diff options
52 files changed, 1101 insertions, 1027 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc b/Documentation/ABI/testing/sysfs-class-uwb_rc index a0d18dbeb7a..6a5fd072849 100644 --- a/Documentation/ABI/testing/sysfs-class-uwb_rc +++ b/Documentation/ABI/testing/sysfs-class-uwb_rc @@ -32,14 +32,16 @@ Contact: linux-usb@vger.kernel.org Description: Write: - <channel> [<bpst offset>] + <channel> - to start beaconing on a specific channel, or stop - beaconing if <channel> is -1. Valid channels depends - on the radio controller's supported band groups. + to force a specific channel to be used when beaconing, + or, if <channel> is -1, to prohibit beaconing. If + <channel> is 0, then the default channel selection + algorithm will be used. Valid channels depends on the + radio controller's supported band groups. - <bpst offset> may be used to try and join a specific - beacon group if more than one was found during a scan. + Reading returns the currently active channel, or -1 if + the radio controller is not beaconing. What: /sys/class/uwb_rc/uwbN/scan Date: July 2008 diff --git a/Documentation/usb/wusb-cbaf b/Documentation/usb/wusb-cbaf index 2e78b70f3ad..426ddaaef96 100644 --- a/Documentation/usb/wusb-cbaf +++ b/Documentation/usb/wusb-cbaf @@ -80,12 +80,6 @@ case $1 in start) for dev in ${2:-$hdevs} do - uwb_rc=$(readlink -f $dev/uwb_rc) - if cat $uwb_rc/beacon | grep -q -- "-1" - then - echo 13 0 > $uwb_rc/beacon - echo I: started beaconing on ch 13 on $(basename $uwb_rc) >&2 - fi echo $host_CHID > $dev/wusb_chid echo I: started host $(basename $dev) >&2 done @@ -95,9 +89,6 @@ case $1 in do echo 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > $dev/wusb_chid echo I: stopped host $(basename $dev) >&2 - uwb_rc=$(readlink -f $dev/uwb_rc) - echo -1 | cat > $uwb_rc/beacon - echo I: stopped beaconing on $(basename $uwb_rc) >&2 done ;; set-chid) diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c index 64be4d88df1..2a4d36fa70b 100644 --- a/drivers/usb/host/hwa-hc.c +++ b/drivers/usb/host/hwa-hc.c @@ -54,7 +54,6 @@ * DWA). */ #include <linux/kernel.h> -#include <linux/version.h> #include <linux/init.h> #include <linux/module.h> #include <linux/workqueue.h> @@ -171,11 +170,6 @@ static int hwahc_op_start(struct usb_hcd *usb_hcd) if (result < 0) goto error_set_cluster_id; - result = wa_nep_arm(&hwahc->wa, GFP_KERNEL); - if (result < 0) { - dev_err(dev, "cannot listen to notifications: %d\n", result); - goto error_stop; - } usb_hcd->uses_new_polling = 1; usb_hcd->poll_rh = 1; usb_hcd->state = HC_STATE_RUNNING; @@ -185,8 +179,6 @@ out: d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result); return result; -error_stop: - __wa_stop(&hwahc->wa); error_set_cluster_id: wusb_cluster_id_put(wusbhc->cluster_id); error_cluster_id_get: @@ -194,39 +186,6 @@ error_cluster_id_get: } -/* - * FIXME: break this function up - */ -static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc) -{ - int result; - struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); - struct device *dev = &hwahc->wa.usb_iface->dev; - - /* Set up a Host Info WUSB Information Element */ - d_fnstart(4, dev, "(hwahc %p)\n", hwahc); - result = -ENOSPC; - - result = __wa_set_feature(&hwahc->wa, WA_ENABLE); - if (result < 0) { - dev_err(dev, "error commanding HC to start: %d\n", result); - goto error_stop; - } - result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE); - if (result < 0) { - dev_err(dev, "error waiting for HC to start: %d\n", result); - goto error_stop; - } - result = 0; -out: - d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result); - return result; - -error_stop: - result = __wa_clear_feature(&hwahc->wa, WA_ENABLE); - goto out; -} - static int hwahc_op_suspend(struct usb_hcd *usb_hcd, pm_message_t msg) { struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd); @@ -246,18 +205,6 @@ static int hwahc_op_resume(struct usb_hcd *usb_hcd) return -ENOSYS; } -static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc) -{ - int result; - struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); - struct device *dev = &hwahc->wa.usb_iface->dev; - - d_fnstart(4, dev, "(hwahc %p)\n", hwahc); - /* Nothing for now */ - d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result); - return; -} - /* * No need to abort pipes, as when this is called, all the children * has been disconnected and that has done it [through @@ -274,9 +221,6 @@ static void hwahc_op_stop(struct usb_hcd *usb_hcd) d_fnstart(4, dev, "(hwahc %p)\n", hwahc); mutex_lock(&wusbhc->mutex); - wusbhc_stop(wusbhc); - wa_nep_disarm(&hwahc->wa); - result = __wa_stop(&hwahc->wa); wusb_cluster_id_put(wusbhc->cluster_id); mutex_unlock(&wusbhc->mutex); d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result); @@ -325,6 +269,54 @@ static void hwahc_op_endpoint_disable(struct usb_hcd *usb_hcd, rpipe_ep_disable(&hwahc->wa, ep); } +static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc) +{ + int result; + struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); + struct device *dev = &hwahc->wa.usb_iface->dev; + + result = __wa_set_feature(&hwahc->wa, WA_ENABLE); + if (result < 0) { + dev_err(dev, "error commanding HC to start: %d\n", result); + goto error_stop; + } + result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE); + if (result < 0) { + dev_err(dev, "error waiting for HC to start: %d\n", result); + goto error_stop; + } + result = wa_nep_arm(&hwahc->wa, GFP_KERNEL); + if (result < 0) { + dev_err(dev, "cannot listen to notifications: %d\n", result); + goto error_stop; + } + return result; + +error_stop: + __wa_clear_feature(&hwahc->wa, WA_ENABLE); + return result; +} + +static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc, int delay) +{ + struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc); + struct wahc *wa = &hwahc->wa; + u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber; + int ret; + + ret = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0), + WUSB_REQ_CHAN_STOP, + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, + delay * 1000, + iface_no, + NULL, 0, 1000 /* FIXME: arbitrary */); + if (ret == 0) + msleep(delay); + + wa_nep_disarm(&hwahc->wa); + __wa_stop(&hwahc->wa); +} + /* * Set the UWB MAS allocation for the WUSB cluster * diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c index ef3ad4dca94..f599f89d3be 100644 --- a/drivers/usb/host/whci/hcd.c +++ b/drivers/usb/host/whci/hcd.c @@ -15,7 +15,6 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#include <linux/version.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/uwb/umc.h> @@ -92,8 +91,6 @@ static void whc_stop(struct usb_hcd *usb_hcd) mutex_lock(&wusbhc->mutex); - wusbhc_stop(wusbhc); - /* stop HC */ le_writel(0, whc->base + WUSBINTR); whc_write_wusbcmd(whc, WUSBCMD_RUN, 0); diff --git a/drivers/usb/host/whci/hw.c b/drivers/usb/host/whci/hw.c index ac86e59c122..d498e720321 100644 --- a/drivers/usb/host/whci/hw.c +++ b/drivers/usb/host/whci/hw.c @@ -50,6 +50,7 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len) unsigned long flags; dma_addr_t dma_addr; int t; + int ret = 0; mutex_lock(&whc->mutex); @@ -61,7 +62,8 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len) dev_err(&whc->umc->dev, "generic command timeout (%04x/%04x)\n", le_readl(whc->base + WUSBGENCMDSTS), le_readl(whc->base + WUSBGENCMDPARAMS)); - return -ETIMEDOUT; + ret = -ETIMEDOUT; + goto out; } if (addr) { @@ -80,8 +82,8 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len) whc->base + WUSBGENCMDSTS); spin_unlock_irqrestore(&whc->lock, flags); - +out: mutex_unlock(&whc->mutex); - return 0; + return ret; } diff --git a/drivers/usb/host/whci/int.c b/drivers/usb/host/whci/int.c index fce01174aa9..6aae7002810 100644 --- a/drivers/usb/host/whci/int.c +++ b/drivers/usb/host/whci/int.c @@ -15,7 +15,6 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#include <linux/version.