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143 lines
4.2 KiB
143 lines
4.2 KiB
From 8f13c87ccc495e30de5f58bbda967f6edd5bec53 Mon Sep 17 00:00:00 2001
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From: Ian Molton <ian@mnementh.co.uk>
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Date: Fri, 8 Dec 2017 13:10:26 +0100
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Subject: [PATCH] brcmfmac: Split brcmf_sdiod_buffrw function up.
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This function needs to be split up into separate read / write variants
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for clarity.
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Signed-off-by: Ian Molton <ian@mnementh.co.uk>
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Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 67 +++++++++++++++-------
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1 file changed, 45 insertions(+), 22 deletions(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
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@@ -414,8 +414,8 @@ void brcmf_sdiod_regwl(struct brcmf_sdio
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*ret = retval;
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}
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-static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
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- bool write, u32 addr, struct sk_buff *pkt)
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+static int brcmf_sdiod_buff_read(struct brcmf_sdio_dev *sdiodev, uint fn,
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+ u32 addr, struct sk_buff *pkt)
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{
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unsigned int req_sz;
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int err;
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@@ -424,18 +424,36 @@ static int brcmf_sdiod_buffrw(struct brc
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req_sz = pkt->len + 3;
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req_sz &= (uint)~3;
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- if (write)
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- err = sdio_memcpy_toio(sdiodev->func[fn], addr,
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- ((u8 *)(pkt->data)), req_sz);
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- else if (fn == 1)
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- err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
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- addr, req_sz);
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+ if (fn == 1)
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+ err = sdio_memcpy_fromio(sdiodev->func[fn],
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+ ((u8 *)(pkt->data)), addr, req_sz);
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else
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/* function 2 read is FIFO operation */
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- err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
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- req_sz);
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+ err = sdio_readsb(sdiodev->func[fn],
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+ ((u8 *)(pkt->data)), addr, req_sz);
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+
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+ if (err == -ENOMEDIUM)
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+ brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
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+
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+ return err;
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+}
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+
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+static int brcmf_sdiod_buff_write(struct brcmf_sdio_dev *sdiodev, uint fn,
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+ u32 addr, struct sk_buff *pkt)
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+{
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+ unsigned int req_sz;
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+ int err;
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+
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+ /* Single skb use the standard mmc interface */
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+ req_sz = pkt->len + 3;
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+ req_sz &= (uint)~3;
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+
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+ err = sdio_memcpy_toio(sdiodev->func[fn], addr,
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+ ((u8 *)(pkt->data)), req_sz);
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+
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if (err == -ENOMEDIUM)
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brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
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+
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return err;
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}
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@@ -643,7 +661,7 @@ int brcmf_sdiod_recv_pkt(struct brcmf_sd
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if (err)
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goto done;
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- err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
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+ err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr, pkt);
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done:
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return err;
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@@ -665,14 +683,14 @@ int brcmf_sdiod_recv_chain(struct brcmf_
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goto done;
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if (pktq->qlen == 1)
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- err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
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- pktq->next);
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+ err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr,
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+ pktq->next);
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else if (!sdiodev->sg_support) {
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glom_skb = brcmu_pkt_buf_get_skb(totlen);
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if (!glom_skb)
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return -ENOMEM;
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- err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
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- glom_skb);
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+ err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr,
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+ glom_skb);
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if (err)
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goto done;
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@@ -707,8 +725,7 @@ int brcmf_sdiod_send_buf(struct brcmf_sd
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err = brcmf_sdiod_addrprep(sdiodev, &addr);
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if (!err)
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- err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
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- mypkt);
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+ err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_2, addr, mypkt);
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brcmu_pkt_buf_free_skb(mypkt);
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return err;
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@@ -730,8 +747,8 @@ int brcmf_sdiod_send_pkt(struct brcmf_sd
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if (pktq->qlen == 1 || !sdiodev->sg_support)
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skb_queue_walk(pktq, skb) {
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- err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
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- addr, skb);
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+ err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_2,
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+ addr, skb);
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if (err)
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break;
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}
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@@ -783,10 +800,16 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev
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sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
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skb_put(pkt, dsize);
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- if (write)
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+
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+ if (write) {
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memcpy(pkt->data, data, dsize);
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- err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, sdaddr,
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- pkt);
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+ err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_1,
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+ sdaddr, pkt);
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+ } else {
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+ err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_1,
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+ sdaddr, pkt);
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+ }
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+
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if (err) {
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brcmf_err("membytes transfer failed\n");
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break;
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