* Re: issues with RTL8188CE device and rtl8192ce driver
From: Colleen Josephson @ 2013-08-27 23:09 UTC (permalink / raw)
To: Larry Finger; +Cc: linux-wireless
In-Reply-To: <CAN3-2D5+tvQyZKBP3vUwGWdctCcfCeBxAhPsZs+DCLDdr4dyCw@mail.gmail.com>
Any updates? Or addition information that would be useful? I will be
relocating to the other side of the US next week, so I will be unable
to collect more information or traces on this specific network after
then.
^ permalink raw reply
* Re: issues with RTL8188CE device and rtl8192ce driver
From: Larry Finger @ 2013-08-27 23:17 UTC (permalink / raw)
To: Colleen Josephson; +Cc: linux-wireless
In-Reply-To: <CAN3-2D6Cf6Ew2Ar5ZD5ZCamhKF92wnKjgP=dEk15UF1YDXJS5g@mail.gmail.com>
On 08/27/2013 06:09 PM, Colleen Josephson wrote:
> Any updates? Or addition information that would be useful? I will be
> relocating to the other side of the US next week, so I will be unable
> to collect more information or traces on this specific network after
> then.
I have been busy getting a new driver into the kernel before 3.12 comes out. I
am now looking into both rtl8192ce and rtl8192cu. I think I have what I need
from you.
Larry
^ permalink raw reply
* RE: sd8787 (mwifiex) on big endian system
From: Bing Zhao @ 2013-08-27 23:42 UTC (permalink / raw)
To: Tobias Waldekranz; +Cc: linux-wireless@vger.kernel.org
In-Reply-To: <20130827061745.GA19431@gmail.com>
Hi Tobias,
> Hi Bing,
>
> Here is the log output without the added udelay. It is always the 0xd9
> command that fails, but not always with these sdio_ireg/wr_bitmask
> values. I have seen these combinations:
>
> - sdio_ireg incorrect(2), wr_bitmask incorrect(fffe)
> - sdio_ireg correct(3), wr_bitmask incorrect(fffe)
> - sdio_ireg incorrect(2), wr_bitmask correct(ffff)
>
> Waiting 50 us before reading the mp_regs always returns the correct
> response.
Thanks for the logs.
Could you try the following change to bypass 0xd9 command?
diff --git a/drivers/net/wireless/mwifiex/sta_cmd.c b/drivers/net/wireless/mwifi
index c0268b5..3cecc86 100644
--- a/drivers/net/wireless/mwifiex/sta_cmd.c
+++ b/drivers/net/wireless/mwifiex/sta_cmd.c
@@ -1541,6 +1541,7 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8
if (ret)
return -1;
+#if 0
/* Reconfigure tx buf size */
ret = mwifiex_send_cmd_sync(priv,
HostCmd_CMD_RECONFIGURE_TX_BUFF,
@@ -1548,6 +1549,7 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8
&priv->adapter->tx_buf_size);
if (ret)
return -1;
+#endif
if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP) {
/* Enable IEEE PS by default */
Thanks,
Bing
^ permalink raw reply related
* Re: [PATCH 2/2] staging: vt6656: device.h Replace typedef struct _RCB
From: Greg KH @ 2013-08-27 23:57 UTC (permalink / raw)
To: Malcolm Priestley; +Cc: linux-wireless
In-Reply-To: <1377603883.3320.93.camel@canaries32-MCP7A>
On Tue, Aug 27, 2013 at 12:44:43PM +0100, Malcolm Priestley wrote:
> Replace with struct vnt_rcb
>
> Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
> ---
> drivers/staging/vt6656/device.h | 20 +++++++++-----------
> drivers/staging/vt6656/dpc.c | 10 +++++-----
> drivers/staging/vt6656/dpc.h | 4 ++--
> drivers/staging/vt6656/main_usb.c | 14 ++++++++------
> drivers/staging/vt6656/usbpipe.c | 4 ++--
> drivers/staging/vt6656/usbpipe.h | 2 +-
> 6 files changed, 27 insertions(+), 27 deletions(-)
This patch only applies with fuzz, which means we are starting to get
out of sync. Can you refresh this one against my staging-next tree,
which I've applied all of your other patches to, and resend it?
thanks,
greg k-h
^ permalink raw reply
* [PATCH 1/2] cw1200: Display the correct default reference clock.
From: Solomon Peachy @ 2013-08-28 0:17 UTC (permalink / raw)
To: linux-wireless; +Cc: Solomon Peachy
This is purely a cosmetic bug.
Signed-off-by: Solomon Peachy <pizza@shaftnet.org>
---
drivers/net/wireless/cw1200/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/cw1200/main.c b/drivers/net/wireless/cw1200/main.c
index 3724e73..090f015 100644
--- a/drivers/net/wireless/cw1200/main.c
+++ b/drivers/net/wireless/cw1200/main.c
@@ -507,7 +507,7 @@ u32 cw1200_dpll_from_clk(u16 clk_khz)
case 0xCB20: /* 52000 KHz */
return 0x07627091;
default:
- pr_err("Unknown Refclk freq (0x%04x), using 2600KHz\n",
+ pr_err("Unknown Refclk freq (0x%04x), using 26000KHz\n",
clk_khz);
return 0x0EC4F121;
}
--
1.8.3.1
^ permalink raw reply related
* [PATCH 2/2] cw1200: When debug is enabled, display all wakeup conditions for the wait_event_interruptible_timeout() call.
From: Solomon Peachy @ 2013-08-28 0:17 UTC (permalink / raw)
To: linux-wireless; +Cc: Solomon Peachy
In-Reply-To: <1377649033-2091-1-git-send-email-pizza@shaftnet.org>
When trying to debug an interrupt delivery problem I noticed that not
all of the wakeup conditions on the worker thread were included in the
debug message. This patch rectifies that.
Signed-off-by: Solomon Peachy <pizza@shaftnet.org>
---
drivers/net/wireless/cw1200/bh.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/cw1200/bh.c b/drivers/net/wireless/cw1200/bh.c
index c1ec2a4..92d299a 100644
--- a/drivers/net/wireless/cw1200/bh.c
+++ b/drivers/net/wireless/cw1200/bh.c
@@ -465,8 +465,8 @@ static int cw1200_bh(void *arg)
(rx || tx || term || suspend || priv->bh_error);
}), status);
- pr_debug("[BH] - rx: %d, tx: %d, term: %d, suspend: %d, status: %ld\n",
- rx, tx, term, suspend, status);
+ pr_debug("[BH] - rx: %d, tx: %d, term: %d, bh_err: %d, suspend: %d, status: %ld\n",
+ rx, tx, term, suspend, priv->bh_error, status);
/* Did an error occur? */
if ((status < 0 && status != -ERESTARTSYS) ||
--
1.8.3.1
^ permalink raw reply related
* [PATCH 1/2] cw1200: Don't perform SPI transfers in interrupt context
From: Solomon Peachy @ 2013-08-28 0:29 UTC (permalink / raw)
To: linux-wireless; +Cc: Solomon Peachy
When we get an interrupt from the hardware, the first thing the driver does
is tell the device to mask off the interrupt line. Unfortunately this
involves a SPI transaction in interrupt context. Some (most?) SPI
controllers perform the transfer asynchronously and try to sleep.
This is bad, and triggers a BUG().
So, work around this by using adding a hwbus hook for the cw1200 driver
core to call. The cw1200_spi driver translates this into
irq_disable()/irq_enable() calls instead, which can safely be called in
interrupt context.
Apparently the platforms I used to develop the cw1200_spi driver used
synchronous spi_sync() implementations, which is why this didn't surface
until now.
Many thanks to Dave Sizeburns for the inital bug report and his services
as a tester.
Signed-off-by: Solomon Peachy <pizza@shaftnet.org>
---
Please consider this for 3.11-rc; without this patch many SPI users
will immediately trigger a BUG().
drivers/net/wireless/cw1200/cw1200_spi.c | 19 ++++++++++++++++---
drivers/net/wireless/cw1200/fwio.c | 2 +-
drivers/net/wireless/cw1200/hwbus.h | 1 +
drivers/net/wireless/cw1200/hwio.c | 15 +++++++++++++++
4 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/cw1200/cw1200_spi.c b/drivers/net/wireless/cw1200/cw1200_spi.c
index d063760..c31580b 100644
--- a/drivers/net/wireless/cw1200/cw1200_spi.c
+++ b/drivers/net/wireless/cw1200/cw1200_spi.c
@@ -41,6 +41,7 @@ struct hwbus_priv {
const struct cw1200_platform_data_spi *pdata;
spinlock_t lock; /* Serialize all bus operations */
int claimed;
+ int irq_disabled;
};
#define SDIO_TO_SPI_ADDR(addr) ((addr & 0x1f)>>2)
@@ -230,6 +231,8 @@ static irqreturn_t cw1200_spi_irq_handler(int irq, void *dev_id)
struct hwbus_priv *self = dev_id;
if (self->core) {
+ disable_irq_nosync(self->func->irq);
+ self->irq_disabled = 1;
cw1200_irq_handler(self->core);
return IRQ_HANDLED;
} else {
@@ -263,13 +266,22 @@ exit:
static int cw1200_spi_irq_unsubscribe(struct hwbus_priv *self)
{
- int ret = 0;
-
pr_debug("SW IRQ unsubscribe\n");
disable_irq_wake(self->func->irq);
free_irq(self->func->irq, self);
- return ret;
+ return 0;
+}
+
+static int cw1200_spi_irq_enable(struct hwbus_priv *self, int enable)
+{
+ /* Disables are handled by the interrupt handler */
+ if (enable && self->irq_disabled) {
+ enable_irq(self->func->irq);
+ self->irq_disabled = 0;
+ }
+
+ return 0;
}
static int cw1200_spi_off(const struct cw1200_platform_data_spi *pdata)
@@ -349,6 +361,7 @@ static struct hwbus_ops cw1200_spi_hwbus_ops = {
.unlock = cw1200_spi_unlock,
.align_size = cw1200_spi_align_size,
.power_mgmt = cw1200_spi_pm,
+ .irq_enable = cw1200_spi_irq_enable,
};
/* Probe Function to be called by SPI stack when device is discovered */
diff --git a/drivers/net/wireless/cw1200/fwio.c b/drivers/net/wireless/cw1200/fwio.c
index acdff0f..0b2061b 100644
--- a/drivers/net/wireless/cw1200/fwio.c
+++ b/drivers/net/wireless/cw1200/fwio.c
@@ -485,7 +485,7 @@ int cw1200_load_firmware(struct cw1200_common *priv)
/* Enable interrupt signalling */
priv->hwbus_ops->lock(priv->hwbus_priv);
- ret = __cw1200_irq_enable(priv, 1);
+ ret = __cw1200_irq_enable(priv, 2);
priv->hwbus_ops->unlock(priv->hwbus_priv);
if (ret < 0)
goto unsubscribe;
diff --git a/drivers/net/wireless/cw1200/hwbus.h b/drivers/net/wireless/cw1200/hwbus.h
index 8b2fc83..51dfb3a 100644
--- a/drivers/net/wireless/cw1200/hwbus.h
+++ b/drivers/net/wireless/cw1200/hwbus.h
@@ -28,6 +28,7 @@ struct hwbus_ops {
void (*unlock)(struct hwbus_priv *self);
size_t (*align_size)(struct hwbus_priv *self, size_t size);
int (*power_mgmt)(struct hwbus_priv *self, bool suspend);
+ int (*irq_enable)(struct hwbus_priv *self, int enable);
};
#endif /* CW1200_HWBUS_H */
diff --git a/drivers/net/wireless/cw1200/hwio.c b/drivers/net/wireless/cw1200/hwio.c
index ff230b7..41bd761 100644
--- a/drivers/net/wireless/cw1200/hwio.c
+++ b/drivers/net/wireless/cw1200/hwio.c
@@ -273,6 +273,21 @@ int __cw1200_irq_enable(struct cw1200_common *priv, int enable)
u16 val16;
int ret;
+ /* We need to do this hack because the SPI layer can sleep on I/O
+ and the general path involves I/O to the device in interrupt
+ context.
+
+ However, the initial enable call needs to go to the hardware.
+
+ We don't worry about shutdown because we do a full reset which
+ clears the interrupt enabled bits.
+ */
+ if (priv->hwbus_ops->irq_enable) {
+ ret = priv->hwbus_ops->irq_enable(priv->hwbus_priv, enable);
+ if (ret || enable < 2)
+ return ret;
+ }
+
if (HIF_8601_SILICON == priv->hw_type) {
ret = __cw1200_reg_read_32(priv, ST90TDS_CONFIG_REG_ID, &val32);
if (ret < 0) {
--
1.8.3.1
^ permalink raw reply related
* [PATCH 2/2] cw1200: Prevent a lock-related hang in the cw1200_spi driver
From: Solomon Peachy @ 2013-08-28 0:29 UTC (permalink / raw)
To: linux-wireless; +Cc: Solomon Peachy
In-Reply-To: <1377649787-2817-1-git-send-email-pizza@shaftnet.org>
The cw1200_spi driver tries to mirror the cw1200_sdio driver's lock
API, which relies on sdio_claim_host/sdio_release_host to serialize
hardware operations across multiple threads.
Unfortunately the implementation was flawed, as it lacked a way to wake
up the lock requestor when there was contention, often resulting in a
hang.
This problem was uncovered while trying to fix the
spi-transfers-in-interrupt-context BUG() corrected in the previous
patch. Many thanks to Dave Sizeburns for his assistance in fixing this.
