 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 |
| val_size = sizeof(int); |
| |
| if (plen >= (int)sizeof(int_val)) |
| memcpy(&int_val, params, sizeof(int_val)); |
| |
| bool_val = (int_val != 0) ? true : false; |
| |
| actionid = set ? IOV_SVAL(vi->varid) : IOV_GVAL(vi->varid); |
| switch (actionid) { |
| case IOV_GVAL(IOV_MSGLEVEL): |
| int_val = (s32) sd_msglevel; |
| memcpy(arg, &int_val, val_size); |
| break; |
| |
| case IOV_SVAL(IOV_MSGLEVEL): |
| sd_msglevel = int_val; |
| break; |
| |
| case IOV_GVAL(IOV_BLOCKSIZE): |
| if ((u32) int_val > si->num_funcs) { |
| bcmerror = -EINVAL; |
| break; |
| } |
| int_val = (s32) si->client_block_size[int_val]; |
| memcpy(arg, &int_val, val_size); |
| break; |
| |
| case IOV_SVAL(IOV_BLOCKSIZE): |
| { |
| uint func = ((u32) int_val >> 16); |
| uint blksize = (u16) int_val; |
| uint maxsize; |
| |
| if (func > si->num_funcs) { |
| bcmerror = -EINVAL; |
| break; |
| } |
| |
| switch (func) { |
| case 0: |
| maxsize = 32; |
| break; |
| case 1: |
| maxsize = BLOCK_SIZE_4318; |
| break; |
| case 2: |
| maxsize = BLOCK_SIZE_4328; |
| break; |
| default: |
| maxsize = 0; |
| } |
| if (blksize > maxsize) { |
| bcmerror = -EINVAL; |
| break; |
| } |
| if (!blksize) |
| blksize = maxsize; |
| |
| /* Now set it */ |
| si->client_block_size[func] = blksize; |
| |
| break; |
| } |
| |
| case IOV_GVAL(IOV_RXCHAIN): |
| int_val = false; |
| memcpy(arg, &int_val, val_size); |
| break; |
| |
| case IOV_GVAL(IOV_USEINTS): |
| int_val = (s32) si->use_client_ints; |
| memcpy(arg, &int_val, val_size); |
| break; |
| |
| case IOV_SVAL(IOV_USEINTS): |
| si->use_client_ints = (bool) int_val; |
| if (si->use_client_ints) |
| si->intmask |= CLIENT_INTR; |
| else |
| si->intmask &= ~CLIENT_INTR; |
| |
| break; |
| |
| case IOV_GVAL(IOV_NUMINTS): |
| int_val = (s32) si->intrcount; |
| memcpy(arg, &int_val, val_size); |
| break; |
| |
| case IOV_GVAL(IOV_DEVREG): |
| { |
| struct brcmf_sdreg *sd_ptr = |
| (struct brcmf_sdreg *) params; |
| u8 data = 0; |
| |
| if (brcmf_sdioh_cfg_read |
| (si, sd_ptr->func, sd_ptr->offset, &data)) { |
| bcmerror = -EIO; |
| break; |
| } |
| |
| int_val = (int)data; |
| memcpy(arg, &int_val, sizeof(int_val)); |
| break; |
| } |
| |
| case IOV_SVAL(IOV_DEVREG): |
| { |
| struct brcmf_sdreg *sd_ptr = |
| (struct brcmf_sdreg *) params; |
| u8 data = (u8) sd_ptr->value; |
| |
| if (brcmf_sdioh_cfg_write |
| (si, sd_ptr->func, sd_ptr->offset, &data)) { |
| bcmerror = -EIO; |
| break; |
| } |
| break; |
| } |
| |
| default: |
| bcmerror = -ENOTSUPP; |
| break; |
| } |
| exit: |
| |
| return bcmerror; |
| } |
| |
| extern int |
| brcmf_sdioh_cfg_read(struct sdioh_info *sd, uint fnc_num, u32 addr, u8 *data) |
| { |
| int status; |
| /* No lock needed since brcmf_sdioh_request_byte does locking */ |
| status = brcmf_sdioh_request_byte(sd, SDIOH_READ, fnc_num, addr, data); |
| return status; |
| } |
| |
| extern int |
| brcmf_sdioh_cfg_write(struct sdioh_info *sd, uint fnc_num, u32 addr, u8 *data) |
| { |
| /* No lock needed since brcmf_sdioh_request_byte does locking */ |
| int status; |
| status = brcmf_sdioh_request_byte(sd, SDIOH_WRITE, fnc_num, addr, data); |
| return status; |
| } |
