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190 lines
5.4 KiB
190 lines
5.4 KiB
From a7c3aa1509e243a09c5b1660c8702d792ca76aed 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 13:10:31 +0100
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Subject: [PATCH] brcmfmac: Remove brcmf_sdiod_addrprep()
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This function has become trivial enough that it may as well be pushed into
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its callers, which has the side-benefit of clarifying what's going on.
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Remove it, and rename brcmf_sdiod_set_sbaddr_window() to
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brcmf_sdiod_set_backplane_window() as it's easier to understand.
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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 | 84 ++++++++++++----------
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1 file changed, 46 insertions(+), 38 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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@@ -230,41 +230,25 @@ void brcmf_sdiod_change_state(struct brc
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sdiodev->state = state;
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}
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-static int brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev,
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- u32 address)
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+static int brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev *sdiodev,
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+ u32 addr)
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{
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+ u32 v, bar0 = addr & SBSDIO_SBWINDOW_MASK;
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int err = 0, i;
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- u32 addr;
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- if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
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- return -ENOMEDIUM;
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+ if (bar0 == sdiodev->sbwad)
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+ return 0;
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- addr = (address & SBSDIO_SBWINDOW_MASK) >> 8;
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+ v = bar0 >> 8;
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- for (i = 0 ; i < 3 && !err ; i++, addr >>= 8)
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+ for (i = 0 ; i < 3 && !err ; i++, v >>= 8)
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brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i,
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- addr & 0xff, &err);
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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_addrprep(struct brcmf_sdio_dev *sdiodev, u32 *addr)
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-{
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- uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
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- int err = 0;
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-
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- if (bar0 != sdiodev->sbwad) {
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- err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
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- if (err)
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- return err;
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+ v & 0xff, &err);
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+ if (!err)
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sdiodev->sbwad = bar0;
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- }
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-
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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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- return 0;
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+ return err;
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}
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u32 brcmf_sdiod_readl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
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@@ -272,11 +256,16 @@ u32 brcmf_sdiod_readl(struct brcmf_sdio_
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u32 data = 0;
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int retval;
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- retval = brcmf_sdiod_addrprep(sdiodev, &addr);
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+ retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
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+ if (retval)
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+ goto out;
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+
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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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- if (!retval)
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- data = sdio_readl(sdiodev->func[1], addr, &retval);
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+ data = sdio_readl(sdiodev->func[1], addr, &retval);
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+out:
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if (ret)
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*ret = retval;
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@@ -288,11 +277,16 @@ void brcmf_sdiod_writel(struct brcmf_sdi
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{
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int retval;
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- retval = brcmf_sdiod_addrprep(sdiodev, &addr);
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+ retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
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+ if (retval)
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+ goto out;
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+
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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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- if (!retval)
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- sdio_writel(sdiodev->func[1], data, addr, &retval);
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+ sdio_writel(sdiodev->func[1], data, addr, &retval);
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+out:
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if (ret)
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*ret = retval;
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}
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@@ -540,10 +534,13 @@ int brcmf_sdiod_recv_pkt(struct brcmf_sd
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brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
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- err = brcmf_sdiod_addrprep(sdiodev, &addr);
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+ err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
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if (err)
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goto done;
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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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+
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err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr, pkt);
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done:
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@@ -561,10 +558,13 @@ int brcmf_sdiod_recv_chain(struct brcmf_
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brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
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addr, pktq->qlen);
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- err = brcmf_sdiod_addrprep(sdiodev, &addr);
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+ err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
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if (err)
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goto done;
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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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+
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if (pktq->qlen == 1)
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err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr,
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pktq->next);
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@@ -606,7 +606,12 @@ int brcmf_sdiod_send_buf(struct brcmf_sd
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memcpy(mypkt->data, buf, nbytes);
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- err = brcmf_sdiod_addrprep(sdiodev, &addr);
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+ err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
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+ if (err)
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+ return err;
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+
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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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if (!err)
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err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_2, addr, mypkt);
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@@ -625,10 +630,13 @@ int brcmf_sdiod_send_pkt(struct brcmf_sd
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brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
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- err = brcmf_sdiod_addrprep(sdiodev, &addr);
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+ err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
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if (err)
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return err;
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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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+
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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_buff_write(sdiodev, SDIO_FUNC_2,
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@@ -673,7 +681,7 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev
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/* Do the transfer(s) */
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while (size) {
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/* Set the backplane window to include the start address */
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- err = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
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+ err = brcmf_sdiod_set_backplane_window(sdiodev, address);
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if (err)
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break;
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@@ -716,7 +724,7 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev
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dev_kfree_skb(pkt);
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/* Return the window to backplane enumeration space for core access */
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- if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
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+ if (brcmf_sdiod_set_backplane_window(sdiodev, sdiodev->sbwad))
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brcmf_err("FAILED to set window back to 0x%x\n",
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sdiodev->sbwad);
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