Signed-off-by: Solomon Peachy <pizza@shaftnet.org>
---
Please consider this for 3.11-rc; without this patch SPI users are all
but guaranteed to deadlock while running this driver.
drivers/net/wireless/cw1200/cw1200_spi.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/net/wireless/cw1200/cw1200_spi.c b/drivers/net/wireless/cw1200/cw1200_spi.c
index c31580b..f5e6b48 100644
--- a/drivers/net/wireless/cw1200/cw1200_spi.c
+++ b/drivers/net/wireless/cw1200/cw1200_spi.c
@@ -40,6 +40,7 @@ struct hwbus_priv {
struct cw1200_common *core;
const struct cw1200_platform_data_spi *pdata;
spinlock_t lock; /* Serialize all bus operations */
+ wait_queue_head_t wq;
int claimed;
int irq_disabled;
};
@@ -198,8 +199,11 @@ static void cw1200_spi_lock(struct hwbus_priv *self)
{
unsigned long flags;
+ DECLARE_WAITQUEUE(wait, current);
+
might_sleep();
+ add_wait_queue(&self->wq, &wait);
spin_lock_irqsave(&self->lock, flags);
while (1) {
set_current_state(TASK_UNINTERRUPTIBLE);
@@ -212,6 +216,7 @@ static void cw1200_spi_lock(struct hwbus_priv *self)
set_current_state(TASK_RUNNING);
self->claimed = 1;
spin_unlock_irqrestore(&self->lock, flags);
+ remove_wait_queue(&self->wq, &wait);
return;
}
@@ -223,6 +228,8 @@ static void cw1200_spi_unlock(struct hwbus_priv *self)
spin_lock_irqsave(&self->lock, flags);
self->claimed = 0;
spin_unlock_irqrestore(&self->lock, flags);
+ wake_up(&self->wq);
+
return;
}
@@ -413,6 +420,8 @@ static int cw1200_spi_probe(struct spi_device *func)
spi_set_drvdata(func, self);
+ init_waitqueue_head(&self->wq);
+
status = cw1200_spi_irq_subscribe(self);
status = cw1200_core_probe(&cw1200_spi_hwbus_ops,
--
1.8.3.1
^ permalink raw reply related
* Re: [E1000-devel] [PATCH net-next] drivers:net: Convert dma_alloc_coherent(...__GFP_ZERO) to dma_zalloc_coherent
From: Jeff Kirsher @ 2013-08-28 1:44 UTC (permalink / raw)
To: Joe Perches
Cc: netdev, e1000-devel, users, linux-wireless, linux-kernel, b43-dev
In-Reply-To: <1377582323.2658.10.camel@joe-AO722>
[-- Attachment #1: Type: text/plain, Size: 617 bytes --]
On Mon, 2013-08-26 at 22:45 -0700, Joe Perches wrote:
> __GFP_ZERO is an uncommon flag and perhaps is better
> not used. static inline dma_zalloc_coherent exists
> so convert the uses of dma_alloc_coherent with __GFP_ZERO
> to the more common kernel style with zalloc.
>
> Remove memset from the static inline dma_zalloc_coherent
> and add just one use of __GFP_ZERO instead.
>
> Trivially reduces the size of the existing uses of
> dma_zalloc_coherent.
>
> Realign arguments as appropriate.
>
> Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply
* Re: [PATCH v2 0/4] ath10k: fixes
From: Kalle Valo @ 2013-08-28 3:53 UTC (permalink / raw)
To: Luis R. Rodriguez; +Cc: linux-wireless, Michal Kazior, ath10k
In-Reply-To: <20130827080144.GB29102@pogo>
"Luis R. Rodriguez" <rodrigue@qca.qualcomm.com> writes:
>> I disagree. The point of linux-stable is _not_ that we send all possible
>> fixes to stable. Instead we should send fixes only which really matter
>> to users and for which we have received bug reports. I haven't yet seen
>> any fix for ath10k which should be a candidate for stable releases.
>
> You don't need to wait for an issue to happen to consider it serious,
> the description of the symptoms seem pretty bad to me, but its your
> call in the end.
>
>> If we start sending all ath10k fixes to stable it's just extra churn for
>> both Greg and people working on ath10k.
>
> I'm not asking for anything that has the word "fix" to be sent, I'm
> asking them to be reviewed for stable consideration.
I think a good rule is that we should send fixes to stable only if a
user (!= developer) has reported the problem.
--
Kalle Valo
^ permalink raw reply
* Re: [PATCH v2 4/4] ath10k: fix issues on non-preemptible systems
From: Kalle Valo @ 2013-08-28 4:02 UTC (permalink / raw)
To: Michal Kazior; +Cc: ath10k, linux-wireless
In-Reply-To: <CA+BoTQ=ycKd0Z60wHTWHoq7hBz1W2iW+ahjVmc_nFLQmU7-1Bg@mail.gmail.com>
Michal Kazior <michal.kazior@tieto.com> writes:
> On 27 August 2013 09:06, Kalle Valo <kvalo@qca.qualcomm.com> wrote:
>
>> I consider this more as a workaround as a real fix. Would NAPI be a
>> proper fix for issues like this?
>>
>> NAPI support was removed from mac80211 six months ago, but I guess we
>> could try to get it back if we have a good reason:
>>
>> http://marc.info/?l=linux-wireless&m=136204135907491
>
> Hmm. From what I understand NAPI is used for RX polling. My patch
> addresses mainly WMI/HTT TX starvation.
I thought I saw something related to NAPI on TX as well, but I can't
find it anymore.
> There's another solution that I had in mind. Instead of:
>
> for (;;) { dequeue(z); process; }
>
> I did:
>
> q = dequeue_all(z); for (;;) { dequeue(q); process; }
>
> I.e. move all queued stuff at the worker entry and move it out of the
> global queue, that can, and will be, having more stuff queued while
> the worker does its job).
>
> This way workers would exit/restart more often, but from what I tested
> it didn't really solve the problem. Given enough traffic HTC worker
> responsible for HTT TX gets overwhelmed eventually. You could try
> limit how many frames a worker can process during one execution, but
> how do you guess that? This starvation depends on how fast your CPU
> is.
I think we should come up with better ways to handle this. To have a
quota (like you mention above) would be one option. Other option would
be to have multiple queues and some sort of priorisation or fair
queueing.
And most importantly of all, we should minimise the lenght of queue we
have inside ath10k. I'm worried that we queue way too many packets
within ath10k right now.
> Thus I opted for sole cond_resched().
Yeah, this is a good workaround for the problem. But it would be good to
get bottom of this as well.
>>> +#ifndef CONFIG_PREEMPT
>>> + cond_resched();
>>> +#endif
>>
>> Why the #ifndef? Why should we not call cond_resched() when PREEMPT is
>> enabled? Does something negative happen then?
>
> I think it should be okay. I saw the #ifndef thing in b43legacy and
> thought it simply makes sense (although it's unsightly).
For various reasons I would prefer to have cond_resched() without the
#ifndef, if possible.
--
Kalle Valo
^ permalink raw reply
* Re: [PATCH] ath10k: Fix mutex unlock balance
From: Kalle Valo @ 2013-08-28 4:09 UTC (permalink / raw)
To: Mohammed Shafi Shajakhan; +Cc: linux-wireless, ath10k
In-Reply-To: <1377102404-14742-1-git-send-email-mohammed@qca.qualcomm.com>
Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com> writes:
> From: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
>
> ath10k_debug_read_target_stats is properly
> protected by data_lock (spinlock). Remove
> the unwanted mutex_unlock(&ar->conf_mutex)
[...]
>
> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Thanks, applied.
--
Kalle Valo
^ permalink raw reply
* Re: [PATCH v2 1/6] ath10k: use inline ce_state structure
From: Kalle Valo @ 2013-08-28 4:12 UTC (permalink / raw)
To: Michal Kazior; +Cc: ath10k, linux-wireless
In-Reply-To: <1377601683-12072-2-git-send-email-michal.kazior@tieto.com>
Michal Kazior <michal.kazior@tieto.com> writes:
> Simplifies memory managament of ce_state.
>
> Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Sorry, I noticed this only in my second review round:
> --- a/drivers/net/wireless/ath/ath10k/pci.h
> +++ b/drivers/net/wireless/ath/ath10k/pci.h
> @@ -233,7 +233,10 @@ struct ath10k_pci {
> spinlock_t ce_lock;
>
> /* Map CE id to ce_state */
> - struct ce_state *ce_id_to_state[CE_COUNT_MAX];
> + struct ce_state ce_states[CE_COUNT_MAX];
> +
> + /* makes sure that dummy reads are atomic */
> + spinlock_t hw_v1_workaround_lock;
> };
That lock doesn't look right. Is it a leftover from a rebase?
--
Kalle Valo
^ permalink raw reply
* Re: [PATCH v2 1/4] ath10k: synchronize tx/rx reporting to mac80211
From: Kalle Valo @ 2013-08-28 4:23 UTC (permalink / raw)
To: Michal Kazior; +Cc: ath10k, linux-wireless
In-Reply-To: <1377507205-5386-2-git-send-email-michal.kazior@tieto.com>
Michal Kazior <michal.kazior@tieto.com> writes:
> According to mac80211 docs tx and rx reporting
> routines must not run concurrently unless they are
> _irqsafe variants.
>
> This doesn't fix any visible bug but is apparently
> the right thing to do as per the documentation.
>
> Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
I had a quick chat with Johannes and Sujith about this. The concurrency
requirements are for the STA PS race in AP mode (see
ieee80211_handle_filtered_frame()).
I think we should drop this frame, revisit later and properly analyse
how to fix the race. But it would be good add this to the todo list:
http://wireless.kernel.org/en/users/Drivers/ath10k#TODO
--
Kalle Valo
^ permalink raw reply
* Re: Update e-mail address for Andrea Merello
From: Greg KH @ 2013-08-28 5:05 UTC (permalink / raw)
To: Andrea Merello; +Cc: linville, linux-wireless, linux-kernel
In-Reply-To: <1377518010-14767-1-git-send-email-andrea.merello@gmail.com>
On Mon, Aug 26, 2013 at 01:53:30PM +0200, Andrea Merello wrote:
> A lot of files contain reference to my old e-mail address.
> Now I'm going not to read mail from it anymore, so update it
> with my current address everywhere.
>
> Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
I stripped out and took only the drivers/staging/* changes in this
patch. I'd recommend resending all the drivers/net/wireless/ changes to
the linux-wireless@ group again, so they can apply just those changes.
thanks,
greg k-h
^ permalink raw reply
* NGFF based WLAN module
From: Matt Chen @ 2013-08-28 5:27 UTC (permalink / raw)
To: linux-wireless
Hi,
I have a NGFF WLAN module, Intel Wilkins Peak 2, I am wondering how to =
enable it. I found there is nothing from the lspci result. Is there any =
way to enable it in Linux ?
Thanks.
^ permalink raw reply
* Re: [PATCH v2 1/6] ath10k: use inline ce_state structure
From: Michal Kazior @ 2013-08-28 5:32 UTC (permalink / raw)
To: Kalle Valo; +Cc: ath10k, linux-wireless
In-Reply-To: <87y57mjvwu.fsf@kamboji.qca.qualcomm.com>
On 28 August 2013 06:12, Kalle Valo <kvalo@qca.qualcomm.com> wrote:
> Michal Kazior <michal.kazior@tieto.com> writes:
>
>> Simplifies memory managament of ce_state.
>>
>> Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
>
> Sorry, I noticed this only in my second review round:
>
>> --- a/drivers/net/wireless/ath/ath10k/pci.h
>> +++ b/drivers/net/wireless/ath/ath10k/pci.h
>> @@ -233,7 +233,10 @@ struct ath10k_pci {
>> spinlock_t ce_lock;
>>
>> /* Map CE id to ce_state */
>> - struct ce_state *ce_id_to_state[CE_COUNT_MAX];
>> + struct ce_state ce_states[CE_COUNT_MAX];
>> +
>> + /* makes sure that dummy reads are atomic */
>> + spinlock_t hw_v1_workaround_lock;
>> };
>
> That lock doesn't look right. Is it a leftover from a rebase?
Oh, good catch. I wonder how it got there..
Michał.
^ permalink raw reply
* ath6kl ar6004 usb adapter
From: Lorenzo Nava @ 2013-08-28 6:31 UTC (permalink / raw)
To: linux-wireless
Hi everybosy,
I'm looking for a ar6004 based chip wireless usb adapter.
Anybody knows any available wifi usb adapter with that chip?
Thank you.
Cheers.
^ permalink raw reply
* Re: NGFF based WLAN module
From: Johannes Berg @ 2013-08-28 6:43 UTC (permalink / raw)
To: Matt Chen; +Cc: linux-wireless
In-Reply-To: <521E16F50200009200026750@soto.provo.novell.com>
On Tue, 2013-08-27 at 23:27 -0600, Matt Chen wrote:
> Hi,
>
>
>
> I have a NGFF WLAN module, Intel Wilkins Peak 2, I am wondering how to =
>
> enable it. I found there is nothing from the lspci result. Is there any =
>
> way to enable it in Linux ?
It should just be a regular PCIe device afaik, so maybe there's
something wrong with your system?
johannes
^ permalink raw reply
* ath6kl p2p_find problem
From: Yoshihisa Nakagawa @ 2013-08-28 7:30 UTC (permalink / raw)
To: linux-wireless@vger.kernel.org; +Cc: ath6kl-devel@qualcomm.com
Hello,
I'm using ath6kl with Ubuntu 13.04, kernel version is 3.8.0-23-generic.
In many cases, ath6kl can't find the other terminals in p2p_find.
I capture Probe Request packet with wireshark. ath6kl's SSID is Broadcast,
another machine's SSID is "DIRECT-".
On Wi-Fi Direct spec says, Each SSID shall begin with the ASCII characters "DIRECT-".
