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@xxxxxxxxxxxxxx>
---
.../wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 78 ++++++++++++----------
1 file changed, 43 insertions(+), 35 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
index 13f20b58d34e..eb388b69418a 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -229,41 +229,23 @@ void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
}
static int
-brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
+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;
-
- addr = (address & SBSDIO_SBWINDOW_MASK) >> 8;
+ if (bar0 == sdiodev->sbwad)
+ return 0;
- for ( i = 0 ; i < 3 && !err ; i++, addr >>= 8 )
- brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i, addr & 0xff,
- &err);
+ v = bar0 >> 8;
- 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;
+ for (i = 0 ; i < 3 && !err ; i++, v>>=8)
+ brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i, v & 0xff, &err);
+ if(!err)
sdiodev->sbwad = bar0;
- }
-
- *addr &= SBSDIO_SB_OFT_ADDR_MASK;
- *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
- return 0;
+ return err;
}
u32 brcmf_sdiod_readl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
@@ -271,11 +253,17 @@ 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;
+
+ addr &= SBSDIO_SB_OFT_ADDR_MASK;
+ addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
if (!retval)
data = sdio_readl(sdiodev->func[1], addr, &retval);
+out:
if (ret)
*ret = retval;
@@ -287,11 +275,17 @@ 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;
+
+ addr &= SBSDIO_SB_OFT_ADDR_MASK;
+ addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
if (!retval)
sdio_writel(sdiodev->func[1], data, addr, &retval);
+out:
if (ret)
*ret = retval;
}
@@ -539,10 +533,13 @@ 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:
@@ -560,10 +557,13 @@ 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);
@@ -605,7 +605,12 @@ 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,
@@ -672,7 +680,7 @@ 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);
--
2.11.0
