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* Copyright (c) 2010 Broadcom Corporation
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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/* ****************** BCMSDH Interface Functions *************************** */
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#include <linux/types.h>
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#include <linux/netdevice.h>
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#include <linux/pci_ids.h>
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#include <bcmsdh.h> /* BRCM API for SDIO
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clients (such as wl, dhd) */
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#include <bcmsdbus.h> /* common SDIO/controller interface */
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#include <sbsdio.h> /* BRCM sdio device core */
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#include <sdio.h> /* sdio spec */
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#include "dngl_stats.h"
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#define SDIOH_API_ACCESS_RETRY_LIMIT 2
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const uint bcmsdh_msglevel = BCMSDH_ERROR_VAL;
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bool init_success; /* underlying driver successfully attached */
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void *sdioh; /* handler for sdioh */
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u32 vendevid; /* Target Vendor and Device ID on SD bus */
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bool regfail; /* Save status of last
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reg_read/reg_write call */
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u32 sbwad; /* Save backplane window address */
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/* local copy of bcm sd handler */
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bcmsdh_info_t *l_bcmsdh;
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#if defined(OOB_INTR_ONLY) && defined(HW_OOB)
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extern int sdioh_enable_hw_oob_intr(void *sdioh, bool enable);
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void bcmsdh_enable_hw_oob_intr(bcmsdh_info_t *sdh, bool enable)
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sdioh_enable_hw_oob_intr(sdh->sdioh, enable);
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bcmsdh_info_t *bcmsdh_attach(void *cfghdl, void **regsva, uint irq)
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bcmsdh_info_t *bcmsdh;
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bcmsdh = kzalloc(sizeof(bcmsdh_info_t), GFP_ATOMIC);
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BCMSDH_ERROR(("bcmsdh_attach: out of memory"));
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/* save the handler locally */
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bcmsdh->sdioh = sdioh_attach(cfghdl, irq);
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bcmsdh_detach(bcmsdh);
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bcmsdh->init_success = true;
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*regsva = (u32 *) SI_ENUM_BASE;
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/* Report the BAR, to fix if needed */
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bcmsdh->sbwad = SI_ENUM_BASE;
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int bcmsdh_detach(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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sdioh_detach(bcmsdh->sdioh);
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bcmsdh_iovar_op(void *sdh, const char *name,
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void *params, int plen, void *arg, int len, bool set)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return sdioh_iovar_op(bcmsdh->sdioh, name, params, plen, arg, len, set);
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bool bcmsdh_intr_query(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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status = sdioh_interrupt_query(bcmsdh->sdioh, &on);
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if (SDIOH_API_SUCCESS(status))
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int bcmsdh_intr_enable(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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status = sdioh_interrupt_set(bcmsdh->sdioh, true);
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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int bcmsdh_intr_disable(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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status = sdioh_interrupt_set(bcmsdh->sdioh, false);
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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int bcmsdh_intr_reg(void *sdh, bcmsdh_cb_fn_t fn, void *argh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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status = sdioh_interrupt_register(bcmsdh->sdioh, fn, argh);
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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int bcmsdh_intr_dereg(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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status = sdioh_interrupt_deregister(bcmsdh->sdioh);
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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#if defined(DHD_DEBUG)
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bool bcmsdh_intr_pending(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return sdioh_interrupt_pending(bcmsdh->sdioh);
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int bcmsdh_devremove_reg(void *sdh, bcmsdh_cb_fn_t fn, void *argh)
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/* don't support yet */
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u8 bcmsdh_cfg_read(void *sdh, uint fnc_num, u32 addr, int *err)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
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ASSERT(bcmsdh->init_success);
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#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
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if (retry) /* wait for 1 ms till bus get settled down */
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sdioh_cfg_read(bcmsdh->sdioh, fnc_num, addr,
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#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
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} while (!SDIOH_API_SUCCESS(status)
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&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
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*err = (SDIOH_API_SUCCESS(status) ? 0 : -EIO);
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BCMSDH_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
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__func__, fnc_num, addr, data));
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bcmsdh_cfg_write(void *sdh, uint fnc_num, u32 addr, u8 data, int *err)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
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ASSERT(bcmsdh->init_success);
