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brcmfmac: replace brcmf_sdioh_request_buffer with brcmf_sdio_buffrw
Introducing a new SDIO block data access interface function brcmf_sdio_buffrw. It will act as a unified interface function for any block data access to WiFi dongle through SDIO interface. This patch enables the support for single skb transmission. Reviewed-by: Hante Meuleman <meuleman@broadcom.com> Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> Reviewed-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Franky Lin <frankyl@broadcom.com> Signed-off-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Franky Lin
John W. Linville
parent
16035d51b3
commit
78b3f1c5be
@ -303,6 +303,49 @@ void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
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*ret = retval;
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}
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/**
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* brcmf_sdio_buffrw - SDIO interface function for block data access
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* @sdiodev: brcmfmac sdio device
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* @fn: SDIO function number
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* @write: direction flag
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* @addr: dongle memory address as source/destination
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* @pkt: skb pointer
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*
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* This function takes the respbonsibility as the interface function to MMC
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* stack for block data access. It assumes that the skb passed down by the
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* caller has already been padded and aligned.
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*/
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static int brcmf_sdio_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
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bool write, u32 addr, struct sk_buff *pkt)
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{
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uint len;
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brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
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if (brcmf_pm_resume_error(sdiodev))
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return -EIO;
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/* Single skb use the standard mmc interface */
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if (!pkt->next) {
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len = pkt->len + 3;
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len &= (uint)~3;
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if (write)
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return sdio_memcpy_toio(sdiodev->func[fn], addr,
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((u8 *)(pkt->data)), len);
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else if (fn == 1)
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return sdio_memcpy_fromio(sdiodev->func[fn],
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((u8 *)(pkt->data)), addr,
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len);
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else
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/* function 2 read is FIFO operation */
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return sdio_readsb(sdiodev->func[fn],
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((u8 *)(pkt->data)), addr, len);
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}
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brcmf_err("skb chain is not supported yet.\n");
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return -EOPNOTSUPP;
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}
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static int brcmf_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn,
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uint flags, uint width, u32 *addr)
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{
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@ -355,7 +398,6 @@ int
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brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
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uint flags, struct sk_buff *pkt)
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{
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uint incr_fix;
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uint width;
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int err = 0;
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@ -367,9 +409,7 @@ brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
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if (err)
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goto done;
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incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
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err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ,
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fn, addr, pkt);
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err = brcmf_sdio_buffrw(sdiodev, fn, false, addr, pkt);
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done:
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return err;
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@ -424,7 +464,6 @@ int
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brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
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uint flags, struct sk_buff *pkt)
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{
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uint incr_fix;
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uint width;
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uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
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int err = 0;
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@ -446,13 +485,11 @@ brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
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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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if (width == 4)
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addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
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err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn,
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addr, pkt);
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err = brcmf_sdio_buffrw(sdiodev, fn, true, addr, pkt);
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done:
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return err;
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@ -501,9 +538,8 @@ brcmf_sdio_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
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skb_put(pkt, dsize);
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if (write)
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memcpy(pkt->data, data, dsize);
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bcmerror = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC,
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write, SDIO_FUNC_1,
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sdaddr, pkt);
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bcmerror = brcmf_sdio_buffrw(sdiodev, SDIO_FUNC_1, write,
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sdaddr, pkt);
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if (bcmerror) {
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brcmf_err("membytes transfer failed\n");
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break;
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@ -66,7 +66,7 @@ MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
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static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
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static bool
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bool
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brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
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{
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bool is_err = false;
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@ -76,7 +76,7 @@ brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
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return is_err;
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}
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static void
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void
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brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
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{
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#ifdef CONFIG_PM_SLEEP
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@ -283,43 +283,6 @@ brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
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return err_ret;
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}
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/*
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* This function takes a single DMA-able packet.
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*/
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int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
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uint fix_inc, uint write, uint func, uint addr,
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struct sk_buff *pkt)
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{
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int status;
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uint pkt_len;
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bool fifo = (fix_inc == SDIOH_DATA_FIX);
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brcmf_dbg(SDIO, "Enter\n");
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if (pkt == NULL)
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return -EINVAL;
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pkt_len = pkt->len;
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brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
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if (brcmf_pm_resume_error(sdiodev))
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return -EIO;
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pkt_len += 3;
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pkt_len &= (uint)~3;
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status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
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addr, pkt, pkt_len);
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if (status) {
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brcmf_err("%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
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write ? "TX" : "RX", pkt, addr, pkt_len, status);
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} else {
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brcmf_dbg(SDIO, "%s xfr'd %p, addr=0x%05x, len=%d\n",
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write ? "TX" : "RX", pkt, addr, pkt_len);
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}
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return status;
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}
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static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
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{
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/* read 24 bits and return valid 17 bit addr */
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@ -274,10 +274,6 @@ brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
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/* read or write any buffer using cmd53 */
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extern int
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brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
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uint fix_inc, uint rw, uint fnc_num, u32 addr,
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struct sk_buff *pkt);
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extern int
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brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
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uint write, uint func, uint addr,
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struct sk_buff_head *pktq);
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@ -291,4 +287,8 @@ extern void brcmf_sdbrcm_disconnect(void *ptr);
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extern void brcmf_sdbrcm_isr(void *arg);
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extern void brcmf_sdbrcm_wd_timer(struct brcmf_sdio *bus, uint wdtick);
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extern void brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev,
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wait_queue_head_t *wq);
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extern bool brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev);
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#endif /* _BRCM_SDH_H_ */
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