373 lines
8.8 KiB
C
373 lines
8.8 KiB
C
/*
|
|
* Copyright (c) 2012 Qualcomm Atheros, Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/if_arp.h>
|
|
|
|
#include "wil6210.h"
|
|
|
|
/*
|
|
* Due to a hardware issue,
|
|
* one has to read/write to/from NIC in 32-bit chunks;
|
|
* regular memcpy_fromio and siblings will
|
|
* not work on 64-bit platform - it uses 64-bit transactions
|
|
*
|
|
* Force 32-bit transactions to enable NIC on 64-bit platforms
|
|
*
|
|
* To avoid byte swap on big endian host, __raw_{read|write}l
|
|
* should be used - {read|write}l would swap bytes to provide
|
|
* little endian on PCI value in host endianness.
|
|
*/
|
|
void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
|
|
size_t count)
|
|
{
|
|
u32 *d = dst;
|
|
const volatile u32 __iomem *s = src;
|
|
|
|
/* size_t is unsigned, if (count%4 != 0) it will wrap */
|
|
for (count += 4; count > 4; count -= 4)
|
|
*d++ = __raw_readl(s++);
|
|
}
|
|
|
|
void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
|
|
size_t count)
|
|
{
|
|
volatile u32 __iomem *d = dst;
|
|
const u32 *s = src;
|
|
|
|
for (count += 4; count > 4; count -= 4)
|
|
__raw_writel(*s++, d++);
|
|
}
|
|
|
|
static void _wil6210_disconnect(struct wil6210_priv *wil, void *bssid)
|
|
{
|
|
uint i;
|
|
struct net_device *ndev = wil_to_ndev(wil);
|
|
|
|
wil_dbg_misc(wil, "%s()\n", __func__);
|
|
|
|
wil_link_off(wil);
|
|
if (test_bit(wil_status_fwconnected, &wil->status)) {
|
|
clear_bit(wil_status_fwconnected, &wil->status);
|
|
cfg80211_disconnected(ndev,
|
|
WLAN_STATUS_UNSPECIFIED_FAILURE,
|
|
NULL, 0, GFP_KERNEL);
|
|
} else if (test_bit(wil_status_fwconnecting, &wil->status)) {
|
|
cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
|
|
WLAN_STATUS_UNSPECIFIED_FAILURE,
|
|
GFP_KERNEL);
|
|
}
|
|
clear_bit(wil_status_fwconnecting, &wil->status);
|
|
for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++)
|
|
wil_vring_fini_tx(wil, i);
|
|
|
|
clear_bit(wil_status_dontscan, &wil->status);
|
|
}
|
|
|
|
static void wil_disconnect_worker(struct work_struct *work)
|
|
{
|
|
struct wil6210_priv *wil = container_of(work,
|
|
struct wil6210_priv, disconnect_worker);
|
|
|
|
_wil6210_disconnect(wil, NULL);
|
|
}
|
|
|
|
static void wil_connect_timer_fn(ulong x)
|
|
{
|
|
struct wil6210_priv *wil = (void *)x;
|
|
|
|
wil_dbg_misc(wil, "Connect timeout\n");
|
|
|
|
/* reschedule to thread context - disconnect won't
|
|
* run from atomic context
|
|
*/
|
|
schedule_work(&wil->disconnect_worker);
|
|
}
|
|
|
|
static void wil_connect_worker(struct work_struct *work)
|
|
{
|
|
int rc;
|
|
struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
|
|
connect_worker);
|
|
int cid = wil->pending_connect_cid;
|
|
|
|
if (cid < 0) {
|
|
wil_err(wil, "No connection pending\n");
|
|
return;
|
|
}
|
|
|
|
wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid);
|
|
|
|
rc = wil_vring_init_tx(wil, 0, WIL6210_TX_RING_SIZE, cid, 0);
|
|
wil->pending_connect_cid = -1;
|
|
if (rc == 0)
|
|
wil_link_on(wil);
|
|
}
|
|
|
|
int wil_priv_init(struct wil6210_priv *wil)
|
|
{
|