| |
| static int brcmf_sdioh_get_cisaddr(struct sdioh_info *sd, u32 regaddr) |
| { |
| /* read 24 bits and return valid 17 bit addr */ |
| int i; |
| u32 scratch, regdata; |
| u8 *ptr = (u8 *)&scratch; |
| for (i = 0; i < 3; i++) { |
| if ((brcmf_sdioh_card_regread(sd, 0, regaddr, 1, ®data)) != |
| SUCCESS) |
| sd_err(("%s: Can't read!\n", __func__)); |
| |
| *ptr++ = (u8) regdata; |
| regaddr++; |
| } |
| |
| /* Only the lower 17-bits are valid */ |
| scratch = le32_to_cpu(scratch); |
| scratch &= 0x0001FFFF; |
| return scratch; |
| } |
| |
| extern int |
| brcmf_sdioh_cis_read(struct sdioh_info *sd, uint func, u8 *cisd, u32 length) |
| { |
| u32 count; |
| int offset; |
| u32 foo; |
| u8 *cis = cisd; |
| |
| sd_trace(("%s: Func = %d\n", __func__, func)); |
| |
| if (!sd->func_cis_ptr[func]) { |
| memset(cis, 0, length); |
| sd_err(("%s: no func_cis_ptr[%d]\n", __func__, func)); |
| return -ENOTSUPP; |
| } |
| |
| sd_err(("%s: func_cis_ptr[%d]=0x%04x\n", __func__, func, |
| sd->func_cis_ptr[func])); |
| |
| for (count = 0; count < length; count++) { |
| offset = sd->func_cis_ptr[func] + count; |
| if (brcmf_sdioh_card_regread(sd, 0, offset, 1, &foo) < 0) { |
| sd_err(("%s: regread failed: Can't read CIS\n", |
| __func__)); |
| return -EIO; |
| } |
| |
| *cis = (u8) (foo & 0xff); |
| cis++; |
| } |
| |
| return 0; |
| } |
| |
| extern int |
| brcmf_sdioh_request_byte(struct sdioh_info *sd, uint rw, uint func, |
| uint regaddr, u8 *byte) |
| { |
| int err_ret; |
| |
| sd_info(("%s: rw=%d, func=%d, addr=0x%05x\n", __func__, rw, func, |
| regaddr)); |
| |
| BRCMF_PM_RESUME_WAIT(sdioh_request_byte_wait); |
| BRCMF_PM_RESUME_RETURN_ERROR(-EIO); |
| if (rw) { /* CMD52 Write */ |
| if (func == 0) { |
| /* Can only directly write to some F0 registers. |
| * Handle F2 enable |
| * as a special case. |
| */ |
| if (regaddr == SDIO_CCCR_IOEx) { |
| if (gInstance->func[2]) { |
| sdio_claim_host(gInstance->func[2]); |
| if (*byte & SDIO_FUNC_ENABLE_2) { |
| /* Enable Function 2 */ |
| err_ret = |
| sdio_enable_func |
| (gInstance->func[2]); |
| if (err_ret) |
| sd_err(("request_byte: " |
| "enable F2 " |
| "failed:%d", |
| err_ret)); |
| } else { |
| /* Disable Function 2 */ |
| err_ret = |
| sdio_disable_func |
| (gInstance->func[2]); |
| if (err_ret) |
| sd_err(("request_byte: " |
| "Disab F2 " |
| "failed:%d", |
| err_ret)); |
| } |
| sdio_release_host(gInstance->func[2]); |
| } |
| } |
| /* to allow abort command through F1 */ |
| else if (regaddr == SDIO_CCCR_ABORT) { |
| sdio_claim_host(gInstance->func[func]); |
| /* |
| * this sdio_f0_writeb() can be replaced |
| * with another api |
| * depending upon MMC driver change. |
| * As of this time, this is temporaray one |
| */ |
| sdio_writeb(gInstance->func[func], *byte, |
| regaddr, &err_ret); |
| sdio_release_host(gInstance->func[func]); |
| } |
| else if (regaddr < 0xF0) { |
| sd_err(("brcmf: F0 Wr:0x%02x: write " |
| "disallowed\n", regaddr)); |
| } else { |
| /* Claim host controller, perform F0 write, |
| and release */ |
| sdio_claim_host(gInstance->func[func]); |
| sdio_f0_writeb(gInstance->func[func], *byte, |
| regaddr, &err_ret); |
| sdio_release_host(gInstance->func[func]); |
| } |