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/uwb/umc.h> diff --git a/drivers/usb/host/whci/whcd.h b/drivers/usb/host/whci/whcd.h index 1d2a53bd39f..1bbb8cb6bf8 100644 --- a/drivers/usb/host/whci/whcd.h +++ b/drivers/usb/host/whci/whcd.h @@ -136,7 +136,7 @@ int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len); /* wusb.c */ int whc_wusbhc_start(struct wusbhc *wusbhc); -void whc_wusbhc_stop(struct wusbhc *wusbhc); +void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay); int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt, u8 handle, struct wuie_hdr *wuie); int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle); diff --git a/drivers/usb/host/whci/whci-hc.h b/drivers/usb/host/whci/whci-hc.h index bff1eb7a35c..51df7e313b3 100644 --- a/drivers/usb/host/whci/whci-hc.h +++ b/drivers/usb/host/whci/whci-hc.h @@ -410,6 +410,8 @@ struct dn_buf_entry { # define WUSBDNTSCTRL_SLOTS(s) ((s) << 0) #define WUSBTIME 0x68 +# define WUSBTIME_CHANNEL_TIME_MASK 0x00ffffff + #define WUSBBPST 0x6c #define WUSBDIBUPDATED 0x70 diff --git a/drivers/usb/host/whci/wusb.c b/drivers/usb/host/whci/wusb.c index 66e4ddcd961..540021a0971 100644 --- a/drivers/usb/host/whci/wusb.c +++ b/drivers/usb/host/whci/wusb.c @@ -15,7 +15,6 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#include <linux/version.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/uwb/umc.h> @@ -64,8 +63,9 @@ static int whc_update_di(struct whc *whc, int idx) } /* - * WHCI starts and stops MMCs based on there being a valid GTK so - * these need only start/stop the asynchronous and periodic schedules. + * WHCI starts MMCs based on there being a valid GTK so these need + * only start/stop the asynchronous and periodic schedules and send a + * channel stop command. */ int whc_wusbhc_start(struct wusbhc *wusbhc) @@ -78,12 +78,20 @@ int whc_wusbhc_start(struct wusbhc *wusbhc) return 0; } -void whc_wusbhc_stop(struct wusbhc *wusbhc) +void whc_wusbhc_stop(struct wusbhc *wusbhc, int delay) { struct whc *whc = wusbhc_to_whc(wusbhc); + u32 stop_time, now_time; + int ret; pzl_stop(whc); asl_stop(whc); + + now_time = le_readl(whc->base + WUSBTIME) & WUSBTIME_CHANNEL_TIME_MASK; + stop_time = (now_time + ((delay * 8) << 7)) & 0x00ffffff; + ret = whc_do_gencmd(whc, WUSBGENCMDSTS_CHAN_STOP, stop_time, NULL, 0); + if (ret == 0) + msleep(delay); } int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt, diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c index ab4788d1785..1335cbe1191 100644 --- a/drivers/usb/wusbcore/cbaf.c +++ b/drivers/usb/wusbcore/cbaf.c @@ -88,7 +88,6 @@ */ #include <linux/module.h> #include <linux/ctype.h> -#include <linux/version.h> #include <linux/usb.h> #include <linux/interrupt.h> #include <linux/delay.h> diff --git a/drivers/usb/wusbcore/crypto.c b/drivers/usb/wusbcore/crypto.c index c36c4389baa..0ca860305fe 100644 --- a/drivers/usb/wusbcore/crypto.c +++ b/drivers/usb/wusbcore/crypto.c @@ -54,6 +54,10 @@ #define D_LOCAL 0 #include <linux/uwb/debug.h> +static int debug_crypto_verify = 0; + +module_param(debug_crypto_verify, int, 0); +MODULE_PARM_DESC(debug_crypto_verify, "verify the key generation algorithms"); /* * Block of data, as understood by AES-CCM @@ -526,10 +530,13 @@ int wusb_crypto_init(void) { int result; - result = wusb_key_derive_verify(); - if (result < 0) - return result; - return wusb_oob_mic_verify(); + if (debug_crypto_verify) { + result = wusb_key_derive_verify(); + if (result < 0) + return result; + return wusb_oob_mic_verify(); + } + return 0; } void wusb_crypto_exit(void) diff --git a/drivers/usb/wusbcore/devconnect.c b/drivers/usb/wusbcore/devconnect.c index f45d777bef3..08a1ec90386 100644 --- a/drivers/usb/wusbcore/devconnect.c +++ b/drivers/usb/wusbcore/devconnect.c @@ -57,9 +57,6 @@ * Called by notif.c:wusb_handle_dn_connect() * when a DN_Connect is received. * - * wusbhc_devconnect_auth() Called by rh.c:wusbhc_rh_port_reset() when - * doing the device connect sequence. - * * wusb_devconnect_acked() Ack done, release resources. * * wusb_handle_dn_alive() Called by notif.c:wusb_handle_dn() @@ -69,9 +66,6 @@ * process a disconenct request from a * device. * - * wusb_dev_reset() Called by rh.c:wusbhc_rh_port_reset() when - * resetting a device. - * * __wusb_dev_disable() Called by rh.c:wusbhc_rh_clear_port_feat() when * disabling a port. * @@ -366,12 +360,10 @@ void wusbhc_devconnect_ack(struct wusbhc *wusbhc, struct wusb_dn_connect *dnc, port->wusb_dev = wusb_dev; port->status |= USB_PORT_STAT_CONNECTION; port->change |= USB_PORT_STAT_C_CONNECTION; - port->reset_count = 0; /* Now the port status changed to connected; khubd will * pick the change up and try to reset the port to bring it to * the enabled state--so this process returns up to the stack - * and it calls back into wusbhc_rh_port_reset() who will call - * devconnect_auth(). + * and it calls back into wusbhc_rh_port_reset(). */ error_unlock: mutex_unlock(&wusbhc->mutex); @@ -413,9 +405,6 @@ static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc, wusb_dev_put(wusb_dev); } port->wusb_dev = NULL; - /* don't reset the reset_count to zero or wusbhc_rh_port_reset will get - * confused! We only reset to zero when we connect a new device. - */ /* After a device disconnects, change the GTK (see [WUSB] * section 6.2.11.2). */ @@ -429,39 +418,6 @@ static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc, } /* - * Authenticate a device into the WUSB Cluster - * - * Called from the Root Hub code (rh.c:wusbhc_rh_port_reset()) when - * asking for a reset on a port that is not enabled (ie: first connect - * on the port). - * - * Performs the 4way handshake to allow the device to comunicate w/ the - * WUSB Cluster securely; once done, issue a request to the device for - * it to change to address 0. - * - * This mimics the reset step of Wired USB that once resetting a - * device, leaves the port in enabled state and the dev with the - * default address (0). - * - * WUSB1.0[7.1.2] - * - * @port_idx: port where the change happened--This is the index into - * the wusbhc port array, not the USB port number. - */ -int wusbhc_devconnect_auth(struct wusbhc *wusbhc, u8 port_idx) -{ - struct device *dev = wusbhc->dev; - struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx); - - d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx); - port->status &= ~USB_PORT_STAT_RESET; - port->status |= USB_PORT_STAT_ENABLE; - port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE; - d_fnend(3, dev, "(%p, %u) = 0\n", wusbhc, port_idx); - return 0; -} - -/* * Refresh the list of keep alives to emit in the MMC * * Some devices don't respond to keep alives unless they've been @@ -662,60 +618,6 @@ static void wusbhc_handle_dn_disconnect(struct wusbhc *wusbhc, struct wusb_dev * } /* - * Reset a WUSB device on a HWA - * - * @wusbhc - * @port_idx Index of the port where the device is - * - * In Wireless USB, a reset is more or less equivalent to a full - * disconnect; so we just do a full disconnect and send the device a - * Device Reset IE (WUSB1.0[7.5.11]) giving it a few millisecs (6 MMCs). - * - * @wusbhc