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brcmfmac: Remove brcmf_sdiod_addrprep()

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This function has become trivial enough that it may as well be pushed into
its callers, which has the side-benefit of clarifying what's going on.

Remove it, and rename brcmf_sdiod_set_sbaddr_window() to
brcmf_sdiod_set_backplane_window() as it's easier to understand.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Ian Molton 2017-12-08 13:10:31 +01:00 committed by Kalle Valo
parent eeef8a5da7
commit a7c3aa1509
1 changed files with 47 additions and 39 deletions
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86
drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
View File

@ -230,53 +230,42 @@ void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
sdiodev->state = state;
}
static int brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev,
u32 address)
static int brcmf_sdiod_set_backplane_window(struct brcmf_sdio_dev *sdiodev,
u32 addr)
{
u32 v, bar0 = addr & SBSDIO_SBWINDOW_MASK;
int err = 0, i;
u32 addr;
if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
return -ENOMEDIUM;
if (bar0 == sdiodev->sbwad)
return 0;
addr = (address & SBSDIO_SBWINDOW_MASK) >> 8;
v = bar0 >> 8;
for (i = 0 ; i < 3 && !err ; i++, addr >>= 8)
for (i = 0 ; i < 3 && !err ; i++, v >>= 8)
brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i,
addr & 0xff, &err);
v & 0xff, &err);
if (!err)
sdiodev->sbwad = bar0;
return err;
}
static int brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, u32 *addr)
{
uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
int err = 0;
if (bar0 != sdiodev->sbwad) {
err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
if (err)
return err;
sdiodev->sbwad = bar0;
}
*addr &= SBSDIO_SB_OFT_ADDR_MASK;
*addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
return 0;
}
u32 brcmf_sdiod_readl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
{
u32 data = 0;
int retval;
retval = brcmf_sdiod_addrprep(sdiodev, &addr);
retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
if (retval)
goto out;
if (!retval)
data = sdio_readl(sdiodev->func[1], addr, &retval);
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
data = sdio_readl(sdiodev->func[1], addr, &retval);
out:
if (ret)
*ret = retval;
@ -288,11 +277,16 @@ void brcmf_sdiod_writel(struct brcmf_sdio_dev *sdiodev, u32 addr,
{
int retval;
retval = brcmf_sdiod_addrprep(sdiodev, &addr);
retval = brcmf_sdiod_set_backplane_window(sdiodev, addr);
if (retval)
goto out;
if (!retval)
sdio_writel(sdiodev->func[1], data, addr, &retval);
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
sdio_writel(sdiodev->func[1], data, addr, &retval);
out:
if (ret)
*ret = retval;
}
@ -540,10 +534,13 @@ int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
err = brcmf_sdiod_addrprep(sdiodev, &addr);
err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
if (err)
goto done;
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr, pkt);
done:
@ -561,10 +558,13 @@ int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
addr, pktq->qlen);
err = brcmf_sdiod_addrprep(sdiodev, &addr);
err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
if (err)
goto done;
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
if (pktq->qlen == 1)
err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr,
pktq->next);
@ -606,7 +606,12 @@ int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
memcpy(mypkt->data, buf, nbytes);
err = brcmf_sdiod_addrprep(sdiodev, &addr);
err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
if (err)
return err;
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
if (!err)
err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_2, addr, mypkt);
@ -625,10 +630,13 @@ int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
err = brcmf_sdiod_addrprep(sdiodev, &addr);
err = brcmf_sdiod_set_backplane_window(sdiodev, addr);
if (err)
return err;
addr &= SBSDIO_SB_OFT_ADDR_MASK;
addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
if (pktq->qlen == 1 || !sdiodev->sg_support) {
skb_queue_walk(pktq, skb) {
err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_2,
@ -673,7 +681,7 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
/* Do the transfer(s) */
while (size) {
/* Set the backplane window to include the start address */
err = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
err = brcmf_sdiod_set_backplane_window(sdiodev, address);
if (err)
break;
@ -716,7 +724,7 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
dev_kfree_skb(pkt);
/* Return the window to backplane enumeration space for core access */
if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
if (brcmf_sdiod_set_backplane_window(sdiodev, sdiodev->sbwad))
brcmf_err("FAILED to set window back to 0x%x\n",
sdiodev->sbwad);