| } else { |
| /* Claim host controller, perform Fn write, |
| and release */ |
| sdio_claim_host(gInstance->func[func]); |
| sdio_writeb(gInstance->func[func], *byte, regaddr, |
| &err_ret); |
| sdio_release_host(gInstance->func[func]); |
| } |
| } else { /* CMD52 Read */ |
| /* Claim host controller, perform Fn read, and release */ |
| sdio_claim_host(gInstance->func[func]); |
| |
| if (func == 0) { |
| *byte = |
| sdio_f0_readb(gInstance->func[func], regaddr, |
| &err_ret); |
| } else { |
| *byte = |
| sdio_readb(gInstance->func[func], regaddr, |
| &err_ret); |
| } |
| |
| sdio_release_host(gInstance->func[func]); |
| } |
| |
| if (err_ret) |
| sd_err(("brcmf: Failed to %s byte F%d:@0x%05x=%02x, " |
| "Err: %d\n", rw ? "Write" : "Read", func, regaddr, |
| *byte, err_ret)); |
| |
| return err_ret; |
| } |
| |
| extern int |
| brcmf_sdioh_request_word(struct sdioh_info *sd, uint cmd_type, uint rw, |
| uint func, uint addr, u32 *word, uint nbytes) |
| { |
| int err_ret = -EIO; |
| |
| if (func == 0) { |
| sd_err(("%s: Only CMD52 allowed to F0.\n", __func__)); |
| return -EINVAL; |
| } |
| |
| sd_info(("%s: cmd_type=%d, rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", |
| __func__, cmd_type, rw, func, addr, nbytes)); |
| |
| BRCMF_PM_RESUME_WAIT(sdioh_request_word_wait); |
| BRCMF_PM_RESUME_RETURN_ERROR(-EIO); |
| /* Claim host controller */ |
| sdio_claim_host(gInstance->func[func]); |
| |
| if (rw) { /* CMD52 Write */ |
| if (nbytes == 4) { |
| sdio_writel(gInstance->func[func], *word, addr, |
| &err_ret); |
| } else if (nbytes == 2) { |
| sdio_writew(gInstance->func[func], (*word & 0xFFFF), |
| addr, &err_ret); |
| } else { |
| sd_err(("%s: Invalid nbytes: %d\n", __func__, nbytes)); |
| } |
| } else { /* CMD52 Read */ |
| if (nbytes == 4) { |
| *word = |
| sdio_readl(gInstance->func[func], addr, &err_ret); |
| } else if (nbytes == 2) { |
| *word = |
| sdio_readw(gInstance->func[func], addr, |
| &err_ret) & 0xFFFF; |
| } else { |
| sd_err(("%s: Invalid nbytes: %d\n", __func__, nbytes)); |
| } |
| } |
| |
| /* Release host controller */ |
| sdio_release_host(gInstance->func[func]); |
| |
| if (err_ret) { |
| sd_err(("brcmf: Failed to %s word, Err: 0x%08x", |
| rw ? "Write" : "Read", err_ret)); |
| } |
| |
| return err_ret; |
| } |
| |
| static int |
| brcmf_sdioh_request_packet(struct sdioh_info *sd, uint fix_inc, uint write, |
| uint func, uint addr, struct sk_buff *pkt) |
| { |
| bool fifo = (fix_inc == SDIOH_DATA_FIX); |
| u32 SGCount = 0; |
| int err_ret = 0; |
| |
| struct sk_buff *pnext; |
| |
| sd_trace(("%s: Enter\n", __func__)); |
| |
| ASSERT(pkt); |
| BRCMF_PM_RESUME_WAIT(sdioh_request_packet_wait); |
| BRCMF_PM_RESUME_RETURN_ERROR(-EIO); |
| |
| /* Claim host controller */ |
| sdio_claim_host(gInstance->func[func]); |
| for (pnext = pkt; pnext; pnext = pnext->next) { |
| uint pkt_len = pnext->len; |
| pkt_len += 3; |
| pkt_len &= 0xFFFFFFFC; |
| |
| /* Make sure the packet is aligned properly. |
| * If it isn't, then this |
| * is the fault of brcmf_sdioh_request_buffer() which |
| * is supposed to give |
| * us something we can work with. |
| */ |
| ASSERT(((u32) (pkt->data) & DMA_ALIGN_MASK) == 0); |
| |