It's a firmware or driver problem ?
dmesg is here:
[ 7.979257] ath6kl: Failed to get board file ath6k/AR6003/hw2.1.1/bdata.bin (-2), trying to find default board file.
[ 7.980508] ath6kl: WARNING! No proper board file was not found, instead using a default board file.
[ 7.980521] ath6kl: Most likely your hardware won't work as specified. Install correct board file!
[ 8.485200] ath6kl: temporary war to avoid sdio crc error
[ 9.260521] ath6kl: ar6003 hw 2.1.1 sdio fw 3.2.0.144\x01 api 3
[ 9.260554] ath6kl: firmware supports: sched-scan,sta-p2pdev-duplex,rsn-cap-override
Thanks,
Yoshihisa NAKAGAWA
^ permalink raw reply
* [PATCH v3 00/16] wcn36xx: mac80211 driver for Qualcomm WCN3660/WCN3680 hardware
From: Eugene Krasnikov @ 2013-08-28 7:56 UTC (permalink / raw)
To: linux-wireless; +Cc: wcn36xx, Eugene Krasnikov
This is a mac80211 driver for Qualcomm WCN3660/WCN3680 devices. So
far WCN3660/WCN3680 is available only on MSM platform.
During second round some dead code was found. Functionality was not changed
after second review.
To make review easier the driver sent in several patches, one patch per file, but after
review it will be sent as one big file.
Firmware can be found here:
https://github.com/AOKP/vendor_sony/find/jb-mr1
Wiki page is available here:
http://wireless.kernel.org/en/users/Drivers/wcn36xx
A lot people made a contribution to this driver. Her is the list in
alphabetical order:
Eugene Krasnikov <k.eugene.e@gmail.com>
Kalle Valo <kvalo@qca.qualcomm.com>
Olof Johansson <dev@skyshaper.net>
Pontus Fuchs <pontus.fuchs@gmail.com>
Yanbo Li <yanbol@qti.qualcomm.com>
Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
---
Eugene Krasnikov (16):
wcn36xx: add main.c
wcn36xx: add debug.c
wcn36xx: add debug.h
wcn36xx: add dxe.c
wcn36xx: add dxe.h
wcn36xx: add hal.h
wcn36xx: add pmc.c
wcn36xx: add pmc.h
wcn36xx: add smd.c
wcn36xx: add smd.h
wcn36xx: add txrx.c
wcn36xx: add txrx.h
wcn36xx: add wcn36xx.h
wcn36xx: add Makefile
wcn36xx: add Kconfig
wcn36xx: Add wcn36xx to ath Makefile and Kconfig
drivers/net/wireless/ath/Kconfig | 1 +
drivers/net/wireless/ath/Makefile | 1 +
drivers/net/wireless/ath/wcn36xx/Kconfig | 16 +
drivers/net/wireless/ath/wcn36xx/Makefile | 9 +
drivers/net/wireless/ath/wcn36xx/debug.c | 166 +
drivers/net/wireless/ath/wcn36xx/debug.h | 49 +
drivers/net/wireless/ath/wcn36xx/dxe.c | 804 +++++
drivers/net/wireless/ath/wcn36xx/dxe.h | 281 ++
drivers/net/wireless/ath/wcn36xx/hal.h | 4657 ++++++++++++++++++++++++++++
drivers/net/wireless/ath/wcn36xx/main.c | 1035 +++++++
drivers/net/wireless/ath/wcn36xx/pmc.c | 46 +
drivers/net/wireless/ath/wcn36xx/pmc.h | 32 +
drivers/net/wireless/ath/wcn36xx/smd.c | 1530 +++++++++
drivers/net/wireless/ath/wcn36xx/smd.h | 121 +
drivers/net/wireless/ath/wcn36xx/txrx.c | 256 ++
drivers/net/wireless/ath/wcn36xx/txrx.h | 160 +
drivers/net/wireless/ath/wcn36xx/wcn36xx.h | 236 ++
17 files changed, 9400 insertions(+)
create mode 100644 drivers/net/wireless/ath/wcn36xx/Kconfig
create mode 100644 drivers/net/wireless/ath/wcn36xx/Makefile
create mode 100644 drivers/net/wireless/ath/wcn36xx/debug.c
create mode 100644 drivers/net/wireless/ath/wcn36xx/debug.h
create mode 100644 drivers/net/wireless/ath/wcn36xx/dxe.c
create mode 100644 drivers/net/wireless/ath/wcn36xx/dxe.h
create mode 100644 drivers/net/wireless/ath/wcn36xx/hal.h
create mode 100644 drivers/net/wireless/ath/wcn36xx/main.c
create mode 100644 drivers/net/wireless/ath/wcn36xx/pmc.c
create mode 100644 drivers/net/wireless/ath/wcn36xx/pmc.h
create mode 100644 drivers/net/wireless/ath/wcn36xx/smd.c
create mode 100644 drivers/net/wireless/ath/wcn36xx/smd.h
create mode 100644 drivers/net/wireless/ath/wcn36xx/txrx.c
create mode 100644 drivers/net/wireless/ath/wcn36xx/txrx.h
create mode 100644 drivers/net/wireless/ath/wcn36xx/wcn36xx.h
--
1.8.2.2
^ permalink raw reply
* [PATCH v3 01/16] wcn36xx: add main.c
From: Eugene Krasnikov @ 2013-08-28 7:56 UTC (permalink / raw)
To: linux-wireless; +Cc: wcn36xx, Eugene Krasnikov
In-Reply-To: <1377676606-23033-1-git-send-email-k.eugene.e@gmail.com>
add main.c
Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
---
drivers/net/wireless/ath/wcn36xx/main.c | 1035 +++++++++++++++++++++++++++++++
1 file changed, 1035 insertions(+)
create mode 100644 drivers/net/wireless/ath/wcn36xx/main.c
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
new file mode 100644
index 0000000..0dd9771
--- /dev/null
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -0,0 +1,1035 @@
+/*
+ * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include "wcn36xx.h"
+
+unsigned int debug_mask;
+module_param(debug_mask, uint, 0644);
+MODULE_PARM_DESC(debug_mask, "Debugging mask");
+
+#define CHAN2G(_freq, _idx) { \
+ .band = IEEE80211_BAND_2GHZ, \
+ .center_freq = (_freq), \
+ .hw_value = (_idx), \
+ .max_power = 25, \
+}
+
+#define CHAN5G(_freq, _idx) { \
+ .band = IEEE80211_BAND_5GHZ, \
+ .center_freq = (_freq), \
+ .hw_value = (_idx), \
+ .max_power = 25, \
+}
+
+/* The wcn firmware expects channel values to matching
+ * their mnemonic values. So use these for .hw_value. */
+static struct ieee80211_channel wcn_2ghz_channels[] = {
+ CHAN2G(2412, 1), /* Channel 1 */
+ CHAN2G(2417, 2), /* Channel 2 */
+ CHAN2G(2422, 3), /* Channel 3 */
+ CHAN2G(2427, 4), /* Channel 4 */
+ CHAN2G(2432, 5), /* Channel 5 */
+ CHAN2G(2437, 6), /* Channel 6 */
+ CHAN2G(2442, 7), /* Channel 7 */
+ CHAN2G(2447, 8), /* Channel 8 */
+ CHAN2G(2452, 9), /* Channel 9 */
+ CHAN2G(2457, 10), /* Channel 10 */
+ CHAN2G(2462, 11), /* Channel 11 */
+ CHAN2G(2467, 12), /* Channel 12 */
+ CHAN2G(2472, 13), /* Channel 13 */
+ CHAN2G(2484, 14) /* Channel 14 */
+
+};
+
+static struct ieee80211_channel wcn_5ghz_channels[] = {
+ CHAN5G(5180, 36),
+ CHAN5G(5200, 40),
+ CHAN5G(5220, 44),
+ CHAN5G(5240, 48),
+ CHAN5G(5260, 52),
+ CHAN5G(5280, 56),
+ CHAN5G(5300, 60),
+ CHAN5G(5320, 64),
+ CHAN5G(5500, 100),
+ CHAN5G(5520, 104),
+ CHAN5G(5540, 108),
+ CHAN5G(5560, 112),
+ CHAN5G(5580, 116),
+ CHAN5G(5600, 120),
+ CHAN5G(5620, 124),
+ CHAN5G(5640, 128),
+ CHAN5G(5660, 132),
+ CHAN5G(5700, 140),
+ CHAN5G(5745, 149),
+ CHAN5G(5765, 153),
+ CHAN5G(5785, 157),
+ CHAN5G(5805, 161),
+ CHAN5G(5825, 165)
+};
+
+#define RATE(_bitrate, _hw_rate, _flags) { \
+ .bitrate = (_bitrate), \
+ .flags = (_flags), \
+ .hw_value = (_hw_rate), \
+ .hw_value_short = (_hw_rate) \
+}
+
+static struct ieee80211_rate wcn_2ghz_rates[] = {
+ RATE(10, HW_RATE_INDEX_1MBPS, 0),
+ RATE(20, HW_RATE_INDEX_2MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
+ RATE(55, HW_RATE_INDEX_5_5MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
+ RATE(110, HW_RATE_INDEX_11MBPS, IEEE80211_RATE_SHORT_PREAMBLE),
+ RATE(60, HW_RATE_INDEX_6MBPS, 0),
+ RATE(90, HW_RATE_INDEX_9MBPS, 0),
+ RATE(120, HW_RATE_INDEX_12MBPS, 0),
+ RATE(180, HW_RATE_INDEX_18MBPS, 0),
+ RATE(240, HW_RATE_INDEX_24MBPS, 0),
+ RATE(360, HW_RATE_INDEX_36MBPS, 0),
+ RATE(480, HW_RATE_INDEX_48MBPS, 0),
+ RATE(540, HW_RATE_INDEX_54MBPS, 0)
+};
+
+static struct ieee80211_rate wcn_5ghz_rates[] = {
+ RATE(60, HW_RATE_INDEX_6MBPS, 0),
+ RATE(90, HW_RATE_INDEX_9MBPS, 0),
+ RATE(120, HW_RATE_INDEX_12MBPS, 0),
+ RATE(180, HW_RATE_INDEX_18MBPS, 0),
+ RATE(240, HW_RATE_INDEX_24MBPS, 0),
+ RATE(360, HW_RATE_INDEX_36MBPS, 0),
+ RATE(480, HW_RATE_INDEX_48MBPS, 0),
+ RATE(540, HW_RATE_INDEX_54MBPS, 0)
+};
+
+static struct ieee80211_supported_band wcn_band_2ghz = {
+ .channels = wcn_2ghz_channels,
+ .n_channels = ARRAY_SIZE(wcn_2ghz_channels),
+ .bitrates = wcn_2ghz_rates,
+ .n_bitrates = ARRAY_SIZE(wcn_2ghz_rates),
+ .ht_cap = {
+ .cap = IEEE80211_HT_CAP_GRN_FLD |
+ IEEE80211_HT_CAP_SGI_20 |
+ IEEE80211_HT_CAP_DSSSCCK40 |
+ IEEE80211_HT_CAP_LSIG_TXOP_PROT,
+ .ht_supported = true,
+ .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
+ .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
+ .mcs = {
+ .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
+ .rx_highest = cpu_to_le16(72),
+ .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
+ }
+ }
+};
+
+static struct ieee80211_supported_band wcn_band_5ghz = {
+ .channels = wcn_5ghz_channels,
+ .n_channels = ARRAY_SIZE(wcn_5ghz_channels),
+ .bitrates = wcn_5ghz_rates,
+ .n_bitrates = ARRAY_SIZE(wcn_5ghz_rates),
+ .ht_cap = {
+ .cap = IEEE80211_HT_CAP_GRN_FLD |
+ IEEE80211_HT_CAP_SGI_20 |
+ IEEE80211_HT_CAP_DSSSCCK40 |
+ IEEE80211_HT_CAP_LSIG_TXOP_PROT |
+ IEEE80211_HT_CAP_SGI_40 |
+ IEEE80211_HT_CAP_SUP_WIDTH_20_40,
+ .ht_supported = true,
+ .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K,
+ .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16,
+ .mcs = {
+ .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, },
+ .rx_highest = cpu_to_le16(72),
+ .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
+ }
+ }
+};
+
+#ifdef CONFIG_PM
+
+static const struct wiphy_wowlan_support wowlan_support = {
+ .flags = WIPHY_WOWLAN_ANY
+};
+
+#endif
+
+static inline u8 get_sta_index(struct ieee80211_vif *vif,
+ struct wcn36xx_sta *sta_priv)
+{
+ return NL80211_IFTYPE_STATION == vif->type ?