should be refcounted and unlocked - */ -int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port_idx) -{ - int result; - struct device *dev = wusbhc->dev; - struct wusb_dev *wusb_dev; - struct wuie_reset *ie; - - d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx); - mutex_lock(&wusbhc->mutex); - result = 0; - wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev; - if (wusb_dev == NULL) { - /* reset no device? ignore */ - dev_dbg(dev, "RESET: no device at port %u, ignoring\n", - port_idx); - goto error_unlock; - } - result = -ENOMEM; - ie = kzalloc(sizeof(*ie), GFP_KERNEL); - if (ie == NULL) - goto error_unlock; - ie->hdr.bLength = sizeof(ie->hdr) + sizeof(ie->CDID); - ie->hdr.bIEIdentifier = WUIE_ID_RESET_DEVICE; - ie->CDID = wusb_dev->cdid; - result = wusbhc_mmcie_set(wusbhc, 0xff, 6, &ie->hdr); - if (result < 0) { - dev_err(dev, "RESET: cant's set MMC: %d\n", result); - goto error_kfree; - } - __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx)); - - /* 120ms, hopefully 6 MMCs (FIXME) */ - msleep(120); - wusbhc_mmcie_rm(wusbhc, &ie->hdr); -error_kfree: - kfree(ie); -error_unlock: - mutex_unlock(&wusbhc->mutex); - d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result); - return result; -} - -/* * Handle a Device Notification coming a host * * The Device Notification comes from a host (HWA, DWA or WHCI) @@ -1222,8 +1124,7 @@ void wusbhc_devconnect_destroy(struct wusbhc *wusbhc) * FIXME: This also enables the keep alives but this is not necessary * until there are connected and authenticated devices. */ -int wusbhc_devconnect_start(struct wusbhc *wusbhc, - const struct wusb_ckhdid *chid) +int wusbhc_devconnect_start(struct wusbhc *wusbhc) { struct device *dev = wusbhc->dev; struct wuie_host_info *hi; @@ -1236,7 +1137,7 @@ int wusbhc_devconnect_start(struct wusbhc *wusbhc, hi->hdr.bLength = sizeof(*hi); hi->hdr.bIEIdentifier = WUIE_ID_HOST_INFO; hi->attributes = cpu_to_le16((wusbhc->rsv->stream << 3) | WUIE_HI_CAP_ALL); - hi->CHID = *chid; + hi->CHID = wusbhc->chid; result = wusbhc_mmcie_set(wusbhc, 0, 0, &hi->hdr); if (result < 0) { dev_err(dev, "Cannot add Host Info MMCIE: %d\n", result); diff --git a/drivers/usb/wusbcore/mmc.c b/drivers/usb/wusbcore/mmc.c index cfa77a01ceb..5463ecebafd 100644 --- a/drivers/usb/wusbcore/mmc.c +++ b/drivers/usb/wusbcore/mmc.c @@ -162,12 +162,11 @@ EXPORT_SYMBOL_GPL(wusbhc_mmcie_rm); /* * wusbhc_start - start transmitting MMCs and accepting connections * @wusbhc: the HC to start - * @chid: the CHID to use for this host * * Establishes a cluster reservation, enables device connections, and * starts MMCs with appropriate DNTS parameters. */ -int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid) +int wusbhc_start(struct wusbhc *wusbhc) { int result; struct device *dev = wusbhc->dev; @@ -181,7 +180,7 @@ int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid) goto error_rsv_establish; } - result = wusbhc_devconnect_start(wusbhc, chid); + result = wusbhc_devconnect_start(wusbhc); if (result < 0) { dev_err(dev, "error enabling device connections: %d\n", result); goto error_devconnect_start; @@ -219,49 +218,17 @@ error_rsv_establish: } /* - * Disconnect all from the WUSB Channel - * - * Send a Host Disconnect IE in the MMC, wait, don't send it any more - */ -static int __wusbhc_host_disconnect_ie(struct wusbhc *wusbhc) -{ - int result = -ENOMEM; - struct wuie_host_disconnect *host_disconnect_ie; - might_sleep(); - host_disconnect_ie = kmalloc(sizeof(*host_disconnect_ie), GFP_KERNEL); - if (host_disconnect_ie == NULL) - goto error_alloc; - host_disconnect_ie->hdr.bLength = sizeof(*host_disconnect_ie); - host_disconnect_ie->hdr.bIEIdentifier = WUIE_ID_HOST_DISCONNECT; - result = wusbhc_mmcie_set(wusbhc, 0, 0, &host_disconnect_ie->hdr); - if (result < 0) - goto error_mmcie_set; - - /* WUSB1.0[8.5.3.1 & 7.5.2] */ - msleep(100); - wusbhc_mmcie_rm(wusbhc, &host_disconnect_ie->hdr); -error_mmcie_set: - kfree(host_disconnect_ie); -error_alloc: - return result; -} - -/* * wusbhc_stop - stop transmitting MMCs * @wusbhc: the HC to stop * - * Send a Host Disconnect IE, wait, remove all the MMCs (stop sending MMCs). - * - * If we can't allocate a Host Stop IE, screw it, we don't notify the - * devices we are disconnecting... + * Stops the WUSB channel and removes the cluster reservation. */ void wusbhc_stop(struct wusbhc *wusbhc) { if (wusbhc->active) { wusbhc->active = 0; - wusbhc->stop(wusbhc); + wusbhc->stop(wusbhc, WUSB_CHANNEL_STOP_DELAY_MS); wusbhc_sec_stop(wusbhc); - __wusbhc_host_disconnect_ie(wusbhc); wusbhc_devconnect_stop(wusbhc); wusbhc_rsv_terminate(wusbhc); } @@ -269,29 +236,6 @@ void wusbhc_stop(struct wusbhc *wusbhc) EXPORT_SYMBOL_GPL(wusbhc_stop); /* - * Change the CHID in a WUSB Channel - * - * If it is just a new CHID, send a Host Disconnect IE and then change - * the CHID IE. - */ -static int __wusbhc_chid_change(struct wusbhc *wusbhc, - const struct wusb_ckhdid *chid) -{ - int result = -ENOSYS; - struct device *dev = wusbhc->dev; - dev_err(dev, "%s() not implemented yet\n", __func__); - return result; - - BUG_ON(wusbhc->wuie_host_info == NULL); - __wusbhc_host_disconnect_ie(wusbhc); - wusbhc->wuie_host_info->CHID = *chid; - result = wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->wuie_host_info->hdr); - if (result < 0) - dev_err(dev, "Can't update Host Info WUSB IE: %d\n", result); - return result; -} - -/* * Set/reset/update a new CHID * * Depending on the previous state of the MMCs, start, stop or change @@ -306,16 +250,19 @@ int wusbhc_chid_set(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid) chid = NULL; mutex_lock(&wusbhc->mutex); - if (wusbhc->active) { - if (chid) - result = __wusbhc_chid_change(wusbhc, chid); - else - wusbhc_stop(wusbhc); - } else { - if (chid) - wusbhc_start(wusbhc, chid); + if (chid) { + if (wusbhc->active) { + mutex_unlock(&wusbhc->mutex); + return -EBUSY; + } + wusbhc->chid = *chid; } mutex_unlock(&wusbhc->mutex); + + if (chid) + result = uwb_radio_start(&wusbhc->pal); + else + uwb_radio_stop(&wusbhc->pal); return result; } EXPORT_SYMBOL_GPL(wusbhc_chid_set); diff --git a/drivers/usb/wusbcore/pal.c b/drivers/usb/wusbcore/pal.c index 7cc51e9905c..d0b172c5ecc 100644 --- a/drivers/usb/wusbcore/pal.c +++ b/drivers/usb/wusbcore/pal.c @@ -18,6 +18,16 @@ */ #include "wusbhc.h" +static void wusbhc_channel_changed(struct uwb_pal *pal, int channel) +{ + struct wusbhc *wusbhc = container_of(pal, struct wusbhc, pal); + + if (channel < 0) + wusbhc_stop(wusbhc); + else + wusbhc_start(wusbhc); +} + /** * wusbhc_pal_register - register the WUSB HC as a UWB PAL * @wusbhc: the WUSB HC @@ -28,8 +38,10 @@ int wusbhc_pal_register(struct wusbhc *wusbhc) wusbhc->pal.name = "wusbhc"; wusbhc->pal.device = wusbhc->usb_hcd.self.controller; + wusbhc->pal.rc = wusbhc->uwb_rc; + wusbhc->pal.channel_changed = wusbhc_channel_changed; - return uwb_pal_register(wusbhc->uwb_rc, &wusbhc->pal); + return uwb_pal_register(&wusbhc->pal); } /** @@ -38,5 +50,5 @@ int wusbhc_pal_register(struct wusbhc *wusbhc) */ void wusbhc_pal_unregister(struct wusbhc *wusbhc) { - uwb_pal_unregister(wusbhc->uwb_rc, &wusbhc->pal); + uwb_pal_unregister(&wusbhc->pal); } diff --git a/drivers/usb/wusbcore/reservation.c b/drivers/usb/wusbcore/reservation.c index fc63e77ded2..7b6525dac2f 100644 --- a/drivers/usb/wusbcore/reservation.c +++ b/drivers/usb/wusbcore/reservation.c @@ -59,7 +59,6 @@ static void wusbhc_rsv_complete_cb(struct uwb_rsv *rsv) case UWB_RSV_STATE_NONE: dev_dbg(dev, "removed