diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c new file mode 100644 index 00000000000..bff9dcd6fad --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c @@ -0,0 +1,371 @@ +/* + * 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. + */ +/* ****************** SDIO CARD Interface Functions **************************/ + +#include <linux/types.h> +#include <linux/netdevice.h> +#include <linux/pci.h> +#include <linux/pci_ids.h> +#include <linux/sched.h> +#include <linux/completion.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/sdio_func.h> +#include <linux/mmc/card.h> + +#include <defs.h> +#include <brcm_hw_ids.h> +#include <brcmu_utils.h> +#include <brcmu_wifi.h> +#include <soc.h> +#include "dhd.h" +#include "dhd_bus.h" +#include "dhd_dbg.h" +#include "sdio_host.h" + +#define SDIOH_API_ACCESS_RETRY_LIMIT 2 + +static void brcmf_sdioh_irqhandler(struct sdio_func *func) +{ + struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev); + + brcmf_dbg(TRACE, "***IRQHandler\n"); + + sdio_release_host(func); + + brcmf_sdbrcm_isr(sdiodev->bus); + + sdio_claim_host(func); +} + +int brcmf_sdcard_intr_reg(struct brcmf_sdio_dev *sdiodev) +{ + brcmf_dbg(TRACE, "Entering\n"); + + sdio_claim_host(sdiodev->func[1]); + sdio_claim_irq(sdiodev->func[1], brcmf_sdioh_irqhandler); + sdio_release_host(sdiodev->func[1]); + + return 0; +} + +int brcmf_sdcard_intr_dereg(struct brcmf_sdio_dev *sdiodev) +{ + brcmf_dbg(TRACE, "Entering\n"); + + sdio_claim_host(sdiodev->func[1]); + sdio_release_irq(sdiodev->func[1]); + sdio_release_host(sdiodev->func[1]); + + return 0; +} + +u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr, + int *err) +{ + int status; + s32 retry = 0; + u8 data = 0; + + do { + if (retry) /* wait for 1 ms till bus get settled down */ + udelay(1000); + status = brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, fnc_num, + addr, (u8 *) &data); + } while (status != 0 + && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT)); + if (err) + *err = status; + + brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n", + fnc_num, addr, data); + + return data; +} + +void +brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr, + u8 data, int *err) +{ + int status; + s32 retry = 0; + + do { + if (retry) /* wait for 1 ms till bus get settled down */ + udelay(1000); + status = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, fnc_num, + addr, (u8 *) &data); + } while (status != 0 + && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT)); + if (err) + *err = status; + + brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n", + fnc_num, addr, data); +} + +int +brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) +{ + int err = 0; + brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW, + (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err); + if (!err) + brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_SBADDRMID, + (address >> 16) & SBSDIO_SBADDRMID_MASK, + &err); + if (!err) + brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, + SBSDIO_FUNC1_SBADDRHIGH, + (address >> 24) & SBSDIO_SBADDRHIGH_MASK, + &err); + + return err; +} + +u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size) +{ + int status; + u32 word = 0; + uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK; + + brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr); + + if (bar0 != sdiodev->sbwad) { + if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0)) + return 0xFFFFFFFF; + + sdiodev->sbwad = bar0; + } + + addr &= SBSDIO_SB_OFT_ADDR_MASK; + if (size == 4) + addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + + status = brcmf_sdioh_request_word(sdiodev, SDIOH_READ, SDIO_FUNC_1, + addr, &word, size); + + sdiodev->regfail = (status != 0); + + brcmf_dbg(INFO, "u32data = 0x%x\n", word); + + /* if ok, return appropriately masked word */ + if (status == 0) { + switch (size) { + case sizeof(u8): + return word & 0xff; + case sizeof(u16): + return word & 0xffff; + case sizeof(u32): + return word; + default: + sdiodev->regfail = true; + + } + } + + /* otherwise, bad sdio access or invalid size */ + brcmf_dbg(ERROR, "error reading addr 0x%04x size %d\n", addr, size); + return 0xFFFFFFFF; +} + +u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size, + u32 data) +{ + int status; + uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK; + int err = 0; + + brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint%ddata = 0x%x\n", + addr, size * 8, data); + + if (bar0 != sdiodev->sbwad) { + err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); + if (err) + return err; + + sdiodev->sbwad = bar0; + } + + addr &= SBSDIO_SB_OFT_ADDR_MASK; + if (size == 4) + addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + status = + brcmf_sdioh_request_word(sdiodev, SDIOH_WRITE, SDIO_FUNC_1, + addr, &data, size); + sdiodev->regfail = (status != 0); + + if (status == 0) + return 0; + + brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x size %d\n", + data, addr, size); + return 0xFFFFFFFF; +} + +bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev) +{ + return sdiodev->regfail; +} + +int +brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, + uint flags, + u8 *buf, uint nbytes, struct sk_buff *pkt) +{ + int status; + uint incr_fix; + uint width; + uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK; + int err = 0; + + brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", fn, addr, nbytes); + + /* Async not implemented yet */ + if (flags & SDIO_REQ_ASYNC) + return -ENOTSUPP; + + if (bar0 != sdiodev->sbwad) { + err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); + if (err) + return err; + + sdiodev->sbwad = bar0; + } + + addr &= SBSDIO_SB_OFT_ADDR_MASK; + + incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; + width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; + if (width == 4) + addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + + status = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ, + fn, addr, width, nbytes, buf, pkt); + + return status; +} + +int +brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, + uint flags, u8 *buf, uint nbytes, struct sk_buff *pkt) +{ + uint incr_fix; + uint width; + uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK; + int err = 0; + + brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", fn, addr, nbytes); + + /* Async not implemented yet */ + if (flags & SDIO_REQ_ASYNC) + return -ENOTSUPP; + + if (bar0 != sdiodev->sbwad) { + err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); + if (err) + return err; + + sdiodev->sbwad = bar0; + } + + addr &= SBSDIO_SB_OFT_ADDR_MASK; + + incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; + width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; + if (width == 4) + addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + + return brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn, + addr, width, nbytes, buf, pkt); +} + +int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr, + u8 *buf, uint nbytes) +{ + addr &= SBSDIO_SB_OFT_ADDR_MASK; + addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + + return brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, + (rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1, + addr, 4, nbytes, buf, NULL); +} + +int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn) +{ + char t_func = (char)fn; + brcmf_dbg(TRACE, "Enter\n"); + + /* issue abort cmd52 command through F0 */ + brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0, + SDIO_CCCR_ABORT, &t_func); + + brcmf_dbg(TRACE, "Exit\n"); + return 0; +} + +int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) +{ + u32 regs = 0; + int ret = 0; + + ret = brcmf_sdioh_attach(sdiodev); + if (ret) + goto out; + + regs = SI_ENUM_BASE; + + /* Report the BAR, to fix if needed */ + sdiodev->sbwad = SI_ENUM_BASE; + + /* try to attach to the target device */ + sdiodev->bus = brcmf_sdbrcm_probe(0, 0, 0, 0, regs, sdiodev); + if (!sdiodev->bus) { + brcmf_dbg(ERROR, "device attach failed\n"); + ret = -ENODEV; + goto out; + } + +out: + if (ret) + brcmf_sdio_remove(sdiodev); + + return ret; +} +EXPORT_SYMBOL(brcmf_sdio_probe); + +int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev) +{ + if (sdiodev->bus) { + brcmf_sdbrcm_disconnect(sdiodev->bus); + sdiodev->bus = NULL; + } + + brcmf_sdioh_detach(sdiodev); + + sdiodev->sbwad = 0; + + return 0; +} +EXPORT_SYMBOL(brcmf_sdio_remove); + +void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable) +{ + if (enable) + brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); + else + brcmf_sdbrcm_wd_timer(sdiodev->bus, 0); +} |