|
wil_dbg_misc(wil, "%s()\n", __func__);
|
|
|
|
mutex_init(&wil->mutex);
|
|
mutex_init(&wil->wmi_mutex);
|
|
|
|
init_completion(&wil->wmi_ready);
|
|
|
|
wil->pending_connect_cid = -1;
|
|
setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
|
|
|
|
INIT_WORK(&wil->connect_worker, wil_connect_worker);
|
|
INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker);
|
|
INIT_WORK(&wil->wmi_event_worker, wmi_event_worker);
|
|
|
|
INIT_LIST_HEAD(&wil->pending_wmi_ev);
|
|
spin_lock_init(&wil->wmi_ev_lock);
|
|
|
|
wil->wmi_wq = create_singlethread_workqueue(WIL_NAME"_wmi");
|
|
if (!wil->wmi_wq)
|
|
return -EAGAIN;
|
|
|
|
wil->wmi_wq_conn = create_singlethread_workqueue(WIL_NAME"_connect");
|
|
if (!wil->wmi_wq_conn) {
|
|
destroy_workqueue(wil->wmi_wq);
|
|
return -EAGAIN;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void wil6210_disconnect(struct wil6210_priv *wil, void *bssid)
|
|
{
|
|
del_timer_sync(&wil->connect_timer);
|
|
_wil6210_disconnect(wil, bssid);
|
|
}
|
|
|
|
void wil_priv_deinit(struct wil6210_priv *wil)
|
|
{
|
|
cancel_work_sync(&wil->disconnect_worker);
|
|
wil6210_disconnect(wil, NULL);
|
|
wmi_event_flush(wil);
|
|
destroy_workqueue(wil->wmi_wq_conn);
|
|
destroy_workqueue(wil->wmi_wq);
|
|
}
|
|
|
|
static void wil_target_reset(struct wil6210_priv *wil)
|
|
{
|
|
wil_dbg_misc(wil, "Resetting...\n");
|
|
|
|
/* register write */
|
|
#define W(a, v) iowrite32(v, wil->csr + HOSTADDR(a))
|
|
/* register set = read, OR, write */
|
|
#define S(a, v) iowrite32(ioread32(wil->csr + HOSTADDR(a)) | v, \
|
|
wil->csr + HOSTADDR(a))
|
|
|
|
/* hpal_perst_from_pad_src_n_mask */
|
|
S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(6));
|
|
/* car_perst_rst_src_n_mask */
|
|
S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(7));
|
|
|
|
W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */
|
|
W(RGF_USER_USER_CPU_0, BIT(1)); /* user_cpu_man_rst */
|
|
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000170);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FC00);
|
|
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
|
|
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00000080);
|
|
W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
|
|
|
|
wil_dbg_misc(wil, "Reset completed\n");
|
|
|
|
#undef W
|
|
#undef S
|
|
}
|
|
|
|
void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r)
|
|
{
|
|
le32_to_cpus(&r->base);
|
|
le16_to_cpus(&r->entry_size);
|
|
le16_to_cpus(&r->size);
|
|
le32_to_cpus(&r->tail);
|
|
le32_to_cpus(&r->head);
|
|
}
|
|
|
|
static int wil_wait_for_fw_ready(struct wil6210_priv *wil)
|
|
{
|
|
ulong to = msecs_to_jiffies(1000);
|
|
ulong left = wait_for_completion_timeout(&wil->wmi_ready, to);
|
|
if (0 == left) {
|
|
wil_err(wil, "Firmware not ready\n");
|
|
return -ETIME;
|
|
} else {
|
|
wil_dbg_misc(wil, "FW ready after %d ms\n",
|
|
jiffies_to_msecs(to-left));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We reset all the structures, and we reset the UMAC.
|
|
* After calling this routine, you're expected to reload
|
|
* the firmware.