reservation\n"); wusbhc_bwa_set(wusbhc, 0, NULL); - wusbhc->rsv = NULL; break; default: dev_dbg(dev, "unexpected reservation state: %d\n", rsv->state); @@ -105,11 +104,11 @@ int wusbhc_rsv_establish(struct wusbhc *wusbhc) /** - * wusbhc_rsv_terminate - terminate any cluster reservation + * wusbhc_rsv_terminate - terminate the cluster reservation * @wusbhc: the WUSB host whose reservation is to be terminated */ void wusbhc_rsv_terminate(struct wusbhc *wusbhc) { - if (wusbhc->rsv) - uwb_rsv_terminate(wusbhc->rsv); + uwb_rsv_terminate(wusbhc->rsv); + uwb_rsv_destroy(wusbhc->rsv); } diff --git a/drivers/usb/wusbcore/rh.c b/drivers/usb/wusbcore/rh.c index 267a6432510..1c733192ec2 100644 --- a/drivers/usb/wusbcore/rh.c +++ b/drivers/usb/wusbcore/rh.c @@ -77,13 +77,17 @@ /* * Reset a fake port * - * This can be called to reset a port from any other state or to reset - * it when connecting. In Wireless USB they are different; when doing - * a new connect that involves going over the authentication. When - * just reseting, its a different story. + * Using a Reset Device IE is too heavyweight as it causes the device + * to enter the UnConnected state and leave the cluster, this can mean + * that when the device reconnects it is connected to a different fake + * port. * - * The Linux USB stack resets a port twice before it considers it - * enabled, so we have to detect and ignore that. + * Instead, reset authenticated devices with a SetAddress(0), followed + * by a SetAddresss(AuthAddr). + * + * For unauthenticated devices just pretend to reset but do nothing. + * If the device initialization continues to fail it will eventually + * time out after TrustTimeout and enter the UnConnected state. * * @wusbhc is assumed referenced and @wusbhc->mutex unlocked. * @@ -97,20 +101,20 @@ static int wusbhc_rh_port_reset(struct wusbhc *wusbhc, u8 port_idx) { int result = 0; struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx); + struct wusb_dev *wusb_dev = port->wusb_dev; + + port->status |= USB_PORT_STAT_RESET; + port->change |= USB_PORT_STAT_C_RESET; - d_fnstart(3, wusbhc->dev, "(wusbhc %p port_idx %u)\n", - wusbhc, port_idx); - if (port->reset_count == 0) { - wusbhc_devconnect_auth(wusbhc, port_idx); - port->reset_count++; - } else if (port->reset_count == 1) - /* see header */ - d_printf(2, wusbhc->dev, "Ignoring second reset on port_idx " - "%u\n", port_idx); + if (wusb_dev->addr & WUSB_DEV_ADDR_UNAUTH) + result = 0; else - result = wusbhc_dev_reset(wusbhc, port_idx); - d_fnend(3, wusbhc->dev, "(wusbhc %p port_idx %u) = %d\n", - wusbhc, port_idx, result); + result = wusb_dev_update_address(wusbhc, wusb_dev); + + port->status &= ~USB_PORT_STAT_RESET; + port->status |= USB_PORT_STAT_ENABLE; + port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE; + return result; } diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c index a101cad6a8d..ac00640bba6 100644 --- a/drivers/usb/wusbcore/security.c +++ b/drivers/usb/wusbcore/security.c @@ -338,8 +338,7 @@ static void hs_printk(unsigned level, struct device *dev, * Before the device's address (as known by it) was usb_dev->devnum | * 0x80 (unauthenticated address). With this we update it to usb_dev->devnum. */ -static int wusb_dev_update_address(struct wusbhc *wusbhc, - struct wusb_dev *wusb_dev) +int wusb_dev_update_address(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev) { int result = -ENOMEM; struct usb_device *usb_dev = wusb_dev->usb_dev; diff --git a/drivers/usb/wusbcore/wusbhc.h b/drivers/usb/wusbcore/wusbhc.h index d0c132434f1..797c2453a35 100644 --- a/drivers/usb/wusbcore/wusbhc.h +++ b/drivers/usb/wusbcore/wusbhc.h @@ -64,6 +64,13 @@ #include <linux/uwb.h> #include <linux/usb/wusb.h> +/* + * Time from a WUSB channel stop request to the last transmitted MMC. + * + * This needs to be > 4.096 ms in case no MMCs can be transmitted in + * zone 0. + */ +#define WUSB_CHANNEL_STOP_DELAY_MS 8 /** * Wireless USB device @@ -147,7 +154,6 @@ struct wusb_port { u16 status; u16 change; struct wusb_dev *wusb_dev; /* connected device's info */ - unsigned reset_count; u32 ptk_tkid; }; @@ -198,21 +204,18 @@ struct wusb_port { * @mmcies_max Max number of Information Elements this HC can send * in its MMC. Read-only. * + * @start Start the WUSB channel. + * + * @stop Stop the WUSB channel after the specified number of + * milliseconds. Channel Stop IEs should be transmitted + * as required by [WUSB] 4.16.2.1. + * * @mmcie_add HC specific operation (WHCI or HWA) for adding an * MMCIE. * * @mmcie_rm HC specific operation (WHCI or HWA) for removing an * MMCIE. * - * @enc_types Array which describes the encryptions methods - * supported by the host as described in WUSB1.0 -- - * one entry per supported method. As of WUSB1.0 there - * is only four methods, we make space for eight just in - * case they decide to add some more (and pray they do - * it in sequential order). if 'enc_types[enc_method] - * != 0', then it is supported by the host. enc_method - * is USB_ENC_TYPE*. - * * @set_ptk: Set the PTK and enable encryption for a device. Or, if * the supplied key is NULL, disable encryption for that * device. @@ -249,7 +252,8 @@ struct wusbhc { struct uwb_pal pal; unsigned trust_timeout; /* in jiffies */ - struct wuie_host_info *wuie_host_info; /* Includes CHID */ + struct wusb_ckhdid chid; + struct wuie_host_info *wuie_host_info; struct mutex mutex; /* locks everything else */ u16 cluster_id; /* Wireless USB Cluster ID */ @@ -269,7 +273,7 @@ struct wusbhc { u8 mmcies_max; /* FIXME: make wusbhc_ops? */ int (*start)(struct wusbhc *wusbhc); - void (*stop)(struct wusbhc *wusbhc); + void (*stop)(struct wusbhc *wusbhc, int delay); int (*mmcie_add)(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt, u8 handle, struct wuie_hdr *wuie); int (*mmcie_rm)(struct wusbhc *wusbhc, u8 handle); @@ -373,20 +377,17 @@ static inline void wusbhc_put(struct wusbhc *wusbhc) usb_put_hcd(&wusbhc->usb_hcd); } -int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid); +int wusbhc_start(struct wusbhc *wusbhc); void wusbhc_stop(struct wusbhc *wusbhc); extern int wusbhc_chid_set(struct wusbhc *, const struct wusb_ckhdid *); /* Device connect handling */ extern int wusbhc_devconnect_create(struct wusbhc *); extern void wusbhc_devconnect_destroy(struct wusbhc *); -extern int wusbhc_devconnect_start(struct wusbhc *wusbhc, - const struct wusb_ckhdid *chid); +extern int wusbhc_devconnect_start(struct wusbhc *wusbhc); extern void wusbhc_devconnect_stop(struct wusbhc *wusbhc); -extern int wusbhc_devconnect_auth(struct wusbhc *, u8); extern void wusbhc_handle_dn(struct wusbhc *, u8 srcaddr, struct wusb_dn_hdr *dn_hdr, size_t size); -extern int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port); extern void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port); extern int wusb_usb_ncb(struct notifier_block *nb, unsigned long val, void *priv); @@ -432,6 +433,7 @@ extern void wusb_dev_sec_rm(struct wusb_dev *) ; extern int wusb_dev_4way_handshake(struct wusbhc *, struct wusb_dev *, struct wusb_ckhdid *ck); void wusbhc_gtk_rekey(struct wusbhc *wusbhc); +int wusb_dev_update_address(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev); /* WUSB Cluster ID handling */ diff --git a/drivers/uwb/Makefile b/drivers/uwb/Makefile index 257e6908304..ce21a95da04 100644 --- a/drivers/uwb/Makefile +++ b/drivers/uwb/Makefile @@ -13,10 +13,12 @@ uwb-objs := \ drp-ie.o \ est.o \ ie.o \ + ie-rcv.o \ lc-dev.o \ lc-rc.o \ neh.o \ pal.o \ + radio.o \ reset.o \ rsv.o \ scan.o \ diff --git a/drivers/uwb/beacon.c b/drivers/uwb/beacon.c index 46b18eec502..d9c60cb9499 100644 --- a/drivers/uwb/beacon.c +++ b/drivers/uwb/beacon.c @@ -119,7 +119,6 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset) int result; struct device *dev = &rc->uwb_dev.dev; - mutex_lock(&rc->uwb_dev.mutex); if (channel < 0) channel = -1; if (channel == -1) @@ -128,7 +127,7 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset) /* channel >= 0...dah */ result = uwb_rc_start_beacon(rc, bpst_offset, channel); if (result < 0) - goto out_up; + return result; if (le16_to_cpu(rc->ies->wIELength) > 0) { result = uwb_rc_set_ie(rc, rc->ies); if (result < 0) { @@ -137,19 +136,12 @@ int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset) result = uwb_rc_stop_beacon(rc); channel = -1; bpst_offset = 0; - } else - result = 0; + } } } - if (result < 0) - goto out_up; - rc->beaconing = channel; - - uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE); - -out_up: - mutex_unlock(&rc->uwb_dev.mutex); + if (result >= 0) + rc->beaconing = channel; return result; } @@ -168,12 +160,6 @@ out_up: * FIXME: use something faster for search than a list */ -struct uwb_beca uwb_beca = { - .list = LIST_HEAD_INIT(uwb_beca.list), - .mutex = __MUTEX_INITIALIZER(uwb_beca.mutex) -}; - - void uwb_bce_kfree(struct kref *_bce) { struct uwb_beca_e *bce = container_of(_bce, struct uwb_beca_e, refcnt); @@ -185,10 +171,11 @@ void uwb_bce_kfree(struct kref *_bce) /* Find a beacon by dev addr in the cache */ static -struct uwb_beca_e *__uwb_beca_find_bydev(const struct uwb_dev_addr *dev_addr) +struct uwb_beca_e *__uwb_beca_find_bydev(struct uwb_rc *rc, + const struct uwb_dev_addr *dev_addr) { struct uwb_beca_e *bce, *next; - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { d_printf(6, NULL, "looking for addr %02x:%02x in %02x:%02x\n", dev_addr->data[0], dev_addr->data[1], bce->dev_addr.data[0], bce->dev_addr.data[1]); @@ -202,10 +189,11 @@ out: /* Find a beacon by dev addr in the cache */ static -struct uwb_beca_e *__uwb_beca_find_bymac(const struct uwb_mac_addr *mac_addr) +struct uwb_beca_e *__uwb_beca_find_bymac(struct uwb_rc *rc, + const struct uwb_mac_addr *mac_addr) { struct uwb_beca_e *bce, *next; - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { if (!memcmp(bce->mac_addr, mac_addr->data, sizeof(struct uwb_mac_addr))) goto out; @@ -229,11 +217,11 @@ struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc, struct uwb_dev *found = NULL; struct uwb_beca_e *bce; - mutex_lock(&uwb_beca.mutex); - bce = __uwb_beca_find_bydev(devaddr); + mutex_lock(&rc->uwb_beca.mutex); + bce = __uwb_beca_find_bydev(rc, devaddr); if (bce) found = uwb_dev_try_get(rc, bce->uwb_dev); - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); return found; } @@ -249,11 +237,11 @@ struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc, struct uwb_dev *found = NULL; struct uwb_beca_e *bce; - mutex_lock(&uwb_beca.mutex); - bce = __uwb_beca_find_bymac(macaddr); + mutex_lock(&rc->uwb_beca.mutex); + bce = __uwb_beca_find_bymac(rc, macaddr); if (bce) found = uwb_dev_try_get(rc, bce->uwb_dev); - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); return found; } @@ -274,7 +262,9 @@ static void uwb_beca_e_init(struct uwb_beca_e *bce) * @bf: Beacon frame (part of b, really) * @ts_jiffies: Timestamp (in jiffies) when the beacon was received */ -struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be, +static +struct uwb_beca_e *__uwb_beca_add(struct uwb_rc *rc, + struct uwb_rc_evt_beacon *be, struct uwb_beacon_frame *bf, unsigned long ts_jiffies) { @@ -286,7 +276,7 @@ struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be, uwb_beca_e_init(bce); bce->ts_jiffies = ts_jiffies; bce->uwb_dev = NULL; - list_add(&bce->node, &uwb_beca.list); + list_add(&bce->node, &rc->uwb_beca.list); return bce; } @@ -295,13 +285,13 @@ struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be, * * Remove associated devicest too. */ -void uwb_beca_purge(void) +void uwb_beca_purge(struct uwb_rc *rc) { struct uwb_beca_e *bce, *next; unsigned long expires; - mutex_lock(&uwb_beca.mutex); - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + mutex_lock(&rc->uwb_beca.mutex); + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms); if (time_after(jiffies, expires)) { uwbd_dev_offair(bce); @@ -309,19 +299,20 @@ void uwb_beca_purge(void) uwb_bce_put(bce); } } - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); } /* Clean up the whole beacon cache. Called on shutdown */ -void uwb_beca_release(void) +void uwb_beca_release(struct uwb_rc *rc) { struct uwb_beca_e *bce, *next; - mutex_lock(&uwb_beca.mutex); - list_for_each_entry_safe(bce, next, &uwb_beca.list, node) { + + mutex_lock(&rc->uwb_beca.mutex); + list_for_each_entry_safe(bce, next, &rc->uwb_beca.list, node) { list_del(&bce->node); uwb_bce_put(bce); } - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); } static void uwb_beacon_print(struct uwb_rc *rc, struct uwb_rc_evt_beacon *be, @@ -349,22 +340,22 @@ ssize_t uwb_bce_print_IEs(struct uwb_dev *uwb_dev, struct uwb_beca_e *bce, ssize_t result = 0; struct uwb_rc_evt_beacon *be; struct uwb_beacon_frame *bf; - struct uwb_buf_ctx ctx = { - .buf = buf, - .bytes = 0, - .size = size - }; + int ies_len; + struct uwb_ie_hdr *ies; mutex_lock(&bce->mutex); + be = bce->be; - if (be == NULL) - goto out; - bf = (void *) be->BeaconInfo; - uwb_ie_for_each(uwb_dev, uwb_ie_dump_hex, &ctx, - bf->IEData, be->wBeaconInfoLength - sizeof(*bf)); - result = ctx.bytes; -out: + if (be) { + bf = (struct uwb_beacon_frame *)bce->be->BeaconInfo; + ies_len = be->wBeaconInfoLength - sizeof(struct uwb_beacon_frame); + ies = (struct uwb_ie_hdr *)bf->IEData; + + result = uwb_ie_dump_hex(ies, ies_len, buf, size); + } + mutex_unlock(&bce->mutex); + return result; } @@ -437,18 +428,18 @@ int uwbd_evt_handle_rc_beacon(struct uwb_event *evt) if (uwb_mac_addr_bcast(&bf->Device_Identifier)) return 0; - mutex_lock(&uwb_beca.mutex); - bce = __uwb_beca_find_bymac(&bf->Device_Identifier); + mutex_lock(&rc->uwb_beca.mutex); + bce = __uwb_beca_find_bymac(rc, &bf->Device_Identifier); if (bce == NULL) { /* Not in there, a new device is pinging */ uwb_beacon_print(evt->rc, be, bf); - bce = __uwb_beca_add(be, bf, evt->ts_jiffies); + bce = __uwb_beca_add(rc, be, bf, evt->ts_jiffies); if (bce == NULL) { - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); return -ENOMEM; } } - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); mutex_lock(&bce->mutex); /* purge old beacon data */ @@ -588,19 +579,6 @@ error: return result; } -/** - * uwb_bg_joined - is the RC in a beacon group? - * @rc: the radio controller - * - * Returns true if the radio controller is in a beacon group (even if - * it's the sole member). - */ -int uwb_bg_joined(struct uwb_rc *rc) -{ - return rc->beaconing != -1; -} -EXPORT_SYMBOL_GPL(uwb_bg_joined); - /* * Print beaconing state. */ @@ -619,9 +597,6 @@ static ssize_t uwb_rc_beacon_show(struct device *dev, /* * Start beaconing on the specified channel, or stop beaconing. - * - * The BPST offset of when to start searching for a beacon group to - * join may be specified. */ static ssize_t uwb_rc_beacon_store(struct device *dev, struct device_attribute *attr, @@ -630,12 +605,11 @@ static ssize_t uwb_rc_beacon_store(struct device *dev, struct uwb_dev *uwb_dev = to_uwb_dev(dev); struct uwb_rc *rc = uwb_dev->rc; int channel; - unsigned bpst_offset = 0; ssize_t result = -EINVAL; - result = sscanf(buf, "%d %u\n", &channel, &bpst_offset); + result = sscanf(buf, "%d", &channel); if (result >= 1) - result = uwb_rc_beacon(rc, channel, bpst_offset); + result = uwb_radio_force_channel(rc, channel); return result < 0 ? result : size; } diff --git a/drivers/uwb/driver.c b/drivers/uwb/driver.c index 521cdeb8497..f57c26580de 100644 --- a/drivers/uwb/driver.c +++ b/drivers/uwb/driver.c @@ -118,7 +118,6 @@ static int __init uwb_subsys_init(void) result = class_register(&uwb_rc_class); if (result < 0) goto error_uwb_rc_class_register; - uwbd_start(); uwb_dbg_init(); return 0; @@ -132,7 +131,6 @@ module_init(uwb_subsys_init); static void __exit uwb_subsys_exit(void) { uwb_dbg_exit(); - uwbd_stop(); class_unregister(&uwb_rc_class); uwb_est_destroy(); return; diff --git a/drivers/uwb/drp-ie.c b/drivers/uwb/drp-ie.c index 882724c5f12..75491d47806 100644 --- a/drivers/uwb/drp-ie.c +++ b/drivers/uwb/drp-ie.c @@ -16,7 +16,6 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#include <linux/version.h> #include <linux/kernel.h> #include <linux/random.h> #include <linux/uwb.h> diff --git a/drivers/uwb/drp.c b/drivers/uwb/drp.c index c0b1e5e2bd0..fe328146adb 100644 --- a/drivers/uwb/drp.c +++ b/drivers/uwb/drp.c @@ -37,14 +37,13 @@ * * A DRP Availability IE is appended. * - * rc->uwb_dev.mutex is held + * rc->rsvs_mutex is held * * FIXME We currently ignore the returned value indicating the remaining space * in beacon. This could be used to deny reservation requests earlier if * determined that they would cause the beacon space to be exceeded. */ -static -int uwb_rc_gen_send_drp_ie(struct uwb_rc *rc) +int uwb_rc_send_all_drp_ie(struct uwb_rc *rc) { int result; struct device *dev = &rc->uwb_dev.dev; @@ -102,25 +101,6 @@ error_cmd: kfree(cmd); error: return result; - -} -/** - * Send all DRP IEs associated with this host - * - * @returns: >= 0 number of bytes still available in the beacon - * < 0 errno code on error. - * - * As per the protocol we obtain the host controller device lock to access - * bandwidth structures. - */ -int uwb_rc_send_all_drp_ie(struct uwb_rc *rc) -{ - int result; - - mutex_lock(&rc->uwb_dev.mutex); - result = uwb_rc_gen_send_drp_ie(rc); - mutex_unlock(&rc->uwb_dev.mutex); - return result; } void uwb_drp_handle_timeout(struct uwb_rsv *rsv) diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c index 3d26fa0f8ae..158e98d08af 100644 --- a/drivers/uwb/hwa-rc.c +++ b/drivers/uwb/hwa-rc.c @@ -51,7 +51,6 @@ * * */ -#include <linux/version.h> #include <linux/init.h> #include <linux/module.h> #include <linux/usb.h> @@ -882,6 +881,24 @@ static void hwarc_disconnect(struct usb_interface *iface) uwb_rc_put(uwb_rc); /* when creating the device, refcount = 1 */ } +static int hwarc_pre_reset(struct usb_interface *iface) +{ + struct hwarc *hwarc = usb_get_intfdata(iface); + struct uwb_rc *uwb_rc = hwarc->uwb_rc; + + uwb_rc_pre_reset(uwb_rc); + return 0; +} + +static int hwarc_post_reset(struct usb_interface *iface) +{ + struct hwarc *hwarc = usb_get_intfdata(iface); + struct uwb_rc *uwb_rc = hwarc->uwb_rc; + + uwb_rc_post_reset(uwb_rc); + return 0; +} + /** USB device ID's that we handle */ static struct usb_device_id hwarc_id_table[] = { /* D-Link DUB-1210 */ @@ -898,9 +915,11 @@ MODULE_DEVICE_TABLE(usb, hwarc_id_table); static struct usb_driver hwarc_driver = { .name = "hwa-rc", + .id_table = hwarc_id_table, .probe = hwarc_probe, .disconnect = hwarc_disconnect, - .id_table = hwarc_id_table, + .pre_reset = hwarc_pre_reset, + .post_reset = hwarc_post_reset, }; static int __init hwarc_driver_init(void) diff --git a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c index 98eeeff051a..b7ea525fc06 100644 --- a/drivers/uwb/i1480/dfu/usb.c +++ b/drivers/uwb/i1480/dfu/usb.c @@ -35,7 +35,6 @@ * the functions are i1480_usb_NAME(). */ #include <linux/module.h> -#include <linux/version.h> #include <linux/usb.h> #include <linux/interrupt.h> #include <linux/delay.h> diff --git a/drivers/uwb/i1480/i1480u-wlp/lc.c b/drivers/uwb/i1480/i1480u-wlp/lc.c index 737d60cd5b7..488b2e30a0a 100644 --- a/drivers/uwb/i1480/i1480u-wlp/lc.c +++ b/drivers/uwb/i1480/i1480u-wlp/lc.c @@ -55,7 +55,6 @@ * is being removed. * i1480u_rm() */ -#include <linux/version.h> #include <linux/if_arp.h> #include <linux/etherdevice.h> #include <linux/uwb/debug.h> @@ -207,7 +206,7 @@ int i1480u_add(struct i1480u *i1480u, struct usb_interface *iface) wlp->fill_device_info = i1480u_fill_device_info; wlp->stop_queue = i1480u_stop_queue; wlp->start_queue = i1480u_start_queue; - result = wlp_setup(wlp, rc); + result = wlp_setup(wlp, rc, net_dev); if (result < 0) { dev_err(&iface->dev, "Cannot setup WLP\n"); goto error_wlp_setup; diff --git a/drivers/uwb/i1480/i1480u-wlp/netdev.c b/drivers/uwb/i1480/i1480u-wlp/netdev.c index 8802ac43d87..2eafb973cd0 100644 --- a/drivers/uwb/i1480/i1480u-wlp/netdev.c +++ b/drivers/uwb/i1480/i1480u-wlp/netdev.c @@ -207,6 +207,11 @@ int i1480u_open(struct net_device *net_dev) result = i1480u_rx_setup(i1480u); /* Alloc RX stuff */ if (result < 0) goto error_rx_setup; + + result = uwb_radio_start(&wlp->pal); + if (result < 0) + goto error_radio_start; + netif_wake_queue(net_dev); #ifdef i1480u_FLOW_CONTROL result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL);; @@ -215,25 +220,20 @@ int i1480u_open(struct net_device *net_dev) goto error_notif_urb_submit; } #endif - i1480u->uwb_notifs_handler.cb = i1480u_uwb_notifs_cb; - i1480u->uwb_notifs_handler.data = i1480u; - if (uwb_bg_joined(rc)) - netif_carrier_on(net_dev); - else - netif_carrier_off(net_dev); - uwb_notifs_register(rc, &i1480u->uwb_notifs_handler); /* Interface is up with an address, now we can create WSS */ result = wlp_wss_setup(net_dev, &wlp->wss); if (result < 0) { dev_err(dev, "Can't create WSS: %d. \n", result); - goto error_notif_deregister; + goto error_wss_setup; } return 0; -error_notif_deregister: - uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler); +error_wss_setup: #ifdef i1480u_FLOW_CONTROL + usb_kill_urb(i1480u->notif_urb); error_notif_urb_submit: #endif + uwb_radio_stop(&wlp->pal); +error_radio_start: netif_stop_queue(net_dev); i1480u_rx_release(i1480u); error_rx_setup: @@ -248,16 +248,15 @@ int i1480u_stop(struct net_device *net_dev) { struct i1480u *i1480u = netdev_priv(net_dev); struct wlp *wlp = &i1480u->wlp; - struct uwb_rc *rc = wlp->rc; BUG_ON(wlp->rc == NULL); wlp_wss_remove(&wlp->wss); - uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler); netif_carrier_off(net_dev); #ifdef i1480u_FLOW_CONTROL usb_kill_urb(i1480u->notif_urb); #endif netif_stop_queue(net_dev); + uwb_radio_stop(&wlp->pal); i1480u_rx_release(i1480u); i1480u_tx_release(i1480u); return 0; @@ -303,34 +302,6 @@ int i1480u_change_mtu(struct net_device *net_dev, int mtu) return 0; } - -/** - * Callback function to handle events from UWB - * When we see other devices we know the carrier is ok, - * if we are the only device in the beacon group we set the carrier - * state to off. - * */ -void i1480u_uwb_notifs_cb(void *data, struct uwb_dev *uwb_dev, - enum uwb_notifs event) -{ - struct i1480u *i1480u = data; - struct net_device *net_dev = i1480u->net_dev; - struct device *dev = &i1480u->usb_iface->dev; - switch (event) { - case UWB_NOTIF_BG_JOIN: - netif_carrier_on(net_dev); - dev_info(dev, "Link is up\n"); - break; - case UWB_NOTIF_BG_LEAVE: - netif_carrier_off(net_dev); - dev_info(dev, "Link is down\n"); - break; - default: - dev_err(dev, "don't know how to handle event %d from uwb\n", - event); - } -} - /** * Stop