+ sta_priv->bss_sta_index :
+ sta_priv->sta_index;
+}
+
+static int wcn36xx_start(struct ieee80211_hw *hw)
+{
+ struct wcn36xx *wcn = hw->priv;
+ int ret;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac start\n");
+
+ /* SMD initialization */
+ ret = wcn36xx_smd_open(wcn);
+ if (ret) {
+ wcn36xx_err("Failed to open smd channel: %d\n", ret);
+ goto out_err;
+ }
+
+ /* Allocate memory pools for Mgmt BD headers and Data BD headers */
+ ret = wcn36xx_dxe_allocate_mem_pools(wcn);
+ if (ret) {
+ wcn36xx_err("Failed to alloc DXE mempool: %d\n", ret);
+ goto out_smd_close;
+ }
+
+ ret = wcn36xx_dxe_alloc_ctl_blks(wcn);
+ if (ret) {
+ wcn36xx_err("Failed to alloc DXE ctl blocks: %d\n", ret);
+ goto out_free_dxe_pool;
+ }
+
+ /* Maximum SMD message size is 4k */
+ wcn->smd_buf = kmalloc(WCN36XX_SMD_BUF_SIZE, GFP_KERNEL);
+ if (!wcn->smd_buf) {
+ wcn36xx_err("Failed to allocate smd buf\n");
+ ret = -ENOMEM;
+ goto out_free_dxe_ctl;
+ }
+
+ ret = wcn36xx_smd_load_nv(wcn);
+ if (ret) {
+ wcn36xx_err("Failed to push NV to chip\n");
+ goto out_free_smd_buf;
+ }
+
+ ret = wcn36xx_smd_start(wcn);
+ if (ret) {
+ wcn36xx_err("Failed to start chip\n");
+ goto out_free_smd_buf;
+ }
+
+ /* DMA channel initialization */
+ ret = wcn36xx_dxe_init(wcn);
+ if (ret) {
+ wcn36xx_err("DXE init failed\n");
+ goto out_smd_stop;
+ }
+
+ wcn36xx_pmc_init(wcn);
+ wcn36xx_debugfs_init(wcn);
+
+ if (!wcn36xx_is_fw_version(wcn, 1, 2, 2, 24)) {
+ ret = wcn36xx_smd_feature_caps_exchange(wcn);
+ if (ret)
+ wcn36xx_warn("Exchange feature caps failed\n");
+ }
+
+ return 0;
+
+out_smd_stop:
+ wcn36xx_smd_stop(wcn);
+out_free_smd_buf:
+ kfree(wcn->smd_buf);
+out_free_dxe_pool:
+ wcn36xx_dxe_free_mem_pools(wcn);
+out_free_dxe_ctl:
+ wcn36xx_dxe_free_ctl_blks(wcn);
+out_smd_close:
+ wcn36xx_smd_close(wcn);
+out_err:
+ return ret;
+}
+
+static void wcn36xx_stop(struct ieee80211_hw *hw)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac stop\n");
+
+ wcn36xx_debugfs_exit(wcn);
+ wcn36xx_smd_stop(wcn);
+ wcn36xx_dxe_deinit(wcn);
+ wcn36xx_smd_close(wcn);
+
+ wcn36xx_dxe_free_mem_pools(wcn);
+ wcn36xx_dxe_free_ctl_blks(wcn);
+
+ kfree(wcn->smd_buf);
+}
+
+static int wcn36xx_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac config changed 0x%08x\n", changed);
+
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+ int ch = WCN36XX_HW_CHANNEL(wcn);
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "wcn36xx_config channel switch=%d\n",
+ ch);
+ wcn36xx_smd_switch_channel(wcn, ch);
+ }
+
+ return 0;
+}
+
+#define WCN36XX_SUPPORTED_FILTERS (0)
+
+static void wcn36xx_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed,
+ unsigned int *total, u64 multicast)
+{
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac configure filter\n");
+
+ *total &= WCN36XX_SUPPORTED_FILTERS;
+}
+
+static void wcn36xx_tx(struct ieee80211_hw *hw,
+ struct ieee80211_tx_control *control,
+ struct sk_buff *skb)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct wcn36xx_sta *sta_priv = NULL;
+
+ if (control->sta)
+ sta_priv = (struct wcn36xx_sta *)control->sta->drv_priv;
+
+ if (wcn36xx_start_tx(wcn, sta_priv, skb))
+ ieee80211_free_txskb(wcn->hw, skb);
+}
+
+static int wcn36xx_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key_conf)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct wcn36xx_sta *sta_priv = NULL;
+ int ret = 0;
+ u8 key[WLAN_MAX_KEY_LEN];
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac80211 set key\n");
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "Key: cmd=0x%x algo:0x%x, id:%d, len:%d flags 0x%x\n",
+ cmd, key_conf->cipher, key_conf->keyidx,
+ key_conf->keylen, key_conf->flags);
+ wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "KEY: ",
+ key_conf->key,
+ key_conf->keylen);
+ sta_priv = sta ? (struct wcn36xx_sta *)sta->drv_priv : wcn->sta;
+
+ switch (key_conf->cipher) {
+ case WLAN_CIPHER_SUITE_WEP40:
+ wcn->encrypt_type = WCN36XX_HAL_ED_WEP40;
+ break;
+ case WLAN_CIPHER_SUITE_WEP104:
+ wcn->encrypt_type = WCN36XX_HAL_ED_WEP40;
+ break;
+ case WLAN_CIPHER_SUITE_CCMP:
+ wcn->encrypt_type = WCN36XX_HAL_ED_CCMP;
+ break;
+ case WLAN_CIPHER_SUITE_TKIP:
+ wcn->encrypt_type = WCN36XX_HAL_ED_TKIP;
+ break;
+ default:
+ wcn36xx_err("Unsupported key type 0x%x\n",
+ key_conf->cipher);
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ switch (cmd) {
+ case SET_KEY:
+ if (WCN36XX_HAL_ED_TKIP == wcn->encrypt_type) {
+ /*
+ * Supplicant is sending key in the wrong order:
+ * Temporal Key (16 b) - TX MIC (8 b) - RX MIC (8 b)
+ * but HW expects it to be in the order as described in
+ * IEEE 802.11 spec (see chapter 11.7) like this:
+ * Temporal Key (16 b) - RX MIC (8 b) - TX MIC (8 b)
+ */
+ memcpy(key, key_conf->key, 16);
+ memcpy(key + 16, key_conf->key + 24, 8);
+ memcpy(key + 24, key_conf->key + 16, 8);
+ } else {
+ memcpy(key, key_conf->key, key_conf->keylen);
+ }
+
+ if (IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags) {
+ sta_priv->is_data_encrypted = true;
+ /* Reconfigure bss with encrypt_type */
+ if (NL80211_IFTYPE_STATION == vif->type)
+ wcn36xx_smd_config_bss(wcn,
+ vif,
+ sta,
+ sta->addr,
+ true);
+
+ wcn36xx_smd_set_stakey(wcn,
+ wcn->encrypt_type,
+ key_conf->keyidx,
+ key_conf->keylen,
+ key,
+ get_sta_index(vif, sta_priv));
+ } else {
+ wcn36xx_smd_set_bsskey(wcn,
+ wcn->encrypt_type,
+ key_conf->keyidx,
+ key_conf->keylen,
+ key);
+ if ((WLAN_CIPHER_SUITE_WEP40 == key_conf->cipher) ||
+ (WLAN_CIPHER_SUITE_WEP104 == key_conf->cipher)) {
+ sta_priv->is_data_encrypted = true;
+ wcn36xx_smd_set_stakey(wcn,
+ wcn->encrypt_type,
+ key_conf->keyidx,
+ key_conf->keylen,
+ key,
+ get_sta_index(vif, sta_priv));
+ }
+ }
+ break;
+ case DISABLE_KEY:
+ if (!(IEEE80211_KEY_FLAG_PAIRWISE & key_conf->flags)) {
+ wcn36xx_smd_remove_bsskey(wcn,
+ wcn->encrypt_type,
+ key_conf->keyidx);
+ } else {
+ sta_priv->is_data_encrypted = false;
+ /* do not remove key if disassociated */
+ if (wcn->aid)
+ wcn36xx_smd_remove_stakey(wcn,
+ wcn->encrypt_type,
+ key_conf->keyidx,
+ get_sta_index(vif, sta_priv));
+ }
+ break;
+ default:
+ wcn36xx_err("Unsupported key cmd 0x%x\n", cmd);
+ ret = -EOPNOTSUPP;
+ goto out;
+ break;
+ }
+
+out:
+ return ret;
+}
+
+static void wcn36xx_sw_scan_start(struct ieee80211_hw *hw)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ wcn36xx_smd_init_scan(wcn);
+ wcn36xx_smd_start_scan(wcn);
+}
+
+static void wcn36xx_sw_scan_complete(struct ieee80211_hw *hw)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ wcn36xx_smd_end_scan(wcn);
+ wcn36xx_smd_finish_scan(wcn);
+}
+
+static void wcn36xx_update_allowed_rates(struct wcn36xx *wcn,
+ struct ieee80211_sta *sta)
+{
+ int i, size;
+ u16 *rates_table;
+ u32 rates = sta->supp_rates[wcn->hw->conf.chandef.chan->band];
+
+ memset(&wcn->supported_rates, 0, sizeof(wcn->supported_rates));
+ wcn->supported_rates.op_rate_mode = STA_11n;
+
+ size = ARRAY_SIZE(wcn->supported_rates.dsss_rates);
+ rates_table = wcn->supported_rates.dsss_rates;
+ if (wcn->hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
+ for (i = 0; i < size; i++) {
+ if (rates & 0x01) {
+ rates_table[i] = wcn_2ghz_rates[i].hw_value;
+ rates = rates >> 1;
+ }
+ }
+ }
+
+ size = ARRAY_SIZE(wcn->supported_rates.ofdm_rates);
+ rates_table = wcn->supported_rates.ofdm_rates;
+ for (i = 0; i < size; i++) {
+ if (rates & 0x01) {
+ rates_table[i] = wcn_5ghz_rates[i].hw_value;
+ rates = rates >> 1;
+ }
+ }
+
+ if (sta->ht_cap.ht_supported) {
+ memcpy(wcn->supported_rates.supported_mcs_set,
+ sta->ht_cap.mcs.rx_mask,
+ sizeof(sta->ht_cap.mcs.rx_mask));
+ BUILD_BUG_ON(sizeof(sta->ht_cap.mcs.rx_mask) >
+ sizeof(wcn->supported_rates.supported_mcs_set));
+ }
+}
+
+static void wcn36xx_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changed)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct sk_buff *skb = NULL;
+ u16 tim_off, tim_len;
+ enum wcn36xx_hal_link_state link_state;
+
+ wcn->current_vif = (struct wcn36xx_vif *)vif->drv_priv;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss info changed vif %p changed 0x%08x\n",
+ vif, changed);
+
+ if (changed & BSS_CHANGED_BEACON_INFO) {
+ wcn36xx_dbg(WCN36XX_DBG_MAC,
+ "mac bss changed dtim period %d\n",
+ bss_conf->dtim_period);
+
+ wcn->dtim_period = bss_conf->dtim_period;
+ }
+
+ if (changed & BSS_CHANGED_BSSID) {
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed_bssid %pM\n",
+ bss_conf->bssid);
+
+ if (!is_zero_ether_addr(bss_conf->bssid)) {
+ wcn->is_joining = true;
+ wcn->current_vif->bss_index = 0xff;
+ wcn36xx_smd_join(wcn, bss_conf->bssid,
+ vif->addr, WCN36XX_HW_CHANNEL(wcn));
+ wcn36xx_smd_config_bss(wcn, vif, NULL,
+ bss_conf->bssid, false);
+ } else {
+ wcn->is_joining = false;
+ wcn36xx_smd_delete_bss(wcn);
+ }
+ }
+
+ if (changed & BSS_CHANGED_SSID) {
+ wcn36xx_dbg(WCN36XX_DBG_MAC,
+ "mac bss changed ssid\n");
+ wcn36xx_dbg_dump(WCN36XX_DBG_MAC, "ssid ",
+ bss_conf->ssid, bss_conf->ssid_len);
+
+ wcn->ssid.length = bss_conf->ssid_len;
+ memcpy(&wcn->ssid.ssid, bss_conf->ssid, bss_conf->ssid_len);
+ }
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ wcn->is_joining = false;
+ if (bss_conf->assoc) {
+ struct ieee80211_sta *sta;
+ struct wcn36xx_sta *sta_priv;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC,
+ "mac assoc bss %pM vif %pM AID=%d\n",
+ bss_conf->bssid,
+ vif->addr,
+ bss_conf->aid);
+
+ wcn->aid = bss_conf->aid;
+
+ rcu_read_lock();
+ sta = ieee80211_find_sta(vif, bss_conf->bssid);
+ if (!sta) {
+ wcn36xx_err("sta %pM is not found\n",
+ bss_conf->bssid);
+ rcu_read_unlock();
+ goto out;
+ }
+ sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
+
+ wcn36xx_update_allowed_rates(wcn, sta);
+
+ wcn36xx_smd_set_link_st(wcn, bss_conf->bssid,
+ vif->addr,
+ WCN36XX_HAL_LINK_POSTASSOC_STATE);
