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brcmfmac: protect consecutive SDIO access with sdio_claim_host 

Semaphore sdsem is used to protect consecutive memory access
through SDIO bus. Same functionality is provided by sdio_claim_host/
sdio_release_host interface as well. Replace sdsem with
sdio_claim_host.

Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
hifive-unleashed-5.1
Franky Lin 2012-11-05 16:22:24 -08:00 committed by John W. Linville
parent 7cdf57d34c
commit 38b0b0ddee
3 changed files with 82 additions and 71 deletions
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28
drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
View File

@ -84,6 +84,8 @@ int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
return ret;
sdiodev->irq_wake = true;
sdio_claim_host(sdiodev->func[1]);
/* must configure SDIO_CCCR_IENx to enable irq */
data = brcmf_sdio_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
@ -95,6 +97,8 @@ int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev)
data |= SDIO_SEPINT_ACT_HI;
brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
sdio_release_host(sdiodev->func[1]);
return 0;
}
@ -102,8 +106,10 @@ int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev)
{
brcmf_dbg(TRACE, "Entering\n");
sdio_claim_host(sdiodev->func[1]);
brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
sdio_release_host(sdiodev->func[1]);
if (sdiodev->irq_wake) {
disable_irq_wake(sdiodev->irq);
@ -249,9 +255,7 @@ u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
int retval;
brcmf_dbg(INFO, "addr:0x%08x\n", addr);
sdio_claim_host(sdiodev->func[1]);
retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
sdio_release_host(sdiodev->func[1]);
brcmf_dbg(INFO, "data:0x%02x\n", data);
if (ret)
@ -266,9 +270,7 @@ u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
int retval;
brcmf_dbg(INFO, "addr:0x%08x\n", addr);
sdio_claim_host(sdiodev->func[1]);
retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false);
sdio_release_host(sdiodev->func[1]);
brcmf_dbg(INFO, "data:0x%08x\n", data);
if (ret)
@ -283,9 +285,7 @@ void brcmf_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
int retval;
brcmf_dbg(INFO, "addr:0x%08x, data:0x%02x\n", addr, data);
sdio_claim_host(sdiodev->func[1]);
retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
sdio_release_host(sdiodev->func[1]);
if (ret)
*ret = retval;
@ -297,9 +297,7 @@ void brcmf_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
int retval;
brcmf_dbg(INFO, "addr:0x%08x, data:0x%08x\n", addr, data);
sdio_claim_host(sdiodev->func[1]);
retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true);
sdio_release_host(sdiodev->func[1]);
if (ret)
*ret = retval;
@ -364,8 +362,6 @@ brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
fn, addr, pkt->len);
sdio_claim_host(sdiodev->func[1]);
width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
if (err)
@ -376,8 +372,6 @@ brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
fn, addr, pkt);
done:
sdio_release_host(sdiodev->func[1]);
return err;
}
@ -391,8 +385,6 @@ int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n",
fn, addr, pktq->qlen);
sdio_claim_host(sdiodev->func[1]);
width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr);
if (err)
@ -403,8 +395,6 @@ int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
pktq);
done:
sdio_release_host(sdiodev->func[1]);
return err;
}
@ -446,8 +436,6 @@ brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
if (flags & SDIO_REQ_ASYNC)
return -ENOTSUPP;
sdio_claim_host(sdiodev->func[1]);
if (bar0 != sdiodev->sbwad) {
err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
if (err)
@ -467,8 +455,6 @@ brcmf_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
addr, pkt);
done:
sdio_release_host(sdiodev->func[1]);
return err;
}
@ -510,10 +496,8 @@ int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
brcmf_dbg(TRACE, "Enter\n");
/* issue abort cmd52 command through F0 */
sdio_claim_host(sdiodev->func[1]);
brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
SDIO_CCCR_ABORT, &t_func);
sdio_release_host(sdiodev->func[1]);
brcmf_dbg(TRACE, "Exit\n");
return 0;

7
drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c
View File

@ -372,9 +372,7 @@ static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
}
/* Enable Function 1 */
sdio_claim_host(sdiodev->func[1]);
err_ret = sdio_enable_func(sdiodev->func[1]);
sdio_release_host(sdiodev->func[1]);
if (err_ret)
brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
@ -393,16 +391,14 @@ int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
sdiodev->num_funcs = 2;
sdio_claim_host(sdiodev->func[1]);
err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
sdio_release_host(sdiodev->func[1]);
if (err_ret) {
brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
goto out;
}
sdio_claim_host(sdiodev->func[2]);
err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
sdio_release_host(sdiodev->func[2]);
if (err_ret) {
brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
goto out;
@ -411,6 +407,7 @@ int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
brcmf_sdioh_enablefuncs(sdiodev);
out:
sdio_release_host(sdiodev->func[1]);
brcmf_dbg(TRACE, "Done\n");
return err_ret;
}

118
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
View File

@ -584,8 +584,6 @@ struct brcmf_sdio {
struct list_head dpc_tsklst;
spinlock_t dpc_tl_lock;
struct semaphore sdsem;
const struct firmware *firmware;
u32 fw_ptr;
@ -1274,7 +1272,7 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
* read directly into the chained packet, or allocate a large
* packet and and copy into the chain.