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#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
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if (retry) /* wait for 1 ms till bus get settled down */
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sdioh_cfg_write(bcmsdh->sdioh, fnc_num, addr,
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#ifdef SDIOH_API_ACCESS_RETRY_LIMIT
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} while (!SDIOH_API_SUCCESS(status)
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&& (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
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*err = SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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BCMSDH_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
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__func__, fnc_num, addr, data));
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u32 bcmsdh_cfg_read_word(void *sdh, uint fnc_num, u32 addr, int *err)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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ASSERT(bcmsdh->init_success);
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sdioh_request_word(bcmsdh->sdioh, SDIOH_CMD_TYPE_NORMAL, SDIOH_READ,
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fnc_num, addr, &data, 4);
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*err = (SDIOH_API_SUCCESS(status) ? 0 : -EIO);
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BCMSDH_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
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__func__, fnc_num, addr, data));
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bcmsdh_cfg_write_word(void *sdh, uint fnc_num, u32 addr, u32 data,
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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ASSERT(bcmsdh->init_success);
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sdioh_request_word(bcmsdh->sdioh, SDIOH_CMD_TYPE_NORMAL,
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SDIOH_WRITE, fnc_num, addr, &data, 4);
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*err = (SDIOH_API_SUCCESS(status) ? 0 : -EIO);
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BCMSDH_INFO(("%s:fun = %d, addr = 0x%x, u32data = 0x%x\n",
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__func__, fnc_num, addr, data));
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int bcmsdh_cis_read(void *sdh, uint func, u8 * cis, uint length)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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u8 *tmp_buf, *tmp_ptr;
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bool ascii = func & ~0xf;
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ASSERT(bcmsdh->init_success);
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ASSERT(length <= SBSDIO_CIS_SIZE_LIMIT);
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status = sdioh_cis_read(bcmsdh->sdioh, func, cis, length);
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/* Move binary bits to tmp and format them
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into the provided buffer. */
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tmp_buf = kmalloc(length, GFP_ATOMIC);
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if (tmp_buf == NULL) {
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BCMSDH_ERROR(("%s: out of memory\n", __func__));
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memcpy(tmp_buf, cis, length);
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for (tmp_ptr = tmp_buf, ptr = cis; ptr < (cis + length - 4);
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ptr += sprintf((char *)ptr, "%.2x ", *tmp_ptr & 0xff);
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if ((((tmp_ptr - tmp_buf) + 1) & 0xf) == 0)
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ptr += sprintf((char *)ptr, "\n");
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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static int bcmsdhsdio_set_sbaddr_window(void *sdh, u32 address)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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bcmsdh_cfg_write(bcmsdh, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
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(address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
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bcmsdh_cfg_write(bcmsdh, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRMID,
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(address >> 16) & SBSDIO_SBADDRMID_MASK, &err);
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bcmsdh_cfg_write(bcmsdh, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRHIGH,
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(address >> 24) & SBSDIO_SBADDRHIGH_MASK,
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u32 bcmsdh_reg_read(void *sdh, u32 addr, uint size)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
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BCMSDH_INFO(("%s:fun = 1, addr = 0x%x, ", __func__, addr));
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ASSERT(bcmsdh->init_success);
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if (bar0 != bcmsdh->sbwad) {
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if (bcmsdhsdio_set_sbaddr_window(bcmsdh, bar0))
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bcmsdh->sbwad = bar0;
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addr &= SBSDIO_SB_OFT_ADDR_MASK;
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addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
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status = sdioh_request_word(bcmsdh->sdioh, SDIOH_CMD_TYPE_NORMAL,
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SDIOH_READ, SDIO_FUNC_1, addr, &word, size);
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bcmsdh->regfail = !(SDIOH_API_SUCCESS(status));
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BCMSDH_INFO(("u32data = 0x%x\n", word));
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/* if ok, return appropriately masked word */
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if (SDIOH_API_SUCCESS(status)) {
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return word & 0xffff;
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bcmsdh->regfail = true;
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/* otherwise, bad sdio access or invalid size */
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BCMSDH_ERROR(("%s: error reading addr 0x%04x size %d\n", __func__,
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u32 bcmsdh_reg_write(void *sdh, u32 addr, uint size, u32 data)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
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BCMSDH_INFO(("%s:fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
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__func__, addr, size * 8, data));
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ASSERT(bcmsdh->init_success);
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if (bar0 != bcmsdh->sbwad) {
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err = bcmsdhsdio_set_sbaddr_window(bcmsdh, bar0);
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bcmsdh->sbwad = bar0;