+ wcn->sta = sta_priv;
+ wcn36xx_smd_config_bss(wcn, vif, sta,
+ bss_conf->bssid,
+ true);
+ rcu_read_unlock();
+ } else {
+ wcn36xx_dbg(WCN36XX_DBG_MAC,
+ "disassociated bss %pM vif %pM AID=%d\n",
+ bss_conf->bssid,
+ vif->addr,
+ bss_conf->aid);
+ wcn->aid = 0;
+ wcn36xx_smd_set_link_st(wcn,
+ bss_conf->bssid,
+ vif->addr,
+ WCN36XX_HAL_LINK_IDLE_STATE);
+ }
+ }
+
+ if (changed & BSS_CHANGED_AP_PROBE_RESP) {
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac bss changed ap probe resp\n");
+ skb = ieee80211_proberesp_get(hw, vif);
+ if (!skb) {
+ wcn36xx_err("failed to alloc probereq skb\n");
+ goto out;
+ }
+
+ wcn36xx_smd_update_proberesp_tmpl(wcn, skb);
+ dev_kfree_skb(skb);
+ }
+
+ if (changed & BSS_CHANGED_BEACON_ENABLED) {
+ wcn36xx_dbg(WCN36XX_DBG_MAC,
+ "mac bss changed beacon enabled %d\n",
+ bss_conf->enable_beacon);
+
+ if (bss_conf->enable_beacon) {
+ wcn->current_vif->bss_index = 0xff;
+ wcn36xx_smd_config_bss(wcn, vif, NULL,
+ wcn->addresses.addr, false);
+ skb = ieee80211_beacon_get_tim(hw, vif, &tim_off,
+ &tim_len);
+ if (!skb) {
+ wcn36xx_err("failed to alloc beacon skb\n");
+ goto out;
+ }
+ wcn36xx_smd_send_beacon(wcn, skb, tim_off, 0);
+ dev_kfree_skb(skb);
+
+ if (vif->type == NL80211_IFTYPE_ADHOC ||
+ vif->type == NL80211_IFTYPE_MESH_POINT)
+ link_state = WCN36XX_HAL_LINK_IBSS_STATE;
+ else
+ link_state = WCN36XX_HAL_LINK_AP_STATE;
+
+ wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
+ link_state);
+ } else {
+ wcn36xx_smd_set_link_st(wcn, vif->addr, vif->addr,
+ WCN36XX_HAL_LINK_IDLE_STATE);
+ wcn36xx_smd_delete_bss(wcn);
+ }
+ }
+out:
+ return;
+}
+
+/* this is required when using IEEE80211_HW_HAS_RATE_CONTROL */
+static int wcn36xx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ struct wcn36xx *wcn = hw->priv;
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac set RTS threshold %d\n", value);
+
+ wcn36xx_smd_update_cfg(wcn, WCN36XX_HAL_CFG_RTS_THRESHOLD, value);
+ return 0;
+}
+
+static void wcn36xx_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct wcn36xx *wcn = hw->priv;
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac remove interface vif %p\n", vif);
+ wcn36xx_smd_delete_sta_self(wcn, vif->addr);
+}
+
+static int wcn36xx_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac add interface vif %p type %d\n",
+ vif, vif->type);
+
+ wcn->current_vif = (struct wcn36xx_vif *)vif->drv_priv;
+
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ wcn36xx_smd_add_sta_self(wcn, vif->addr, 0);
+ break;
+ case NL80211_IFTYPE_AP:
+ wcn36xx_smd_add_sta_self(wcn, vif->addr, 0);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_MESH_POINT:
+ wcn36xx_smd_add_sta_self(wcn, vif->addr, 0);
+ break;
+ default:
+ wcn36xx_warn("Unsupported interface type requested: %d\n",
+ vif->type);
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct wcn36xx *wcn = hw->priv;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta add vif %p sta %pM\n",
+ vif, sta->addr);
+
+ wcn->sta = (struct wcn36xx_sta *)sta->drv_priv;
+ wcn->aid = sta->aid;
+ wcn36xx_smd_config_sta(wcn, vif, sta);
+
+ return 0;
+}
+
+static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct wcn36xx_sta *sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
+ vif, sta->addr, sta_priv->sta_index);
+
+ wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int wcn36xx_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wow)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct ieee80211_vif *vif = container_of((void *)wcn->current_vif,
+ struct ieee80211_vif,
+ drv_priv);
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac suspend\n");
+
+ mutex_lock(&wcn->pm_mutex);
+
+ /* Enter BMPS only in connected state */
+ if ((wcn->aid > 0) &&
+ (wcn->pw_state != WCN36XX_BMPS) &&
+ (NL80211_IFTYPE_STATION == vif->type))
+ wcn36xx_pmc_enter_bmps_state(wcn, vif->bss_conf.sync_tsf);
+
+ wcn->is_suspended = true;
+ wcn->is_con_lost_pending = false;
+
+ mutex_unlock(&wcn->pm_mutex);
+
+ return 0;
+}
+
+static int wcn36xx_resume(struct ieee80211_hw *hw)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct ieee80211_vif *vif = container_of((void *)wcn->current_vif,
+ struct ieee80211_vif,
+ drv_priv);
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac resume\n");
+
+ wcn->is_suspended = false;
+
+ if (wcn->pw_state == WCN36XX_BMPS)
+ wcn36xx_pmc_exit_bmps_state(wcn);
+
+ if (wcn->is_con_lost_pending) {
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "report connection lost\n");
+ ieee80211_connection_loss(vif);
+ }
+
+ return 0;
+}
+
+#endif
+
+static int wcn36xx_ampdu_action(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta, u16 tid, u16 *ssn,
+ u8 buf_size)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct wcn36xx_sta *sta_priv = NULL;
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "mac ampdu action action %d tid %d\n",
+ action, tid);
+
+ sta_priv = (struct wcn36xx_sta *)sta->drv_priv;
+
+ switch (action) {
+ case IEEE80211_AMPDU_RX_START:
+ sta_priv->tid = tid;
+ wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 0,
+ get_sta_index(vif, sta_priv));
+ wcn36xx_smd_add_ba(wcn);
+ wcn36xx_smd_trigger_ba(wcn, get_sta_index(vif, sta_priv));
+ ieee80211_start_tx_ba_session(sta, tid, 0);
+ break;
+ case IEEE80211_AMPDU_RX_STOP:
+ wcn36xx_smd_del_ba(wcn, tid, get_sta_index(vif, sta_priv));
+ break;
+ case IEEE80211_AMPDU_TX_START:
+ ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ break;
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ wcn36xx_smd_add_ba_session(wcn, sta, tid, ssn, 1,
+ get_sta_index(vif, sta_priv));
+ break;
+ case IEEE80211_AMPDU_TX_STOP_FLUSH:
+ case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
+ case IEEE80211_AMPDU_TX_STOP_CONT:
+ ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ break;
+ default:
+ wcn36xx_err("Unknown AMPDU action\n");
+ }
+
+ return 0;
+}
+
+static const struct ieee80211_ops wcn36xx_ops = {
+ .start = wcn36xx_start,
+ .stop = wcn36xx_stop,
+ .add_interface = wcn36xx_add_interface,
+ .remove_interface = wcn36xx_remove_interface,
+#ifdef CONFIG_PM
+ .suspend = wcn36xx_suspend,
+ .resume = wcn36xx_resume,
+#endif
+ .config = wcn36xx_config,
+ .configure_filter = wcn36xx_configure_filter,
+ .tx = wcn36xx_tx,
+ .set_key = wcn36xx_set_key,
+ .sw_scan_start = wcn36xx_sw_scan_start,
+ .sw_scan_complete = wcn36xx_sw_scan_complete,
+ .bss_info_changed = wcn36xx_bss_info_changed,
+ .set_rts_threshold = wcn36xx_set_rts_threshold,
+ .sta_add = wcn36xx_sta_add,
+ .sta_remove = wcn36xx_sta_remove,
+ .ampdu_action = wcn36xx_ampdu_action,
+};
+
+static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)
+{
+ int ret = 0;
+
+ static const u32 cipher_suites[] = {
+ WLAN_CIPHER_SUITE_WEP40,
+ WLAN_CIPHER_SUITE_WEP104,
+ WLAN_CIPHER_SUITE_TKIP,
+ WLAN_CIPHER_SUITE_CCMP,
+ };
+
+ wcn->hw->flags = IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_HAS_RATE_CONTROL |
+ IEEE80211_HW_SUPPORTS_PS |
+ IEEE80211_HW_CONNECTION_MONITOR |
+ IEEE80211_HW_AMPDU_AGGREGATION |
+ IEEE80211_HW_TIMING_BEACON_ONLY;
+
+ wcn->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_AP) |
+ BIT(NL80211_IFTYPE_ADHOC) |
+ BIT(NL80211_IFTYPE_MESH_POINT);
+
+ wcn->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wcn_band_2ghz;
+ wcn->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &wcn_band_5ghz;
+
+ wcn->hw->wiphy->cipher_suites = cipher_suites;
+ wcn->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
+
+ wcn->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
+
+#ifdef CONFIG_PM
+ wcn->hw->wiphy->wowlan = &wowlan_support;
+#endif
+
+ wcn->hw->wiphy->n_addresses = 1;
+ wcn->hw->wiphy->addresses = &wcn->addresses;
+
+ wcn->hw->max_listen_interval = 200;
+
+ wcn->hw->queues = 4;
+
+ SET_IEEE80211_DEV(wcn->hw, wcn->dev);
+
+ wcn->hw->sta_data_size = sizeof(struct wcn36xx_sta);
+ wcn->hw->vif_data_size = sizeof(struct wcn36xx_vif);
+
+ return ret;
+}
+
+static int wcn36xx_platform_get_resources(struct wcn36xx *wcn,
+ struct platform_device *pdev)
+{
+ struct resource *res;
+ /* Set TX IRQ */
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
+ "wcnss_wlantx_irq");
+ if (!res) {
+ wcn36xx_err("failed to get tx_irq\n");
+ return -ENOENT;
+ }
+ wcn->tx_irq = res->start;
+
+ /* Set RX IRQ */
+ res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
+ "wcnss_wlanrx_irq");
+ if (!res) {
+ wcn36xx_err("failed to get rx_irq\n");
+ return -ENOENT;
+ }
+ wcn->rx_irq = res->start;
+
+ /* Map the memory */
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ "wcnss_mmio");
+ if (!res) {
+ wcn36xx_err("failed to get mmio\n");
+ return -ENOENT;
+ }
+ wcn->mmio = ioremap(res->start, resource_size(res));
+ if (!wcn->mmio) {
+ wcn36xx_err("failed to map io memory\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static int wcn36xx_probe(struct platform_device *pdev)
+{
+ struct ieee80211_hw *hw;
+ struct wcn36xx *wcn;
+ int ret;
+ u16 ofdm_rates[WCN36XX_HAL_NUM_OFDM_RATES] = {
+ HW_RATE_INDEX_6MBPS,
+ HW_RATE_INDEX_9MBPS,
+ HW_RATE_INDEX_12MBPS,
+ HW_RATE_INDEX_18MBPS,
+ HW_RATE_INDEX_24MBPS,
+ HW_RATE_INDEX_36MBPS,
+ HW_RATE_INDEX_48MBPS,
+ HW_RATE_INDEX_54MBPS
+ };
+ u16 dsss_rates[WCN36XX_HAL_NUM_DSSS_RATES] = {
+ HW_RATE_INDEX_1MBPS,
+ HW_RATE_INDEX_2MBPS,
+ HW_RATE_INDEX_5_5MBPS,
+ HW_RATE_INDEX_11MBPS
+ };
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "platform probe\n");
+
+ hw = ieee80211_alloc_hw(sizeof(struct wcn36xx), &wcn36xx_ops);
+ if (!hw) {
+ wcn36xx_err("failed to alloc hw\n");
+ ret = -ENOMEM;
+ goto out_err;
+ }
+ platform_set_drvdata(pdev, hw);
+ wcn = hw->priv;
+ wcn->hw = hw;
+ wcn->dev = &pdev->dev;
+ wcn->ctrl_ops = pdev->dev.platform_data;
+
+ mutex_init(&wcn->pm_mutex);
+ mutex_init(&wcn->smd_mutex);
+
+ /* Configuring supported rates */