|
|
*/
|
|
int wil_reset(struct wil6210_priv *wil)
|
|
{
|
|
int rc;
|
|
|
|
cancel_work_sync(&wil->disconnect_worker);
|
|
wil6210_disconnect(wil, NULL);
|
|
|
|
wil6210_disable_irq(wil);
|
|
wil->status = 0;
|
|
|
|
wmi_event_flush(wil);
|
|
|
|
flush_workqueue(wil->wmi_wq_conn);
|
|
flush_workqueue(wil->wmi_wq);
|
|
|
|
/* TODO: put MAC in reset */
|
|
wil_target_reset(wil);
|
|
|
|
/* init after reset */
|
|
wil->pending_connect_cid = -1;
|
|
INIT_COMPLETION(wil->wmi_ready);
|
|
|
|
/* TODO: release MAC reset */
|
|
wil6210_enable_irq(wil);
|
|
|
|
/* we just started MAC, wait for FW ready */
|
|
rc = wil_wait_for_fw_ready(wil);
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
void wil_link_on(struct wil6210_priv *wil)
|
|
{
|
|
struct net_device *ndev = wil_to_ndev(wil);
|
|
|
|
wil_dbg_misc(wil, "%s()\n", __func__);
|
|
|
|
netif_carrier_on(ndev);
|
|
netif_tx_wake_all_queues(ndev);
|
|
}
|
|
|
|
void wil_link_off(struct wil6210_priv *wil)
|
|
{
|
|
struct net_device *ndev = wil_to_ndev(wil);
|
|
|
|
wil_dbg_misc(wil, "%s()\n", __func__);
|
|
|
|
netif_tx_stop_all_queues(ndev);
|
|
netif_carrier_off(ndev);
|
|
}
|
|
|
|
static int __wil_up(struct wil6210_priv *wil)
|
|
{
|
|
struct net_device *ndev = wil_to_ndev(wil);
|
|
struct wireless_dev *wdev = wil->wdev;
|
|
int rc;
|
|
|
|
rc = wil_reset(wil);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* Rx VRING. After MAC and beacon */
|
|
rc = wil_rx_init(wil);
|
|
if (rc)
|
|
return rc;
|
|
|
|
switch (wdev->iftype) {
|
|
case NL80211_IFTYPE_STATION:
|
|
wil_dbg_misc(wil, "type: STATION\n");
|
|
ndev->type = ARPHRD_ETHER;
|
|
break;
|
|
case NL80211_IFTYPE_AP:
|
|
wil_dbg_misc(wil, "type: AP\n");
|
|
ndev->type = ARPHRD_ETHER;
|
|
break;
|
|
case NL80211_IFTYPE_P2P_CLIENT:
|
|
wil_dbg_misc(wil, "type: P2P_CLIENT\n");
|
|
ndev->type = ARPHRD_ETHER;
|
|
break;
|
|
case NL80211_IFTYPE_P2P_GO:
|
|
wil_dbg_misc(wil, "type: P2P_GO\n");
|
|
ndev->type = ARPHRD_ETHER;
|
|
break;
|
|
case NL80211_IFTYPE_MONITOR:
|
|
wil_dbg_misc(wil, "type: Monitor\n");
|
|
ndev->type = ARPHRD_IEEE80211_RADIOTAP;
|
|
/* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
|
|
break;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
/* MAC address - pre-requisite for other commands */
|
|
wmi_set_mac_address(wil, ndev->dev_addr);
|
|
|
|
|
|
napi_enable(&wil->napi_rx);
|
|
napi_enable(&wil->napi_tx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wil_up(struct wil6210_priv *wil)
|
|
{
|
|
int rc;
|
|
|
|
mutex_lock(&wil->mutex);
|
|
rc = __wil_up(wil);
|
|
mutex_unlock(&wil->mutex);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int __wil_down(struct wil6210_priv *wil)
|
|
{
|
|
napi_disable(&wil->napi_rx);
|
|
napi_disable(&wil->napi_tx);
|
|
|
|
if (wil->scan_request) {
|
|
cfg80211_scan_done(wil->scan_request, true);
|
|
wil->scan_request = NULL;
|
|
}
|
|
|
|
wil6210_disconnect(wil, NULL);
|
|
wil_rx_fini(wil);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wil_down(struct wil6210_priv *wil)
|
|
{
|
|
int rc;
|
|
|
|
mutex_lock(&wil->mutex);
|
|
rc = __wil_down(wil);
|
|
mutex_unlock(&wil->mutex);
|
|
|
|
return rc;
|
|
}
|