*/
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
if (usechain) {
errcode = brcmf_sdcard_recv_chain(bus->sdiodev,
bus->sdiodev->sbwad,
@ -1296,7 +1294,7 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
dlen);
errcode = -1;
}
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
bus->sdcnt.f2rxdata++;
/* On failure, kill the superframe, allow a couple retries */
@ -1305,6 +1303,7 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
dlen, errcode);
bus->sdiodev->bus_if->dstats.rx_errors++;
sdio_claim_host(bus->sdiodev->func[1]);
if (bus->glomerr++ < 3) {
brcmf_sdbrcm_rxfail(bus, true, true);
} else {
@ -1313,6 +1312,7 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
bus->sdcnt.rxglomfail++;
brcmf_sdbrcm_free_glom(bus);
}
sdio_release_host(bus->sdiodev->func[1]);
return 0;
}
@ -1322,8 +1322,10 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
rd_new.seq_num = rxseq;
rd_new.len = dlen;
sdio_claim_host(bus->sdiodev->func[1]);
errcode = -!brcmf_sdio_hdparser(bus, pfirst->data, &rd_new,
BRCMF_SDIO_FT_SUPER);
sdio_release_host(bus->sdiodev->func[1]);
bus->cur_read.len = rd_new.len_nxtfrm << 4;
/* Remove superframe header, remember offset */
@ -1339,9 +1341,11 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
rd_new.len = pnext->len;
rd_new.seq_num = rxseq++;
sdio_claim_host(bus->sdiodev->func[1]);
errcode = -!brcmf_sdio_hdparser(bus, pnext->data,
&rd_new,
BRCMF_SDIO_FT_SUB);
sdio_release_host(bus->sdiodev->func[1]);
brcmf_dbg_hex_dump(BRCMF_GLOM_ON(),
pnext->data, 32, "subframe:\n");
@ -1351,6 +1355,7 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
if (errcode) {
/* Terminate frame on error, request
a couple retries */
sdio_claim_host(bus->sdiodev->func[1]);
if (bus->glomerr++ < 3) {
/* Restore superframe header space */
skb_push(pfirst, sfdoff);
@ -1361,6 +1366,7 @@ static u8 brcmf_sdbrcm_rxglom(struct brcmf_sdio *bus, u8 rxseq)
bus->sdcnt.rxglomfail++;
brcmf_sdbrcm_free_glom(bus);
}
sdio_release_host(bus->sdiodev->func[1]);
bus->cur_read.len = 0;
return 0;
}
@ -1585,7 +1591,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
rd->len_left = rd->len;
/* read header first for unknow frame length */
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
if (!rd->len) {
sdret = brcmf_sdcard_recv_buf(bus->sdiodev,
bus->sdiodev->sbwad,
@ -1598,7 +1604,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
sdret);
bus->sdcnt.rx_hdrfail++;
brcmf_sdbrcm_rxfail(bus, true, true);
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
continue;
}
@ -1608,7 +1614,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
if (!brcmf_sdio_hdparser(bus, bus->rxhdr, rd,
BRCMF_SDIO_FT_NORMAL)) {
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
if (!bus->rxpending)
break;
else
@ -1624,7 +1630,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
rd->len_nxtfrm = 0;
/* treat all packet as event if we don't know */
rd->channel = SDPCM_EVENT_CHANNEL;
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
continue;
}
rd->len_left = rd->len > BRCMF_FIRSTREAD ?