+ wcn->supported_rates.op_rate_mode = STA_11n;
+ memcpy(wcn->supported_rates.dsss_rates, dsss_rates,
+ sizeof(*dsss_rates) * WCN36XX_HAL_NUM_DSSS_RATES);
+ memcpy(wcn->supported_rates.ofdm_rates, ofdm_rates,
+ sizeof(*ofdm_rates) * WCN36XX_HAL_NUM_OFDM_RATES);
+ wcn->supported_rates.supported_mcs_set[0] = 0xFF;
+
+ if (!wcn->ctrl_ops->get_hw_mac(wcn->addresses.addr)) {
+ wcn36xx_info("mac address: %pM\n", wcn->addresses.addr);
+ SET_IEEE80211_PERM_ADDR(wcn->hw, wcn->addresses.addr);
+ }
+
+ ret = wcn36xx_platform_get_resources(wcn, pdev);
+ if (ret)
+ goto out_wq;
+
+ wcn36xx_init_ieee80211(wcn);
+ ret = ieee80211_register_hw(wcn->hw);
+ if (ret)
+ goto out_unmap;
+
+ return 0;
+
+out_unmap:
+ iounmap(wcn->mmio);
+out_wq:
+ ieee80211_free_hw(hw);
+out_err:
+ return ret;
+}
+static int wcn36xx_remove(struct platform_device *pdev)
+{
+ struct ieee80211_hw *hw = platform_get_drvdata(pdev);
+ struct wcn36xx *wcn = hw->priv;
+ wcn36xx_dbg(WCN36XX_DBG_MAC, "platform remove\n");
+
+ mutex_destroy(&wcn->pm_mutex);
+ mutex_destroy(&wcn->smd_mutex);
+
+ ieee80211_unregister_hw(hw);
+ iounmap(wcn->mmio);
+ ieee80211_free_hw(hw);
+
+ return 0;
+}
+static const struct platform_device_id wcn36xx_platform_id_table[] = {
+ {
+ .name = "wcn36xx",
+ .driver_data = 0
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(platform, wcn36xx_platform_id_table);
+
+static struct platform_driver wcn36xx_driver = {
+ .probe = wcn36xx_probe,
+ .remove = wcn36xx_remove,
+ .driver = {
+ .name = "wcn36xx",
+ .owner = THIS_MODULE,
+ },
+ .id_table = wcn36xx_platform_id_table,
+};
+
+static int __init wcn36xx_init(void)
+{
+ platform_driver_register(&wcn36xx_driver);
+ return 0;
+}
+module_init(wcn36xx_init);
+
+static void __exit wcn36xx_exit(void)
+{
+ platform_driver_unregister(&wcn36xx_driver);
+}
+module_exit(wcn36xx_exit);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Eugene Krasnikov k.eugene.e@gmail.com");
+MODULE_FIRMWARE(WLAN_NV_FILE);
--
1.8.2.2
^ permalink raw reply related
* [PATCH v3 02/16] wcn36xx: add debug.c
From: Eugene Krasnikov @ 2013-08-28 7:56 UTC (permalink / raw)
To: linux-wireless; +Cc: wcn36xx, Eugene Krasnikov
In-Reply-To: <1377676606-23033-1-git-send-email-k.eugene.e@gmail.com>
add debug.c
Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
---
drivers/net/wireless/ath/wcn36xx/debug.c | 166 +++++++++++++++++++++++++++++++
1 file changed, 166 insertions(+)
create mode 100644 drivers/net/wireless/ath/wcn36xx/debug.c
diff --git a/drivers/net/wireless/ath/wcn36xx/debug.c b/drivers/net/wireless/ath/wcn36xx/debug.c
new file mode 100644
index 0000000..91508f3
--- /dev/null
+++ b/drivers/net/wireless/ath/wcn36xx/debug.c
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/debugfs.h>
+#include <linux/uaccess.h>
+#include "wcn36xx.h"
+#include "debug.h"
+#include "pmc.h"
+
+#ifdef CONFIG_WCN36XX_DEBUGFS
+
+static int wcn36xx_debugfs_open(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+
+ return 0;
+}
+
+static ssize_t read_file_bool_bmps(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct wcn36xx *wcn = file->private_data;
+ char buf[3];
+
+ if (wcn->pw_state == WCN36XX_BMPS)
+ buf[0] = '1';
+ else
+ buf[0] = '0';
+
+ buf[1] = '\n';
+ buf[2] = 0x00;
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
+}
+
+static ssize_t write_file_bool_bmps(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct wcn36xx *wcn = file->private_data;
+ struct ieee80211_vif *vif = container_of((void *)wcn->current_vif,
+ struct ieee80211_vif,
+ drv_priv);
+ char buf[32];
+ int buf_size;
+
+ buf_size = min(count, (sizeof(buf)-1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+
+ switch (buf[0]) {
+ case 'y':
+ case 'Y':
+ case '1':
+ wcn36xx_enable_keep_alive_null_packet(wcn);
+ wcn36xx_pmc_enter_bmps_state(wcn, vif->bss_conf.sync_tsf);
+ break;
+ case 'n':
+ case 'N':
+ case '0':
+ wcn36xx_pmc_exit_bmps_state(wcn);
+ break;
+ }
+
+ return count;
+}
+
+static const struct file_operations fops_wcn36xx_bmps = {
+ .open = wcn36xx_debugfs_open,
+ .read = read_file_bool_bmps,
+ .write = write_file_bool_bmps,
+};
+
+static ssize_t write_file_dump(struct file *file,
+ const char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct wcn36xx *wcn = file->private_data;
+ char buf[255], *tmp;
+ int buf_size;
+ u32 arg[WCN36xx_MAX_DUMP_ARGS];
+ int i;
+
+ memset(buf, 0, sizeof(buf));
+ memset(arg, 0, sizeof(arg));
+
+ buf_size = min(count, (sizeof(buf) - 1));
+ if (copy_from_user(buf, user_buf, buf_size))
+ return -EFAULT;
+
+ tmp = buf;
+
+ for (i = 0; i < WCN36xx_MAX_DUMP_ARGS; i++) {
+ char *begin;
+ begin = strsep(&tmp, " ");
+ if (begin == NULL)
+ break;
+
+ if (kstrtoul(begin, 0, (unsigned long *)(arg + i)) != 0)
+ break;
+ }
+
+ wcn36xx_info("DUMP args is %d %d %d %d %d\n", arg[0], arg[1], arg[2],
+ arg[3], arg[4]);
+ wcn36xx_smd_dump_cmd_req(wcn, arg[0], arg[1], arg[2], arg[3], arg[4]);
+
+ return count;
+}
+
+static const struct file_operations fops_wcn36xx_dump = {
+ .open = wcn36xx_debugfs_open,
+ .write = write_file_dump,
+};
+
+#define ADD_FILE(name, mode, fop, priv_data) \
+ do { \
+ struct dentry *d; \
+ d = debugfs_create_file(__stringify(name), \
+ mode, dfs->rootdir, \
+ priv_data, fop); \
+ dfs->file_##name.dentry = d; \
+ if (IS_ERR(d)) { \
+ wcn36xx_warn("Create the debugfs entry failed");\
+ dfs->file_##name.dentry = NULL; \
+ } \
+ } while (0)
+
+
+void wcn36xx_debugfs_init(struct wcn36xx *wcn)
+{
+ struct wcn36xx_dfs_entry *dfs = &wcn->dfs;
+
+ dfs->rootdir = debugfs_create_dir(KBUILD_MODNAME,
+ wcn->hw->wiphy->debugfsdir);
+ if (IS_ERR(dfs->rootdir)) {
+ wcn36xx_warn("Create the debugfs failed\n");
+ dfs->rootdir = NULL;
+ }
+
+ ADD_FILE(bmps_switcher, S_IRUSR | S_IWUSR,
+ &fops_wcn36xx_bmps, wcn);
+ ADD_FILE(dump, S_IWUSR, &fops_wcn36xx_dump, wcn);
+}
+
+void wcn36xx_debugfs_exit(struct wcn36xx *wcn)
+{
+ struct wcn36xx_dfs_entry *dfs = &wcn->dfs;
+ debugfs_remove_recursive(dfs->rootdir);
+}
+
+#endif /* CONFIG_WCN36XX_DEBUGFS */
--
1.8.2.2
^ permalink raw reply related
* [PATCH v3 03/16] wcn36xx: add debug.h
From: Eugene Krasnikov @ 2013-08-28 7:56 UTC (permalink / raw)
To: linux-wireless; +Cc: wcn36xx, Eugene Krasnikov
In-Reply-To: <1377676606-23033-1-git-send-email-k.eugene.e@gmail.com>
add debug.h
Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
---
drivers/net/wireless/ath/wcn36xx/debug.h | 49 ++++++++++++++++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 drivers/net/wireless/ath/wcn36xx/debug.h
diff --git a/drivers/net/wireless/ath/wcn36xx/debug.h b/drivers/net/wireless/ath/wcn36xx/debug.h
new file mode 100644
index 0000000..46307aa
--- /dev/null
+++ b/drivers/net/wireless/ath/wcn36xx/debug.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _WCN36XX_DEBUG_H_
+#define _WCN36XX_DEBUG_H_
+
+#include <linux/kernel.h>
+
+#define WCN36xx_MAX_DUMP_ARGS 5
+
+#ifdef CONFIG_WCN36XX_DEBUGFS
+struct wcn36xx_dfs_file {
+ struct dentry *dentry;
+ u32 value;
+};
+
+struct wcn36xx_dfs_entry {
+ struct dentry *rootdir;
+ struct wcn36xx_dfs_file file_bmps_switcher;
+ struct wcn36xx_dfs_file file_dump;
+};
+
+void wcn36xx_debugfs_init(struct wcn36xx *wcn);
+void wcn36xx_debugfs_exit(struct wcn36xx *wcn);
+
+#else
+static inline void wcn36xx_debugfs_init(struct wcn36xx *wcn)
+{
+}
+static inline void wcn36xx_debugfs_exit(struct wcn36xx *wcn)
+{
+}
+
+#endif /* CONFIG_WCN36XX_DEBUGFS */
+
+#endif /* _WCN36XX_DEBUG_H_ */
--
1.8.2.2
^ permalink raw reply related
* [PATCH v3 04/16] wcn36xx: add dxe.c
From: Eugene Krasnikov @ 2013-08-28 7:56 UTC (permalink / raw)
To: linux-wireless; +Cc: wcn36xx, Eugene Krasnikov
In-Reply-To: <1377676606-23033-1-git-send-email-k.eugene.e@gmail.com>
add dxe.c
Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
---
drivers/net/wireless/ath/wcn36xx/dxe.c | 804 +++++++++++++++++++++++++++++++++
1 file changed, 804 insertions(+)
create mode 100644 drivers/net/wireless/ath/wcn36xx/dxe.c
diff --git a/drivers/net/wireless/ath/wcn36xx/dxe.c b/drivers/net/wireless/ath/wcn36xx/dxe.c
new file mode 100644
index 0000000..db1f413
--- /dev/null
+++ b/drivers/net/wireless/ath/wcn36xx/dxe.c
@@ -0,0 +1,804 @@
+/*
+ * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* DXE - DMA transfer engine
+ * we have 2 channels(High prio and Low prio) for TX and 2 channels for RX.
+ * through low channels data packets are transfered
+ * through high channels managment packets are transfered
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/interrupt.h>
+#include "wcn36xx.h"
+#include "txrx.h"
+
+void *wcn36xx_dxe_get_next_bd(struct wcn36xx *wcn, bool is_low)
+{
+ struct wcn36xx_dxe_ch *ch = is_low ?
+ &wcn->dxe_tx_l_ch :
+ &wcn->dxe_tx_h_ch;
+
+ return ch->head_blk_ctl->bd_cpu_addr;
+}
+
+static void wcn36xx_dxe_write_register(struct wcn36xx *wcn, int addr, int data)
+{
+ wcn36xx_dbg(WCN36XX_DBG_DXE,
+ "wcn36xx_dxe_write_register: addr=%x, data=%x\n",
+ addr, data);
+
+ writel(data, wcn->mmio + addr);
+}
+
+static void wcn36xx_dxe_read_register(struct wcn36xx *wcn, int addr, int *data)
+{
+ *data = readl(wcn->mmio + addr);
+
+ wcn36xx_dbg(WCN36XX_DBG_DXE,
+ "wcn36xx_dxe_read_register: addr=%x, data=%x\n",
+ addr, *data);
+}
+
+static void wcn36xx_dxe_free_ctl_block(struct wcn36xx_dxe_ch *ch)
+{
+ struct wcn36xx_dxe_ctl *ctl = ch->head_blk_ctl, *next;
+ int i;
+
+ for (i = 0; i < ch->desc_num && ctl; i++) {
+ next = ctl->next;
+ kfree(ctl);
+ ctl = next;
+ }
+}
+
+static int wcn36xx_dxe_allocate_ctl_block(struct wcn36xx_dxe_ch *ch)
+{
+ struct wcn36xx_dxe_ctl *prev_ctl = NULL;
+ struct wcn36xx_dxe_ctl *cur_ctl = NULL;
+ int i;
+
+ for (i = 0; i < ch->desc_num; i++) {
+ cur_ctl = kzalloc(sizeof(*cur_ctl), GFP_KERNEL);
+ if (!cur_ctl)
+ goto out_fail;
+
+ cur_ctl->ctl_blk_order = i;
+ if (i == 0) {
+ ch->head_blk_ctl = cur_ctl;