| if ((write) && (!fifo)) { |
| err_ret = sdio_memcpy_toio(gInstance->func[func], addr, |
| ((u8 *) (pnext->data)), |
| pkt_len); |
| } else if (write) { |
| err_ret = sdio_memcpy_toio(gInstance->func[func], addr, |
| ((u8 *) (pnext->data)), |
| pkt_len); |
| } else if (fifo) { |
| err_ret = sdio_readsb(gInstance->func[func], |
| ((u8 *) (pnext->data)), |
| addr, pkt_len); |
| } else { |
| err_ret = sdio_memcpy_fromio(gInstance->func[func], |
| ((u8 *) (pnext->data)), |
| addr, pkt_len); |
| } |
| |
| if (err_ret) { |
| sd_err(("%s: %s FAILED %p[%d], addr=0x%05x, pkt_len=%d," |
| "ERR=0x%08x\n", __func__, |
| (write) ? "TX" : "RX", |
| pnext, SGCount, addr, pkt_len, err_ret)); |
| } else { |
| sd_trace(("%s: %s xfr'd %p[%d], addr=0x%05x, len=%d\n", |
| __func__, |
| (write) ? "TX" : "RX", |
| pnext, SGCount, addr, pkt_len)); |
| } |
| |
| if (!fifo) |
| addr += pkt_len; |
| SGCount++; |
| |
| } |
| |
| /* Release host controller */ |
| sdio_release_host(gInstance->func[func]); |
| |
| sd_trace(("%s: Exit\n", __func__)); |
| return err_ret; |
| } |
| |
| /* |
| * This function takes a buffer or packet, and fixes everything up |
| * so that in the end, a DMA-able packet is created. |
| * |
| * A buffer does not have an associated packet pointer, |
| * and may or may not be aligned. |
| * A packet may consist of a single packet, or a packet chain. |
| * If it is a packet chain, then all the packets in the chain |
| * must be properly aligned. |
| * |
| * If the packet data is not aligned, then there may only be |
| * one packet, and in this case, it is copied to a new |
| * aligned packet. |
| * |
| */ |
| extern int |
| brcmf_sdioh_request_buffer(struct sdioh_info *sd, uint pio_dma, uint fix_inc, |
| uint write, uint func, uint addr, uint reg_width, |
| uint buflen_u, u8 *buffer, struct sk_buff *pkt) |
| { |
| int Status; |
| struct sk_buff *mypkt = NULL; |
| |
| sd_trace(("%s: Enter\n", __func__)); |
| |
| BRCMF_PM_RESUME_WAIT(sdioh_request_buffer_wait); |
| BRCMF_PM_RESUME_RETURN_ERROR(-EIO); |
| /* Case 1: we don't have a packet. */ |
| if (pkt == NULL) { |
| sd_data(("%s: Creating new %s Packet, len=%d\n", |
| __func__, write ? "TX" : "RX", buflen_u)); |
| mypkt = brcmu_pkt_buf_get_skb(buflen_u); |
| if (!mypkt) { |
| sd_err(("%s: brcmu_pkt_buf_get_skb failed: len %d\n", |
| __func__, buflen_u)); |
| return -EIO; |
| } |
| |
| /* For a write, copy the buffer data into the packet. */ |
| if (write) |
| memcpy(mypkt->data, buffer, buflen_u); |
| |
| Status = brcmf_sdioh_request_packet(sd, fix_inc, write, func, |
| addr, mypkt); |
| |
| /* For a read, copy the packet data back to the buffer. */ |
| if (!write) |
| memcpy(buffer, mypkt->data, buflen_u); |
| |
| brcmu_pkt_buf_free_skb(mypkt); |
| } else if (((u32) (pkt->data) & DMA_ALIGN_MASK) != 0) { |
| /* Case 2: We have a packet, but it is unaligned. */ |
| |
| /* In this case, we cannot have a chain. */ |
| ASSERT(pkt->next == NULL); |
| |
| sd_data(("%s: Creating aligned %s Packet, len=%d\n", |
| __func__, write ? "TX" : "RX", pkt->len)); |
| mypkt = brcmu_pkt_buf_get_skb(pkt->len); |
| if (!mypkt) { |
| sd_err(("%s: brcmu_pkt_buf_get_skb failed: len %d\n", |
| __func__, pkt->len)); |