@ -1642,7 +1648,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
bus->sdiodev->bus_if->dstats.rx_dropped++;
brcmf_sdbrcm_rxfail(bus, false,
RETRYCHAN(rd->channel));
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
continue;
}
skb_pull(pkt, head_read);
@ -1651,15 +1657,17 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
sdret = brcmf_sdcard_recv_pkt(bus->sdiodev, bus->sdiodev->sbwad,
SDIO_FUNC_2, F2SYNC, pkt);
bus->sdcnt.f2rxdata++;
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
if (sdret < 0) {
brcmf_dbg(ERROR, "read %d bytes from channel %d failed: %d\n",
rd->len, rd->channel, sdret);
brcmu_pkt_buf_free_skb(pkt);
bus->sdiodev->bus_if->dstats.rx_errors++;
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_rxfail(bus, true,
RETRYCHAN(rd->channel));
sdio_release_host(bus->sdiodev->func[1]);
continue;
}
@ -1670,6 +1678,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
} else {
memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN);
rd_new.seq_num = rd->seq_num;
sdio_claim_host(bus->sdiodev->func[1]);
if (!brcmf_sdio_hdparser(bus, bus->rxhdr, &rd_new,
BRCMF_SDIO_FT_NORMAL)) {
rd->len = 0;
@ -1682,9 +1691,11 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
roundup(rd_new.len, 16) >> 4);
rd->len = 0;
brcmf_sdbrcm_rxfail(bus, true, true);
sdio_release_host(bus->sdiodev->func[1]);
brcmu_pkt_buf_free_skb(pkt);
continue;
}
sdio_release_host(bus->sdiodev->func[1]);
rd->len_nxtfrm = rd_new.len_nxtfrm;
rd->channel = rd_new.channel;
rd->dat_offset = rd_new.dat_offset;
@ -1700,7 +1711,9 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
rd_new.seq_num);
/* Force retry w/normal header read */
rd->len = 0;
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_rxfail(bus, false, true);
sdio_release_host(bus->sdiodev->func[1]);
brcmu_pkt_buf_free_skb(pkt);
continue;
}
@ -1723,7 +1736,9 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
} else {
brcmf_dbg(ERROR, "%s: glom superframe w/o "
"descriptor!\n", __func__);
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_rxfail(bus, false, false);
sdio_release_host(bus->sdiodev->func[1]);
}
/* prepare the descriptor for the next read */
rd->len = rd->len_nxtfrm << 4;
@ -1879,7 +1894,7 @@ static int brcmf_sdbrcm_txpkt(struct brcmf_sdio *bus, struct sk_buff *pkt,
if (len & (ALIGNMENT - 1))
len = roundup(len, ALIGNMENT);
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
ret = brcmf_sdcard_send_pkt(bus->sdiodev, bus->sdiodev->sbwad,
SDIO_FUNC_2, F2SYNC, pkt);
bus->sdcnt.f2txdata++;
@ -1907,7 +1922,7 @@ static int brcmf_sdbrcm_txpkt(struct brcmf_sdio *bus, struct sk_buff *pkt,
}
}
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
if (ret == 0)
bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
@ -1955,11 +1970,11 @@ static uint brcmf_sdbrcm_sendfromq(struct brcmf_sdio *bus, uint maxframes)
/* In poll mode, need to check for other events */
if (!bus->intr && cnt) {
/* Check device status, signal pending interrupt */
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
ret = r_sdreg32(bus, &intstatus,
offsetof(struct sdpcmd_regs,
intstatus));
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
bus->sdcnt.f2txdata++;
if (ret != 0)
break;
@ -1996,7 +2011,7 @@ static void brcmf_sdbrcm_bus_stop(struct device *dev)
bus->watchdog_tsk = NULL;
}
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
/* Enable clock for device interrupts */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
@ -2030,7 +2045,7 @@ static void brcmf_sdbrcm_bus_stop(struct device *dev)
/* Turn off the backplane clock (only) */
brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
/* Clear the data packet queues */
brcmu_pktq_flush(&bus->txq, true, NULL, NULL);
@ -2132,7 +2147,7 @@ static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
brcmf_dbg(TRACE, "Enter\n");
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
/* If waiting for HTAVAIL, check status */
if (bus->clkstate == CLK_PENDING) {
@ -2186,9 +2201,7 @@ static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
/* Pending interrupt indicates new device status */