+ ch->tail_blk_ctl = cur_ctl;
+ } else if (ch->desc_num - 1 == i) {
+ prev_ctl->next = cur_ctl;
+ cur_ctl->next = ch->head_blk_ctl;
+ } else {
+ prev_ctl->next = cur_ctl;
+ }
+ prev_ctl = cur_ctl;
+ }
+
+ return 0;
+
+out_fail:
+ wcn36xx_dxe_free_ctl_block(ch);
+ return -ENOMEM;
+}
+
+int wcn36xx_dxe_alloc_ctl_blks(struct wcn36xx *wcn)
+{
+ int ret;
+
+ wcn->dxe_tx_l_ch.ch_type = WCN36XX_DXE_CH_TX_L;
+ wcn->dxe_tx_h_ch.ch_type = WCN36XX_DXE_CH_TX_H;
+ wcn->dxe_rx_l_ch.ch_type = WCN36XX_DXE_CH_RX_L;
+ wcn->dxe_rx_h_ch.ch_type = WCN36XX_DXE_CH_RX_H;
+
+ wcn->dxe_tx_l_ch.desc_num = WCN36XX_DXE_CH_DESC_NUMB_TX_L;
+ wcn->dxe_tx_h_ch.desc_num = WCN36XX_DXE_CH_DESC_NUMB_TX_H;
+ wcn->dxe_rx_l_ch.desc_num = WCN36XX_DXE_CH_DESC_NUMB_RX_L;
+ wcn->dxe_rx_h_ch.desc_num = WCN36XX_DXE_CH_DESC_NUMB_RX_H;
+
+ wcn->dxe_tx_l_ch.dxe_wq = WCN36XX_DXE_WQ_TX_L;
+ wcn->dxe_tx_h_ch.dxe_wq = WCN36XX_DXE_WQ_TX_H;
+
+ wcn->dxe_tx_l_ch.ctrl_bd = WCN36XX_DXE_CTRL_TX_L_BD;
+ wcn->dxe_tx_h_ch.ctrl_bd = WCN36XX_DXE_CTRL_TX_H_BD;
+
+ wcn->dxe_tx_l_ch.ctrl_skb = WCN36XX_DXE_CTRL_TX_L_SKB;
+ wcn->dxe_tx_h_ch.ctrl_skb = WCN36XX_DXE_CTRL_TX_H_SKB;
+
+ wcn->dxe_tx_l_ch.reg_ctrl = WCN36XX_DXE_REG_CTL_TX_L;
+ wcn->dxe_tx_h_ch.reg_ctrl = WCN36XX_DXE_REG_CTL_TX_H;
+
+ wcn->dxe_tx_l_ch.def_ctrl = WCN36XX_DXE_CH_DEFAULT_CTL_TX_L;
+ wcn->dxe_tx_h_ch.def_ctrl = WCN36XX_DXE_CH_DEFAULT_CTL_TX_H;
+
+ /* DXE control block allocation */
+ ret = wcn36xx_dxe_allocate_ctl_block(&wcn->dxe_tx_l_ch);
+ if (ret)
+ goto out_err;
+ ret = wcn36xx_dxe_allocate_ctl_block(&wcn->dxe_tx_h_ch);
+ if (ret)
+ goto out_err;
+ ret = wcn36xx_dxe_allocate_ctl_block(&wcn->dxe_rx_l_ch);
+ if (ret)
+ goto out_err;
+ ret = wcn36xx_dxe_allocate_ctl_block(&wcn->dxe_rx_h_ch);
+ if (ret)
+ goto out_err;
+
+ /* Initialize SMSM state Clear TX Enable RING EMPTY STATE */
+ ret = wcn->ctrl_ops->smsm_change_state(
+ WCN36XX_SMSM_WLAN_TX_ENABLE,
+ WCN36XX_SMSM_WLAN_TX_RINGS_EMPTY);
+
+ return 0;
+
+out_err:
+ wcn36xx_err("Failed to allocate DXE control blocks\n");
+ wcn36xx_dxe_free_ctl_blks(wcn);
+ return -ENOMEM;
+}
+
+void wcn36xx_dxe_free_ctl_blks(struct wcn36xx *wcn)
+{
+ wcn36xx_dxe_free_ctl_block(&wcn->dxe_tx_l_ch);
+ wcn36xx_dxe_free_ctl_block(&wcn->dxe_tx_h_ch);
+ wcn36xx_dxe_free_ctl_block(&wcn->dxe_rx_l_ch);
+ wcn36xx_dxe_free_ctl_block(&wcn->dxe_rx_h_ch);
+}
+
+static int wcn36xx_dxe_init_descs(struct wcn36xx_dxe_ch *wcn_ch)
+{
+ struct wcn36xx_dxe_desc *cur_dxe = NULL;
+ struct wcn36xx_dxe_desc *prev_dxe = NULL;
+ struct wcn36xx_dxe_ctl *cur_ctl = NULL;
+ size_t size;
+ int i;
+
+ size = wcn_ch->desc_num * sizeof(struct wcn36xx_dxe_desc);
+ wcn_ch->cpu_addr = dma_alloc_coherent(NULL, size, &wcn_ch->dma_addr,
+ GFP_KERNEL);
+ if (!wcn_ch->cpu_addr)
+ return -ENOMEM;
+
+ memset(wcn_ch->cpu_addr, 0, size);
+
+ cur_dxe = (struct wcn36xx_dxe_desc *)wcn_ch->cpu_addr;
+ cur_ctl = wcn_ch->head_blk_ctl;
+
+ for (i = 0; i < wcn_ch->desc_num; i++) {
+ cur_ctl->desc = cur_dxe;
+ cur_ctl->desc_phy_addr = wcn_ch->dma_addr +
+ i * sizeof(struct wcn36xx_dxe_desc);
+
+ switch (wcn_ch->ch_type) {
+ case WCN36XX_DXE_CH_TX_L:
+ cur_dxe->ctrl = WCN36XX_DXE_CTRL_TX_L;
+ cur_dxe->dst_addr_l = WCN36XX_DXE_WQ_TX_L;
+ break;
+ case WCN36XX_DXE_CH_TX_H:
+ cur_dxe->ctrl = WCN36XX_DXE_CTRL_TX_H;
+ cur_dxe->dst_addr_l = WCN36XX_DXE_WQ_TX_H;
+ break;
+ case WCN36XX_DXE_CH_RX_L:
+ cur_dxe->ctrl = WCN36XX_DXE_CTRL_RX_L;
+ cur_dxe->src_addr_l = WCN36XX_DXE_WQ_RX_L;
+ break;
+ case WCN36XX_DXE_CH_RX_H:
+ cur_dxe->ctrl = WCN36XX_DXE_CTRL_RX_H;
+ cur_dxe->src_addr_l = WCN36XX_DXE_WQ_RX_H;
+ break;
+ }
+ if (0 == i) {
+ cur_dxe->phy_next_l = 0;
+ } else if ((0 < i) && (i < wcn_ch->desc_num - 1)) {
+ prev_dxe->phy_next_l =
+ cur_ctl->desc_phy_addr;
+ } else if (i == (wcn_ch->desc_num - 1)) {
+ prev_dxe->phy_next_l =
+ cur_ctl->desc_phy_addr;
+ cur_dxe->phy_next_l =
+ wcn_ch->head_blk_ctl->desc_phy_addr;
+ }
+ cur_ctl = cur_ctl->next;
+ prev_dxe = cur_dxe;
+ cur_dxe++;
+ }
+
+ return 0;
+}
+
+static void wcn36xx_dxe_init_tx_bd(struct wcn36xx_dxe_ch *ch,
+ struct wcn36xx_dxe_mem_pool *pool)
+{
+ int i, chunk_size = pool->chunk_size;
+ dma_addr_t bd_phy_addr = pool->phy_addr;
+ void *bd_cpu_addr = pool->virt_addr;
+ struct wcn36xx_dxe_ctl *cur = ch->head_blk_ctl;
+
+ for (i = 0; i < ch->desc_num; i++) {
+ /* Only every second dxe needs a bd pointer,
+ the other will point to the skb data */
+ if (!(i & 1)) {
+ cur->bd_phy_addr = bd_phy_addr;
+ cur->bd_cpu_addr = bd_cpu_addr;
+ bd_phy_addr += chunk_size;
+ bd_cpu_addr += chunk_size;
+ } else {
+ cur->bd_phy_addr = 0;
+ cur->bd_cpu_addr = NULL;
+ }
+ cur = cur->next;
+ }
+}
+
+static int wcn36xx_dxe_enable_ch_int(struct wcn36xx *wcn, u16 wcn_ch)
+{
+ int reg_data = 0;
+
+ wcn36xx_dxe_read_register(wcn,
+ WCN36XX_DXE_INT_MASK_REG,
+ ®_data);
+
+ reg_data |= wcn_ch;
+
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_INT_MASK_REG,
+ (int)reg_data);
+ return 0;
+}
+
+static int wcn36xx_dxe_fill_skb(struct wcn36xx_dxe_ctl *ctl)
+{
+ struct wcn36xx_dxe_desc *dxe = ctl->desc;
+ struct sk_buff *skb;
+
+ skb = alloc_skb(WCN36XX_PKT_SIZE, GFP_ATOMIC);
+ if (skb == NULL)
+ return -ENOMEM;
+
+ dxe->dst_addr_l = dma_map_single(NULL,
+ skb_tail_pointer(skb),
+ WCN36XX_PKT_SIZE,
+ DMA_FROM_DEVICE);
+ ctl->skb = skb;
+
+ return 0;
+}
+
+static int wcn36xx_dxe_ch_alloc_skb(struct wcn36xx *wcn,
+ struct wcn36xx_dxe_ch *wcn_ch)
+{
+ int i;
+ struct wcn36xx_dxe_ctl *cur_ctl = NULL;
+
+ cur_ctl = wcn_ch->head_blk_ctl;
+
+ for (i = 0; i < wcn_ch->desc_num; i++) {
+ wcn36xx_dxe_fill_skb(cur_ctl);
+ cur_ctl = cur_ctl->next;
+ }
+
+ return 0;
+}
+
+static void wcn36xx_dxe_ch_free_skbs(struct wcn36xx *wcn,
+ struct wcn36xx_dxe_ch *wcn_ch)
+{
+ struct wcn36xx_dxe_ctl *cur = wcn_ch->head_blk_ctl;
+ int i;
+
+ for (i = 0; i < wcn_ch->desc_num; i++) {
+ kfree_skb(cur->skb);
+ cur = cur->next;
+ }
+}
+
+void wcn36xx_dxe_tx_ack_ind(struct wcn36xx *wcn, u32 status)
+{
+ struct ieee80211_tx_info *info;
+ struct sk_buff *skb;
+ unsigned long flags;
+
+ spin_lock_irqsave(&wcn->dxe_lock, flags);
+ skb = wcn->tx_ack_skb;
+ wcn->tx_ack_skb = NULL;
+ spin_unlock_irqrestore(&wcn->dxe_lock, flags);
+
+ if (!skb) {
+ wcn36xx_warn("Spurious TX complete indication\n");
+ return;
+ }
+
+ info = IEEE80211_SKB_CB(skb);
+
+ if (status == 1)
+ info->flags |= IEEE80211_TX_STAT_ACK;
+
+ wcn36xx_dbg(WCN36XX_DBG_DXE, "dxe tx ack status: %d\n", status);
+
+ ieee80211_tx_status_irqsafe(wcn->hw, skb);
+ ieee80211_wake_queues(wcn->hw);
+}
+
+static void reap_tx_dxes(struct wcn36xx *wcn, struct wcn36xx_dxe_ch *ch)
+{
+ struct wcn36xx_dxe_ctl *ctl = ch->tail_blk_ctl;
+ struct ieee80211_tx_info *info;
+ unsigned long flags;
+
+ /*
+ * Make at least one loop of do-while because in case ring is
+ * completely full head and tail are pointing to the same element
+ * and while-do will not make any cycles.
+ */
+ do {
+ if (ctl->skb) {
+ dma_unmap_single(NULL, ctl->desc->src_addr_l,
+ ctl->skb->len, DMA_TO_DEVICE);
+ info = IEEE80211_SKB_CB(ctl->skb);
+ if (!(info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)) {
+ /* Keep frame until TX status comes */
+ ieee80211_free_txskb(wcn->hw, ctl->skb);
+ }
+ spin_lock_irqsave(&ctl->skb_lock, flags);
+ if (wcn->queues_stopped) {
+ wcn->queues_stopped = false;
+ ieee80211_wake_queues(wcn->hw);
+ }
+ spin_unlock_irqrestore(&ctl->skb_lock, flags);
+
+ ctl->skb = NULL;
+ }
+ ctl = ctl->next;
+ } while (ctl != ch->head_blk_ctl &&
+ !(ctl->desc->ctrl & WCN36XX_DXE_CTRL_VALID_MASK));
+
+ ch->tail_blk_ctl = ctl;
+}
+
+static irqreturn_t wcn36xx_irq_tx_complete(int irq, void *dev)
+{
+ struct wcn36xx *wcn = (struct wcn36xx *)dev;
+ int int_src, int_reason;
+
+ wcn36xx_dxe_read_register(wcn, WCN36XX_DXE_INT_SRC_RAW_REG, &int_src);
+
+ if (int_src & WCN36XX_INT_MASK_CHAN_TX_H) {
+ wcn36xx_dxe_read_register(wcn,
+ WCN36XX_DXE_CH_STATUS_REG_ADDR_TX_H,
+ &int_reason);
+
+ /* TODO: Check int_reason */
+
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_0_INT_CLR,
+ WCN36XX_INT_MASK_CHAN_TX_H);
+
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_0_INT_ED_CLR,
+ WCN36XX_INT_MASK_CHAN_TX_H);
+ wcn36xx_dbg(WCN36XX_DBG_DXE, "dxe tx ready high\n");
+ reap_tx_dxes(wcn, &wcn->dxe_tx_h_ch);
+ }
+
+ if (int_src & WCN36XX_INT_MASK_CHAN_TX_L) {
+ wcn36xx_dxe_read_register(wcn,
+ WCN36XX_DXE_CH_STATUS_REG_ADDR_TX_L,
+ &int_reason);
+ /* TODO: Check int_reason */
+
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_0_INT_CLR,
+ WCN36XX_INT_MASK_CHAN_TX_L);
+
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_0_INT_ED_CLR,
+ WCN36XX_INT_MASK_CHAN_TX_L);
+ wcn36xx_dbg(WCN36XX_DBG_DXE, "dxe tx ready low\n");
+ reap_tx_dxes(wcn, &wcn->dxe_tx_l_ch);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t wcn36xx_irq_rx_ready(int irq, void *dev)
+{
+ struct wcn36xx *wcn = (struct wcn36xx *)dev;
+
+ disable_irq_nosync(wcn->rx_irq);
+ wcn36xx_dxe_rx_frame(wcn);
+ enable_irq(wcn->rx_irq);
+ return IRQ_HANDLED;
+}
+
+static int wcn36xx_dxe_request_irqs(struct wcn36xx *wcn)
+{
+ int ret;
+
+ ret = request_irq(wcn->tx_irq, wcn36xx_irq_tx_complete,
+ IRQF_TRIGGER_HIGH, "wcn36xx_tx", wcn);
+ if (ret) {
+ wcn36xx_err("failed to alloc tx irq\n");
+ goto out_err;
+ }
+
+ ret = request_irq(wcn->rx_irq, wcn36xx_irq_rx_ready, IRQF_TRIGGER_HIGH,
+ "wcn36xx_rx", wcn);
+ if (ret) {
+ wcn36xx_err("failed to alloc rx irq\n");
+ goto out_txirq;
+ }
+
+ enable_irq_wake(wcn->rx_irq);
+
+ return 0;
+
+out_txirq:
+ free_irq(wcn->tx_irq, wcn);
+out_err:
+ return ret;
+
+}
+
+static int wcn36xx_rx_handle_packets(struct wcn36xx *wcn,
+ struct wcn36xx_dxe_ch *ch)
+{
+ struct wcn36xx_dxe_ctl *ctl = ch->head_blk_ctl;
+ struct wcn36xx_dxe_desc *dxe = ctl->desc;
+ dma_addr_t dma_addr;
+ struct sk_buff *skb;
+
+ while (!(dxe->ctrl & WCN36XX_DXE_CTRL_VALID_MASK)) {