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addr &= SBSDIO_SB_OFT_ADDR_MASK;
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addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
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sdioh_request_word(bcmsdh->sdioh, SDIOH_CMD_TYPE_NORMAL,
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SDIOH_WRITE, SDIO_FUNC_1, addr, &data, size);
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bcmsdh->regfail = !(SDIOH_API_SUCCESS(status));
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if (SDIOH_API_SUCCESS(status))
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BCMSDH_ERROR(("%s: error writing 0x%08x to addr 0x%04x size %d\n",
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__func__, data, addr, size));
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bool bcmsdh_regfail(void *sdh)
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return ((bcmsdh_info_t *) sdh)->regfail;
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bcmsdh_recv_buf(void *sdh, u32 addr, uint fn, uint flags,
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u8 *buf, uint nbytes, struct sk_buff *pkt,
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bcmsdh_cmplt_fn_t complete, void *handle)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
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ASSERT(bcmsdh->init_success);
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BCMSDH_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
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__func__, fn, addr, nbytes));
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/* Async not implemented yet */
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ASSERT(!(flags & SDIO_REQ_ASYNC));
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if (flags & SDIO_REQ_ASYNC)
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if (bar0 != bcmsdh->sbwad) {
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err = bcmsdhsdio_set_sbaddr_window(bcmsdh, bar0);
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bcmsdh->sbwad = bar0;
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addr &= SBSDIO_SB_OFT_ADDR_MASK;
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incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
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width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
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addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
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status = sdioh_request_buffer(bcmsdh->sdioh, SDIOH_DATA_PIO, incr_fix,
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SDIOH_READ, fn, addr, width, nbytes, buf,
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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bcmsdh_send_buf(void *sdh, u32 addr, uint fn, uint flags,
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u8 *buf, uint nbytes, void *pkt,
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bcmsdh_cmplt_fn_t complete, void *handle)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
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ASSERT(bcmsdh->init_success);
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BCMSDH_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
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__func__, fn, addr, nbytes));
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/* Async not implemented yet */
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ASSERT(!(flags & SDIO_REQ_ASYNC));
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if (flags & SDIO_REQ_ASYNC)
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if (bar0 != bcmsdh->sbwad) {
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err = bcmsdhsdio_set_sbaddr_window(bcmsdh, bar0);
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bcmsdh->sbwad = bar0;
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addr &= SBSDIO_SB_OFT_ADDR_MASK;
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incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
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width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
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addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
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status = sdioh_request_buffer(bcmsdh->sdioh, SDIOH_DATA_PIO, incr_fix,
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SDIOH_WRITE, fn, addr, width, nbytes, buf,
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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int bcmsdh_rwdata(void *sdh, uint rw, u32 addr, u8 *buf, uint nbytes)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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ASSERT(bcmsdh->init_success);
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ASSERT((addr & SBSDIO_SBWINDOW_MASK) == 0);
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addr &= SBSDIO_SB_OFT_ADDR_MASK;
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addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
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sdioh_request_buffer(bcmsdh->sdioh, SDIOH_DATA_PIO, SDIOH_DATA_INC,
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(rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
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addr, 4, nbytes, buf, NULL);
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return SDIOH_API_SUCCESS(status) ? 0 : -EIO;
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int bcmsdh_abort(void *sdh, uint fn)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return sdioh_abort(bcmsdh->sdioh, fn);
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int bcmsdh_start(void *sdh, int stage)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return sdioh_start(bcmsdh->sdioh, stage);
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int bcmsdh_stop(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return sdioh_stop(bcmsdh->sdioh);
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int bcmsdh_query_device(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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bcmsdh->vendevid = (PCI_VENDOR_ID_BROADCOM << 16) | 0;
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return bcmsdh->vendevid;
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uint bcmsdh_query_iofnum(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return sdioh_query_iofnum(bcmsdh->sdioh);
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int bcmsdh_reset(bcmsdh_info_t *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return sdioh_sdio_reset(bcmsdh->sdioh);
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void *bcmsdh_get_sdioh(bcmsdh_info_t *sdh)
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/* Function to pass device-status bits to DHD. */
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u32 bcmsdh_get_dstatus(void *sdh)
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u32 bcmsdh_cur_sbwad(void *sdh)
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bcmsdh_info_t *bcmsdh = (bcmsdh_info_t *) sdh;
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return bcmsdh->sbwad;
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void bcmsdh_chipinfo(void *sdh, u32 chip, u32 chiprev)