if (atomic_read(&bus->ipend) > 0) {
atomic_set(&bus->ipend, 0);
sdio_claim_host(bus->sdiodev->func[1]);
err = brcmf_sdio_intr_rstatus(bus);
sdio_release_host(bus->sdiodev->func[1]);
}
/* Start with leftover status bits */
@ -2217,7 +2230,7 @@ static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
intstatus |= brcmf_sdbrcm_hostmail(bus);
}
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
/* Generally don't ask for these, can get CRC errors... */
if (intstatus & I_WR_OOSYNC) {
@ -2265,7 +2278,7 @@ static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
(bus->clkstate == CLK_AVAIL)) {
int i;
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
err = brcmf_sdcard_send_buf(bus->sdiodev, bus->sdiodev->sbwad,
SDIO_FUNC_2, F2SYNC, bus->ctrl_frame_buf,
(u32) bus->ctrl_frame_len);
@ -2299,7 +2312,7 @@ static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
} else {
bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQUENCE_WRAP;
}
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
bus->ctrl_frame_stat = false;
brcmf_sdbrcm_wait_event_wakeup(bus);
}
@ -2329,7 +2342,9 @@ static void brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
if ((bus->clkstate != CLK_PENDING)
&& bus->idletime == BRCMF_IDLE_IMMEDIATE) {
bus->activity = false;
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
sdio_release_host(bus->sdiodev->func[1]);
}
}
@ -2622,9 +2637,9 @@ brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
/* precondition: IS_ALIGNED((unsigned long)frame, 2) */
/* Make sure backplane clock is on */
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
/* Hardware tag: 2 byte len followed by 2 byte ~len check (all LE) */
*(__le16 *) frame = cpu_to_le16((u16) msglen);
@ -2666,9 +2681,9 @@ brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
frame, min_t(u16, len, 16), "TxHdr:\n");
do {
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
ret = brcmf_tx_frame(bus, frame, len);
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
} while (ret < 0 && retries++ < TXRETRIES);
}
@ -2678,9 +2693,9 @@ brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
bus->activity = false;
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, true);
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
} else {
spin_unlock_irqrestore(&bus->dpc_tl_lock, flags);
}
@ -2714,10 +2729,10 @@ static int brcmf_sdio_readshared(struct brcmf_sdio *bus,
* Read last word in socram to determine
* address of sdpcm_shared structure
*/
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
rv = brcmf_sdbrcm_membytes(bus, false, shaddr,
(u8 *)&addr_le, 4);
up(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
if (rv < 0)
return rv;
@ -2736,8 +2751,10 @@ static int brcmf_sdio_readshared(struct brcmf_sdio *bus,
}
/* Read hndrte_shared structure */
sdio_claim_host(bus->sdiodev->func[1]);
rv = brcmf_sdbrcm_membytes(bus, false, addr, (u8 *)&sh_le,
sizeof(struct sdpcm_shared_le));
sdio_release_host(bus->sdiodev->func[1]);
if (rv < 0)
return rv;
@ -2840,14 +2857,14 @@ static int brcmf_sdio_trap_info(struct brcmf_sdio *bus, struct sdpcm_shared *sh,
if ((sh->flags & SDPCM_SHARED_TRAP) == 0)
return 0;
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
error = brcmf_sdbrcm_membytes(bus, false, sh->trap_addr, (u8 *)&tr,
sizeof(struct brcmf_trap_info));
if (error < 0)
return error;
nbytes = brcmf_sdio_dump_console(bus, sh, data, count);
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
if (nbytes < 0)
return nbytes;
@ -2893,7 +2910,7 @@ static int brcmf_sdio_assert_info(struct brcmf_sdio *bus,
return 0;
}
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
if (sh->assert_file_addr != 0) {
error = brcmf_sdbrcm_membytes(bus, false, sh->assert_file_addr,
(u8 *)file, 80);
@ -2906,7 +2923,7 @@ static int brcmf_sdio_assert_info(struct brcmf_sdio *bus,
if (error < 0)
return error;
}
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
res = scnprintf(buf, sizeof(buf),
"dongle assert: %s:%d: assert(%s)\n",
@ -3366,13 +3383,16 @@ brcmf_sdbrcm_download_firmware(struct brcmf_sdio *bus)
{
bool ret;
/* Download the firmware */