| return -EIO; |
| } |
| |
| /* For a write, copy the buffer data into the packet. */ |
| if (write) |
| memcpy(mypkt->data, pkt->data, pkt->len); |
| |
| Status = brcmf_sdioh_request_packet(sd, fix_inc, write, func, |
| addr, mypkt); |
| |
| /* For a read, copy the packet data back to the buffer. */ |
| if (!write) |
| memcpy(pkt->data, mypkt->data, mypkt->len); |
| |
| brcmu_pkt_buf_free_skb(mypkt); |
| } else { /* case 3: We have a packet and |
| it is aligned. */ |
| sd_data(("%s: Aligned %s Packet, direct DMA\n", |
| __func__, write ? "Tx" : "Rx")); |
| Status = brcmf_sdioh_request_packet(sd, fix_inc, write, func, |
| addr, pkt); |
| } |
| |
| return Status; |
| } |
| |
| /* this function performs "abort" for both of host & device */ |
| extern int brcmf_sdioh_abort(struct sdioh_info *sd, uint func) |
| { |
| char t_func = (char)func; |
| sd_trace(("%s: Enter\n", __func__)); |
| |
| /* issue abort cmd52 command through F0 */ |
| brcmf_sdioh_request_byte(sd, SDIOH_WRITE, SDIO_FUNC_0, SDIO_CCCR_ABORT, |
| &t_func); |
| |
| sd_trace(("%s: Exit\n", __func__)); |
| return 0; |
| } |
| |
| /* Disable device interrupt */ |
| void brcmf_sdioh_dev_intr_off(struct sdioh_info *sd) |
| { |
| sd_trace(("%s: %d\n", __func__, sd->use_client_ints)); |
| sd->intmask &= ~CLIENT_INTR; |
| } |
| |
| /* Enable device interrupt */ |
| void brcmf_sdioh_dev_intr_on(struct sdioh_info *sd) |
| { |
| sd_trace(("%s: %d\n", __func__, sd->use_client_ints)); |
| sd->intmask |= CLIENT_INTR; |
| } |
| |
| /* Read client card reg */ |
| int |
| brcmf_sdioh_card_regread(struct sdioh_info *sd, int func, u32 regaddr, |
| int regsize, u32 *data) |
| { |
| |
| if ((func == 0) || (regsize == 1)) { |
| u8 temp = 0; |
| |
| brcmf_sdioh_request_byte(sd, SDIOH_READ, func, regaddr, &temp); |
| *data = temp; |
| *data &= 0xff; |
| sd_data(("%s: byte read data=0x%02x\n", __func__, *data)); |
| } else { |
| brcmf_sdioh_request_word(sd, 0, SDIOH_READ, func, regaddr, data, |
| regsize); |
| if (regsize == 2) |
| *data &= 0xffff; |
| |
| sd_data(("%s: word read data=0x%08x\n", __func__, *data)); |
| } |
| |
| return SUCCESS; |
| } |
| |
| static void brcmf_sdioh_irqhandler(struct sdio_func *func) |
| { |
| struct sdioh_info *sd; |
| |
| sd_trace(("brcmf: ***IRQHandler\n")); |
| sd = gInstance->sd; |
| |
| ASSERT(sd != NULL); |
| sdio_release_host(gInstance->func[0]); |
| |
| if (sd->use_client_ints) { |
| sd->intrcount++; |
| ASSERT(sd->intr_handler); |
| ASSERT(sd->intr_handler_arg); |
| (sd->intr_handler) (sd->intr_handler_arg); |
| } else { |
| sd_err(("brcmf: ***IRQHandler\n")); |
| |
| sd_err(("%s: Not ready for intr: enabled %d, handler %p\n", |
| __func__, sd->client_intr_enabled, sd->intr_handler)); |
| } |
| |
| sdio_claim_host(gInstance->func[0]); |
| } |
| |
| /* interrupt handler for F2 (dummy handler) */ |
| static void brcmf_sdioh_irqhandler_f2(struct sdio_func *func) |
| { |
| struct sdioh_info *sd; |
| |
| sd_trace(("brcmf: ***IRQHandlerF2\n")); |
| |
| sd = gInstance->sd; |
| |
| ASSERT(sd != NULL); |
| } |
| |
| int brcmf_sdioh_start(struct sdioh_info *si, int stage) |
| { |
| return 0; |
| } |
| |
| int brcmf_sdioh_stop(struct sdioh_info *si) |
| { |
| return 0; |
| } |