+ skb = ctl->skb;
+ dma_addr = dxe->dst_addr_l;
+ wcn36xx_dxe_fill_skb(ctl);
+
+ switch (ch->ch_type) {
+ case WCN36XX_DXE_CH_RX_L:
+ dxe->ctrl = WCN36XX_DXE_CTRL_RX_L;
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_ENCH_ADDR,
+ WCN36XX_DXE_INT_CH1_MASK);
+ break;
+ case WCN36XX_DXE_CH_RX_H:
+ dxe->ctrl = WCN36XX_DXE_CTRL_RX_H;
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_ENCH_ADDR,
+ WCN36XX_DXE_INT_CH3_MASK);
+ break;
+ default:
+ wcn36xx_warn("Unknown channel\n");
+ }
+
+ dma_unmap_single(NULL, dma_addr, WCN36XX_PKT_SIZE,
+ DMA_FROM_DEVICE);
+ wcn36xx_rx_skb(wcn, skb);
+ ctl = ctl->next;
+ dxe = ctl->desc;
+ }
+
+ ch->head_blk_ctl = ctl;
+
+ return 0;
+}
+
+void wcn36xx_dxe_rx_frame(struct wcn36xx *wcn)
+{
+ int int_src;
+
+ wcn36xx_dxe_read_register(wcn, WCN36XX_DXE_INT_SRC_RAW_REG, &int_src);
+
+ /* RX_LOW_PRI */
+ if (int_src & WCN36XX_DXE_INT_CH1_MASK) {
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_0_INT_CLR,
+ WCN36XX_DXE_INT_CH1_MASK);
+ wcn36xx_rx_handle_packets(wcn, &(wcn->dxe_rx_l_ch));
+ }
+
+ /* RX_HIGH_PRI */
+ if (int_src & WCN36XX_DXE_INT_CH3_MASK) {
+ /* Clean up all the INT within this channel */
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_0_INT_CLR,
+ WCN36XX_DXE_INT_CH3_MASK);
+ wcn36xx_rx_handle_packets(wcn, &(wcn->dxe_rx_h_ch));
+ }
+
+ if (!int_src)
+ wcn36xx_warn("No DXE interrupt pending\n");
+}
+
+int wcn36xx_dxe_allocate_mem_pools(struct wcn36xx *wcn)
+{
+ size_t s;
+ void *cpu_addr;
+
+ /* Allocate BD headers for MGMT frames */
+
+ /* Where this come from ask QC */
+ wcn->mgmt_mem_pool.chunk_size = WCN36XX_BD_CHUNK_SIZE +
+ 16 - (WCN36XX_BD_CHUNK_SIZE % 8);
+
+ s = wcn->mgmt_mem_pool.chunk_size * WCN36XX_DXE_CH_DESC_NUMB_TX_H;
+ cpu_addr = dma_alloc_coherent(NULL, s, &wcn->mgmt_mem_pool.phy_addr,
+ GFP_KERNEL);
+ if (!cpu_addr)
+ goto out_err;
+
+ wcn->mgmt_mem_pool.virt_addr = cpu_addr;
+ memset(cpu_addr, 0, s);
+
+ /* Allocate BD headers for DATA frames */
+
+ /* Where this come from ask QC */
+ wcn->data_mem_pool.chunk_size = WCN36XX_BD_CHUNK_SIZE +
+ 16 - (WCN36XX_BD_CHUNK_SIZE % 8);
+
+ s = wcn->data_mem_pool.chunk_size * WCN36XX_DXE_CH_DESC_NUMB_TX_L;
+ cpu_addr = dma_alloc_coherent(NULL, s, &wcn->data_mem_pool.phy_addr,
+ GFP_KERNEL);
+ if (!cpu_addr)
+ goto out_err;
+
+ wcn->data_mem_pool.virt_addr = cpu_addr;
+ memset(cpu_addr, 0, s);
+
+ return 0;
+
+out_err:
+ wcn36xx_dxe_free_mem_pools(wcn);
+ wcn36xx_err("Failed to allocate BD mempool\n");
+ return -ENOMEM;
+}
+
+void wcn36xx_dxe_free_mem_pools(struct wcn36xx *wcn)
+{
+ if (wcn->mgmt_mem_pool.virt_addr)
+ dma_free_coherent(NULL, wcn->mgmt_mem_pool.chunk_size *
+ WCN36XX_DXE_CH_DESC_NUMB_TX_H,
+ wcn->mgmt_mem_pool.virt_addr,
+ wcn->mgmt_mem_pool.phy_addr);
+
+ if (wcn->data_mem_pool.virt_addr) {
+ dma_free_coherent(NULL, wcn->data_mem_pool.chunk_size *
+ WCN36XX_DXE_CH_DESC_NUMB_TX_L,
+ wcn->data_mem_pool.virt_addr,
+ wcn->data_mem_pool.phy_addr);
+ }
+}
+
+int wcn36xx_dxe_tx_frame(struct wcn36xx *wcn,
+ struct sk_buff *skb,
+ bool is_low)
+{
+ struct wcn36xx_dxe_ctl *ctl = NULL;
+ struct wcn36xx_dxe_desc *desc = NULL;
+ struct wcn36xx_dxe_ch *ch = NULL;
+ unsigned long flags;
+
+ ch = is_low ? &wcn->dxe_tx_l_ch : &wcn->dxe_tx_h_ch;
+
+ ctl = ch->head_blk_ctl;
+
+ spin_lock_irqsave(&ctl->next->skb_lock, flags);
+
+ /*
+ * If skb is not null that means that we reached the tail of the ring
+ * hence ring is full. Stop queues to let mac80211 back off until ring
+ * has an empty slot again.
+ */
+ if (NULL != ctl->next->skb) {
+ ieee80211_stop_queues(wcn->hw);
+ wcn->queues_stopped = true;
+ spin_unlock_irqrestore(&ctl->next->skb_lock, flags);
+ return -EBUSY;
+ }
+ spin_unlock_irqrestore(&ctl->next->skb_lock, flags);
+
+ ctl->skb = NULL;
+ desc = ctl->desc;
+
+ /* Set source address of the BD we send */
+ desc->src_addr_l = ctl->bd_phy_addr;
+
+ desc->dst_addr_l = ch->dxe_wq;
+ desc->fr_len = sizeof(struct wcn36xx_tx_bd);
+ desc->ctrl = ch->ctrl_bd;
+
+ wcn36xx_dbg(WCN36XX_DBG_DXE, "DXE TX\n");
+
+ wcn36xx_dbg_dump(WCN36XX_DBG_DXE_DUMP, "DESC1 >>> ",
+ (char *)desc, sizeof(*desc));
+ wcn36xx_dbg_dump(WCN36XX_DBG_DXE_DUMP,
+ "BD >>> ", (char *)ctl->bd_cpu_addr,
+ sizeof(struct wcn36xx_tx_bd));
+
+ /* Set source address of the SKB we send */
+ ctl = ctl->next;
+ ctl->skb = skb;
+ desc = ctl->desc;
+ if (ctl->bd_cpu_addr) {
+ wcn36xx_err("bd_cpu_addr cannot be NULL for skb DXE\n");
+ return -EINVAL;
+ }
+
+ desc->src_addr_l = dma_map_single(NULL,
+ ctl->skb->data,
+ ctl->skb->len,
+ DMA_TO_DEVICE);
+
+ desc->dst_addr_l = ch->dxe_wq;
+ desc->fr_len = ctl->skb->len;
+
+ /* set dxe descriptor to VALID */
+ desc->ctrl = ch->ctrl_skb;
+
+ wcn36xx_dbg_dump(WCN36XX_DBG_DXE_DUMP, "DESC2 >>> ",
+ (char *)desc, sizeof(*desc));
+ wcn36xx_dbg_dump(WCN36XX_DBG_DXE_DUMP, "SKB >>> ",
+ (char *)ctl->skb->data, ctl->skb->len);
+
+ /* Move the head of the ring to the next empty descriptor */
+ ch->head_blk_ctl = ctl->next;
+
+ /*
+ * When connected and trying to send data frame chip can be in sleep
+ * mode and writing to the register will not wake up the chip. Instead
+ * notify chip about new frame through SMSM bus.
+ */
+ if (wcn->pw_state == WCN36XX_BMPS) {
+ wcn->ctrl_ops->smsm_change_state(
+ 0,
+ WCN36XX_SMSM_WLAN_TX_ENABLE);
+ } else {
+ /* indicate End Of Packet and generate interrupt on descriptor
+ * done.
+ */
+ wcn36xx_dxe_write_register(wcn,
+ ch->reg_ctrl, ch->def_ctrl);
+ }
+
+ return 0;
+}
+
+int wcn36xx_dxe_init(struct wcn36xx *wcn)
+{
+ int reg_data = 0, ret;
+
+ reg_data = WCN36XX_DXE_REG_RESET;
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_REG_CSR_RESET, reg_data);
+
+ /* Setting interrupt path */
+ reg_data = WCN36XX_DXE_CCU_INT;
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_REG_CCU_INT, reg_data);
+
+ /***************************************/
+ /* Init descriptors for TX LOW channel */
+ /***************************************/
+ wcn36xx_dxe_init_descs(&wcn->dxe_tx_l_ch);
+ wcn36xx_dxe_init_tx_bd(&wcn->dxe_tx_l_ch, &wcn->data_mem_pool);
+
+ /* Write channel head to a NEXT register */
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_CH_NEXT_DESC_ADDR_TX_L,
+ wcn->dxe_tx_l_ch.head_blk_ctl->desc_phy_addr);
+
+ /* Program DMA destination addr for TX LOW */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_CH_DEST_ADDR_TX_L,
+ WCN36XX_DXE_WQ_TX_L);
+
+ wcn36xx_dxe_read_register(wcn, WCN36XX_DXE_REG_CH_EN, ®_data);
+ wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_L);
+
+ /***************************************/
+ /* Init descriptors for TX HIGH channel */
+ /***************************************/
+ wcn36xx_dxe_init_descs(&wcn->dxe_tx_h_ch);
+ wcn36xx_dxe_init_tx_bd(&wcn->dxe_tx_h_ch, &wcn->mgmt_mem_pool);
+
+ /* Write channel head to a NEXT register */
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_CH_NEXT_DESC_ADDR_TX_H,
+ wcn->dxe_tx_h_ch.head_blk_ctl->desc_phy_addr);
+
+ /* Program DMA destination addr for TX HIGH */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_CH_DEST_ADDR_TX_H,
+ WCN36XX_DXE_WQ_TX_H);
+
+ wcn36xx_dxe_read_register(wcn, WCN36XX_DXE_REG_CH_EN, ®_data);
+
+ /* Enable channel interrupts */
+ wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_TX_H);
+
+ /***************************************/
+ /* Init descriptors for RX LOW channel */
+ /***************************************/
+ wcn36xx_dxe_init_descs(&wcn->dxe_rx_l_ch);
+
+ /* For RX we need to preallocated buffers */
+ wcn36xx_dxe_ch_alloc_skb(wcn, &wcn->dxe_rx_l_ch);
+
+ /* Write channel head to a NEXT register */
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_CH_NEXT_DESC_ADDR_RX_L,
+ wcn->dxe_rx_l_ch.head_blk_ctl->desc_phy_addr);
+
+ /* Write DMA source address */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_CH_SRC_ADDR_RX_L,
+ WCN36XX_DXE_WQ_RX_L);
+
+ /* Program preallocated destination address */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_CH_DEST_ADDR_RX_L,
+ wcn->dxe_rx_l_ch.head_blk_ctl->desc->phy_next_l);
+
+ /* Enable default control registers */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_REG_CTL_RX_L,
+ WCN36XX_DXE_CH_DEFAULT_CTL_RX_L);
+
+ /* Enable channel interrupts */
+ wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_L);
+
+ /***************************************/
+ /* Init descriptors for RX HIGH channel */
+ /***************************************/
+ wcn36xx_dxe_init_descs(&wcn->dxe_rx_h_ch);
+
+ /* For RX we need to prealocat buffers */
+ wcn36xx_dxe_ch_alloc_skb(wcn, &wcn->dxe_rx_h_ch);
+
+ /* Write chanel head to a NEXT register */
+ wcn36xx_dxe_write_register(wcn, WCN36XX_DXE_CH_NEXT_DESC_ADDR_RX_H,
+ wcn->dxe_rx_h_ch.head_blk_ctl->desc_phy_addr);
+
+ /* Write DMA source address */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_CH_SRC_ADDR_RX_H,
+ WCN36XX_DXE_WQ_RX_H);
+
+ /* Program preallocated destination address */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_CH_DEST_ADDR_RX_H,
+ wcn->dxe_rx_h_ch.head_blk_ctl->desc->phy_next_l);
+
+ /* Enable default control registers */
+ wcn36xx_dxe_write_register(wcn,
+ WCN36XX_DXE_REG_CTL_RX_H,
+ WCN36XX_DXE_CH_DEFAULT_CTL_RX_H);
+
+ /* Enable channel interrupts */
+ wcn36xx_dxe_enable_ch_int(wcn, WCN36XX_INT_MASK_CHAN_RX_H);
+
+ ret = wcn36xx_dxe_request_irqs(wcn);
+ if (ret < 0)
+ goto out_err;
+
+ return 0;
+
+out_err:
+ return ret;
+}
+
+void wcn36xx_dxe_deinit(struct wcn36xx *wcn)
+{
+ free_irq(wcn->tx_irq, wcn);
+ free_irq(wcn->rx_irq, wcn);
+
+ if (wcn->tx_ack_skb) {
+ ieee80211_tx_status_irqsafe(wcn->hw, wcn->tx_ack_skb);
+ wcn->tx_ack_skb = NULL;
+ }
+
+ wcn36xx_dxe_ch_free_skbs(wcn, &wcn->dxe_rx_l_ch);
+ wcn36xx_dxe_ch_free_skbs(wcn, &wcn->dxe_rx_h_ch);
+}
--
1.8.2.2
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