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
ret = _brcmf_sdbrcm_download_firmware(bus) == 0;
brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
sdio_release_host(bus->sdiodev->func[1]);
return ret;
}
@ -3401,7 +3421,7 @@ static int brcmf_sdbrcm_bus_init(struct device *dev)
bus->sdcnt.tickcnt = 0;
brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS);
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
/* Make sure backplane clock is on, needed to generate F2 interrupt */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
@ -3470,7 +3490,7 @@ static int brcmf_sdbrcm_bus_init(struct device *dev)
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
exit:
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
return ret;
}
@ -3533,9 +3553,11 @@ static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus)
u8 devpend;
spin_unlock_irqrestore(&bus->dpc_tl_lock,
flags);
sdio_claim_host(bus->sdiodev->func[1]);
devpend = brcmf_sdio_regrb(bus->sdiodev,
SDIO_CCCR_INTx,
NULL);
sdio_release_host(bus->sdiodev->func[1]);
intstatus =
devpend & (INTR_STATUS_FUNC1 |
INTR_STATUS_FUNC2);
@ -3565,13 +3587,13 @@ static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus)
bus->console.count += BRCMF_WD_POLL_MS;
if (bus->console.count >= bus->console_interval) {
bus->console.count -= bus->console_interval;
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
/* Make sure backplane clock is on */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
if (brcmf_sdbrcm_readconsole(bus) < 0)
/* stop on error */
bus->console_interval = 0;
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
}
}
#endif /* DEBUG */
@ -3584,9 +3606,9 @@ static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus)
bus->activity = false;
brcmf_sdbrcm_wd_timer(bus, BRCMF_WD_POLL_MS);
} else {
down(&bus->sdsem);
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
up(&bus->sdsem);
sdio_release_host(bus->sdiodev->func[1]);
}
}
}
@ -3685,6 +3707,8 @@ brcmf_sdbrcm_probe_attach(struct brcmf_sdio *bus, u32 regsva)
bus->alp_only = true;
sdio_claim_host(bus->sdiodev->func[1]);
pr_debug("F1 signature read @0x18000000=0x%4x\n",
brcmf_sdio_regrl(bus->sdiodev, SI_ENUM_BASE, NULL));
@ -3732,6 +3756,8 @@ brcmf_sdbrcm_probe_attach(struct brcmf_sdio *bus, u32 regsva)
reg_val = brcmf_sdio_regrl(bus->sdiodev, reg_addr, NULL);
brcmf_sdio_regwl(bus->sdiodev, reg_addr, reg_val | CC_BPRESEN, NULL);
sdio_release_host(bus->sdiodev->func[1]);
brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN);
/* Locate an appropriately-aligned portion of hdrbuf */
@ -3747,6 +3773,7 @@ brcmf_sdbrcm_probe_attach(struct brcmf_sdio *bus, u32 regsva)
return true;
fail:
sdio_release_host(bus->sdiodev->func[1]);
return false;
}
@ -3754,6 +3781,8 @@ static bool brcmf_sdbrcm_probe_init(struct brcmf_sdio *bus)
{
brcmf_dbg(TRACE, "Enter\n");
sdio_claim_host(bus->sdiodev->func[1]);
/* Disable F2 to clear any intermediate frame state on the dongle */
brcmf_sdio_regwb(bus->sdiodev, SDIO_CCCR_IOEx,
SDIO_FUNC_ENABLE_1, NULL);
@ -3764,6 +3793,8 @@ static bool brcmf_sdbrcm_probe_init(struct brcmf_sdio *bus)
/* Done with backplane-dependent accesses, can drop clock... */
brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL);
sdio_release_host(bus->sdiodev->func[1]);
/* ...and initialize clock/power states */
bus->clkstate = CLK_SDONLY;
bus->idletime = BRCMF_IDLE_INTERVAL;
@ -3819,8 +3850,10 @@ static void brcmf_sdbrcm_release_dongle(struct brcmf_sdio *bus)
brcmf_dbg(TRACE, "Enter\n");
if (bus->ci) {
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
brcmf_sdbrcm_clkctl(bus, CLK_NONE, false);
sdio_release_host(bus->sdiodev->func[1]);
brcmf_sdio_chip_detach(&bus->ci);
if (bus->vars && bus->varsz)
kfree(bus->vars);
@ -3905,9 +3938,6 @@ void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev)
bus->timer.data = (unsigned long)bus;
bus->timer.function = brcmf_sdbrcm_watchdog;
/* Initialize thread based operation and lock */
sema_init(&bus->sdsem, 1);
/* Initialize watchdog thread */
init_completion(&bus->watchdog_wait);
bus->watchdog_tsk = kthread_run(brcmf_sdbrcm_watchdog_thread,