the network queue * diff --git a/drivers/uwb/i1480/i1480u-wlp/sysfs.c b/drivers/uwb/i1480/i1480u-wlp/sysfs.c index a1d8ca6ac93..a92a787725f 100644 --- a/drivers/uwb/i1480/i1480u-wlp/sysfs.c +++ b/drivers/uwb/i1480/i1480u-wlp/sysfs.c @@ -226,7 +226,6 @@ ssize_t wlp_tx_inflight_store(struct i1480u_tx_inflight *inflight, * (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a * class_device_attr_NAME or device_attr_NAME (for group registration). */ -#include <linux/version.h> #define i1480u_SHOW(name, fn, param) \ static ssize_t i1480u_show_##name(struct device *dev, \ diff --git a/drivers/uwb/ie-rcv.c b/drivers/uwb/ie-rcv.c new file mode 100644 index 00000000000..917e6d78a79 --- /dev/null +++ b/drivers/uwb/ie-rcv.c @@ -0,0 +1,55 @@ +/* + * Ultra Wide Band + * IE Received notification handling. + * + * Copyright (C) 2008 Cambridge Silicon Radio Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/bitmap.h> +#include "uwb-internal.h" + +/* + * Process an incoming IE Received notification. + */ +int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *evt) +{ + int result = -EINVAL; + struct device *dev = &evt->rc->uwb_dev.dev; + struct uwb_rc_evt_ie_rcv *iercv; + size_t iesize; + + /* Is there enough data to decode it? */ + if (evt->notif.size < sizeof(*iercv)) { + dev_err(dev, "IE Received notification: Not enough data to " + "decode (%zu vs %zu bytes needed)\n", + evt->notif.size, sizeof(*iercv)); + goto error; + } + iercv = container_of(evt->notif.rceb, struct uwb_rc_evt_ie_rcv, rceb); + iesize = le16_to_cpu(iercv->wIELength); + + dev_dbg(dev, "IE received, element ID=%d\n", iercv->IEData[0]); + + if (iercv->IEData[0] == UWB_RELINQUISH_REQUEST_IE) { + dev_warn(dev, "unhandled Relinquish Request IE\n"); + } + + return 0; +error: + return result; +} diff --git a/drivers/uwb/ie.c b/drivers/uwb/ie.c index cf6f3d152b9..ab976686175 100644 --- a/drivers/uwb/ie.c +++ b/drivers/uwb/ie.c @@ -25,8 +25,6 @@ */ #include "uwb-internal.h" -#define D_LOCAL 0 -#include <linux/uwb/debug.h> /** * uwb_ie_next - get the next IE in a buffer @@ -61,6 +59,42 @@ struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len) EXPORT_SYMBOL_GPL(uwb_ie_next); /** + * uwb_ie_dump_hex - print IEs to a character buffer + * @ies: the IEs to print. + * @len: length of all the IEs. + * @buf: the destination buffer. + * @size: size of @buf. + * + * Returns the number of characters written. + */ +int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len, + char *buf, size_t size) +{ + void *ptr; + const struct uwb_ie_hdr *ie; + int r = 0; + u8 *d; + + ptr = (void *)ies; + for (;;) { + ie = uwb_ie_next(&ptr, &len); + if (!ie) + break; + + r += scnprintf(buf + r, size - r, "%02x %02x", + (unsigned)ie->element_id, + (unsigned)ie->length); + d = (uint8_t *)ie + sizeof(struct uwb_ie_hdr); + while (d != ptr && r < size) + r += scnprintf(buf + r, size - r, " %02x", (unsigned)*d++); + if (r < size) + buf[r++] = '\n'; + }; + + return r; +} + +/** * Get the IEs that a radio controller is sending in its beacon * * @uwb_rc: UWB Radio Controller @@ -70,6 +104,7 @@ EXPORT_SYMBOL_GPL(uwb_ie_next); * anything. Once done with the iedata buffer, call * uwb_rc_ie_release(iedata). Don't call kfree on it. */ +static ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie) { ssize_t result; @@ -78,148 +113,35 @@ ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie) struct uwb_rceb *reply = NULL; struct uwb_rc_evt_get_ie *get_ie; - d_fnstart(3, dev, "(%p, %p)\n", uwb_rc, pget_ie); - result = -ENOMEM; cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (cmd == NULL) - goto error_kzalloc; + return -ENOMEM; + cmd->bCommandType = UWB_RC_CET_GENERAL; cmd->wCommand = cpu_to_le16(UWB_RC_CMD_GET_IE); result = uwb_rc_vcmd(uwb_rc, "GET_IE", cmd, sizeof(*cmd), UWB_RC_CET_GENERAL, UWB_RC_CMD_GET_IE, &reply); + kfree(cmd); if (result < 0) - goto error_cmd; + return result; + get_ie = container_of(reply, struct uwb_rc_evt_get_ie, rceb); if (result < sizeof(*get_ie)) { dev_err(dev, "not enough data returned for decoding GET IE " "(%zu bytes received vs %zu needed)\n", result, sizeof(*get_ie)); - result = -EINVAL; + return -EINVAL; } else if (result < sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)) { dev_err(dev, "not enough data returned for decoding GET IE " "payload (%zu bytes received vs %zu needed)\n", result, sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)); - result = -EINVAL; - } else - *pget_ie = get_ie; -error_cmd: - kfree(cmd); -error_kzalloc: - d_fnend(3, dev, "(%p, %p) = %d\n", uwb_rc, pget_ie, (int)result); - return result; -} -EXPORT_SYMBOL_GPL(uwb_rc_get_ie); - - -/* - * Given a pointer to an IE, print it in ASCII/hex followed by a new line - * - * @ie_hdr: pointer to the IE header. Length is in there, and it is - * guaranteed that the ie_hdr->length bytes following it are - * safely accesible. - * - * @_data: context data passed from uwb_ie_for_each(), an struct output_ctx - */ -int uwb_ie_dump_hex(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr, - size_t offset, void *_ctx) -{ - struct uwb_buf_ctx *ctx = _ctx; - const u8 *pl = (void *)(ie_hdr + 1); - u8 pl_itr; - - ctx->bytes += scnprintf(ctx->buf + ctx->bytes, ctx->size - ctx->bytes, - "%02x %02x ", (unsigned) ie_hdr->element_id, - (unsigned) ie_hdr->length); - pl_itr = 0; - while (pl_itr < ie_hdr->length && ctx->bytes < ctx->size) - ctx->bytes += scnprintf(ctx->buf + ctx->bytes, - ctx->size - ctx->bytes, - "%02x ", (unsigned) pl[pl_itr++]); - if (ctx->bytes < ctx->size) - ctx->buf[ctx->bytes++] = '\n'; - return 0; -} -EXPORT_SYMBOL_GPL(uwb_ie_dump_hex); - - -/** - * Verify that a pointer in a buffer points to valid IE - * - * @start: pointer to start of buffer in which IE appears - * @itr: pointer to IE inside buffer that will be verified - * @top: pointer to end of buffer - * - * @returns: 0 if IE is valid, <0 otherwise - * - * Verification involves checking that the buffer can contain a - * header and the amount of data reported in the IE header can be found in - * the buffer. - */ -static -int uwb_rc_ie_verify(struct uwb_dev *uwb_dev, const void *start, - const void *itr, const void *top) -{ - struct device *dev = &uwb_dev->dev; - const struct uwb_ie_hdr *ie_hdr; - - if (top - itr < sizeof(*ie_hdr)) { - dev_err(dev, "Bad IE: no data to decode header " - "(%zu bytes left vs %zu needed) at offset %zu\n", - top - itr, sizeof(*ie_hdr), itr - start); - return -EINVAL; - } - ie_hdr = itr; - itr += sizeof(*ie_hdr); - if (top - itr < ie_hdr->length) { - dev_err(dev, "Bad IE: not enough data for payload " - "(%zu bytes left vs %zu needed) at offset %zu\n", - top - itr, (size_t)ie_hdr->length, - (void *)ie_hdr - start); return -EINVAL; } - return 0; -} - -/** - * Walk a buffer filled with consecutive IE's a buffer - * - * @uwb_dev: UWB device this IEs belong to (for err messages mainly) - * - * @fn: function to call with each IE; if it returns 0, we keep - * traversing the buffer. If it returns !0, we'll stop and return - * that value. - * - * @data: pointer passed to @fn - * - * @buf: buffer where the consecutive IEs are located - * - * @size: size of @buf - * - * Each IE is checked for basic correctness (there is space left for - * the header and the payload). If that test is failed, we stop - * processing. For every good IE, @fn is called. - */ -ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data, - const void *buf, size_t size) -{ - ssize_t result = 0; - const struct uwb_ie_hdr *ie_hdr; - const void *itr = buf, *top = itr + size; - - while (itr < top) { - if (uwb_rc_ie_verify(uwb_dev, buf, itr, top) != 0) - break; - ie_hdr = itr; - itr += sizeof(*ie_hdr) + ie_hdr->length; - result = fn(uwb_dev, ie_hdr, itr - buf, data); - if (result != 0) - break; - } + *pget_ie = get_ie; return result; } -EXPORT_SYMBOL_GPL(uwb_ie_for_each); /** @@ -256,70 +178,6 @@ error_cmd: return result; } -/** - * Determine by IE id if IE is host settable - * WUSB 1.0 [8.6.2.8 Table 8.85] - * - * EXCEPTION: - * All but UWB_IE_WLP appears in Table 8.85 from WUSB 1.0. Setting this IE - * is required for the WLP substack to perform association with its WSS so - * we hope that the WUSB spec will be changed to reflect this. - */ -static -int uwb_rc_ie_is_host_settable(enum uwb_ie element_id) -{ - if (element_id == UWB_PCA_AVAILABILITY || - element_id == UWB_BP_SWITCH_IE || - element_id == UWB_MAC_CAPABILITIES_IE || - element_id == UWB_PHY_CAPABILITIES_IE || - element_id == UWB_APP_SPEC_PROBE_IE || - element_id == UWB_IDENTIFICATION_IE || - element_id == UWB_MASTER_KEY_ID_IE || - element_id == UWB_IE_WLP || - element_id == UWB_APP_SPEC_IE) - return 1; - return 0; -} - - -/** - * Extract Host Settable IEs from IE - * - * @ie_data: pointer to buffer containing all IEs - * @size: size of buffer - * - * @returns: length of buffer that only includes host settable IEs - * - * Given a buffer of IEs we move all Host Settable IEs to front of buffer - * by overwriting the IEs that are not Host Settable. - * Buffer length is adjusted accordingly. - */ -static -ssize_t uwb_rc_parse_host_settable_ie(struct uwb_dev *uwb_dev, - void *ie_data, size_t size) -{ - size_t new_len = size; - struct uwb_ie_hdr *ie_hdr; - size_t ie_length; - void *itr = ie_data, *top = itr + size; - - while (itr < top) { - if (uwb_rc_ie_verify(uwb_dev, ie_data, itr, top) != 0) - break; - ie_hdr = itr; - ie_length = sizeof(*ie_hdr) + ie_hdr->length; - if (uwb_rc_ie_is_host_settable(ie_hdr->element_id)) { - itr += ie_length; - } else { - memmove(itr, itr + ie_length, top - (itr + ie_length)); - new_len -= ie_length; - top -= ie_length; - } - } - return new_len; -} - - /* Cleanup the whole IE management subsystem */ void uwb_rc_ie_init(struct uwb_rc *uwb_rc) { @@ -328,49 +186,34 @@ void uwb_rc_ie_init(struct uwb_rc *uwb_rc) /** - * Set up cache for host settable IEs currently being transmitted + * uwb_rc_ie_setup - setup a radio controller's IE manager + * @uwb_rc: the radio controller. * - * First we just call GET-IE to get the current IEs being transmitted - * (or we workaround and pretend we did) and (because the format is - * the same) reuse that as the IE cache (with the command prefix, as - * explained in 'struct uwb_rc'). + * The current set of IEs are obtained from the hardware with a GET-IE + * command (since the radio controller is not yet beaconing this will + * be just the hardware's MAC and PHY Capability IEs). * - * @returns: size of cache created + * Returns 0 on success; -ve on an error. */ -ssize_t uwb_rc_ie_setup(struct uwb_rc *uwb_rc) +int uwb_rc_ie_setup(struct uwb_rc *uwb_rc) { - struct device *dev = &uwb_rc->uwb_dev.dev; - ssize_t result; - size_t capacity; - struct uwb_rc_evt_get_ie *ie_info; + struct uwb_rc_evt_get_ie *ie_info = NULL; + int capacity; + + capacity = uwb_rc_get_ie(uwb_rc, &ie_info); + if (capacity < 0) + return capacity; - d_fnstart(3, dev, "(%p)\n", uwb_rc); mutex_lock(&uwb_rc->ies_mutex); - result = uwb_rc_get_ie(uwb_rc, &ie_info); - if (result < 0) - goto error_get_ie; - capacity = result; - d_printf(5, dev, "Got IEs %zu bytes (%zu long at %p)\n", result, - (size_t)le16_to_cpu(ie_info->wIELength), ie_info); - - /* Remove IEs that host should not set. */ - result = uwb_rc_parse_host_settable_ie(&uwb_rc->uwb_dev, - ie_info->IEData, le16_to_cpu(ie_info->wIELength)); - if (result < 0) - goto error_parse; - d_printf(5, dev, "purged non-settable IEs to %zu bytes\n", result); - uwb_rc->ies = (void *) ie_info; + + uwb_rc->ies = (struct uwb_rc_cmd_set_ie *)ie_info; uwb_rc->ies->rccb.bCommandType = UWB_RC_CET_GENERAL; uwb_rc->ies->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_IE); uwb_rc->ies_capacity = capacity; - d_printf(5, dev, "IE cache at %p %zu bytes, %zu capacity\n", - ie_info, result, capacity); - result = 0; -error_parse: -error_get_ie: + mutex_unlock(&uwb_rc->ies_mutex); - d_fnend(3, dev, "(%p) = %zu\n", uwb_rc, result); - return result; + + return 0; } @@ -383,26 +226,47 @@ void uwb_rc_ie_release(struct uwb_rc *uwb_rc) } -static -int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr, - size_t offset, void *_ctx) +static int uwb_rc_ie_add_one(struct uwb_rc *rc, const struct uwb_ie_hdr *new_ie) { - size_t *acc_size = _ctx; - *acc_size += sizeof(*ie_hdr) + ie_hdr->length; - d_printf(6, &uwb_dev->dev, "new acc size %zu\n", *acc_size); + struct uwb_rc_cmd_set_ie *new_ies; + void *ptr, *prev_ie; + struct uwb_ie_hdr *ie; + size_t length, new_ie_len, new_capacity, size, prev_size; + + length = le16_to_cpu(rc->ies->wIELength); + new_ie_len = sizeof(struct uwb_ie_hdr) + new_ie->length; + new_capacity = sizeof(struct uwb_rc_cmd_set_ie) + length + new_ie_len; + + if (new_capacity > rc->ies_capacity) { + new_ies = krealloc(rc->ies, new_capacity, GFP_KERNEL); + if (!new_ies) + return -ENOMEM; + rc->ies = new_ies; + } + + ptr = rc->ies->IEData; + size = length; + for (;;) { + prev_ie = ptr; + prev_size = size; + ie = uwb_ie_next(&ptr, &size); + if (!ie || ie->element_id > new_ie->element_id) + break; + } + + memmove(prev_ie + new_ie_len, prev_ie, prev_size); + memcpy(prev_ie, new_ie, new_ie_len); + rc->ies->wIELength = cpu_to_le16(length + new_ie_len); + return 0; } - /** - * Add a new IE to IEs currently being transmitted by device - * + * uwb_rc_ie_add - add new IEs to the radio controller's beacon + * @uwb_rc: the radio controller. * @ies: the buffer containing the new IE or IEs to be added to - * the device's beacon. The buffer will be verified for - * consistence (meaning the headers should be right) and - * consistent with the buffer size. - * @size: size of @ies (in bytes, total buffer size) - * @returns: 0 if ok, <0 errno code on error + * the device's beacon. + * @size: length of all the IEs. * * According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB * after the device sent the first beacon that includes the IEs specified @@ -411,66 +275,40 @@ int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr, * we start beaconing. * * Setting an IE on the device will overwrite all current IEs in device. So - * we take the current IEs being transmitted by the device, append the + * we take the current IEs being transmitted by the device, insert the * new one, and call SET IE with all the IEs needed. * - * The local IE cache will only be updated with the new IE if SET IE - * completed successfully. + * Returns 0 on success; or -ENOMEM. */ int uwb_rc_ie_add(struct uwb_rc *uwb_rc, const struct uwb_ie_hdr *ies, size_t size) { int result = 0; - struct device *dev = &uwb_rc->uwb_dev.dev; - struct uwb_rc_cmd_set_ie *new_ies; - size_t ies_size, total_size, acc_size = 0; - - if (uwb_rc->ies == NULL) - return -ESHUTDOWN; - uwb_ie_for_each(&uwb_rc->uwb_dev, __acc_size, &acc_size, ies, size); - if (acc_size != size) { - dev_err(dev, "BUG: bad IEs, misconstructed headers " - "[%zu bytes reported vs %zu calculated]\n", - size, acc_size); - WARN_ON(1); - return -EINVAL; - } + void *ptr; + const struct uwb_ie_hdr *ie; + mutex_lock(&uwb_rc->ies_mutex); - ies_size = le16_to_cpu(uwb_rc->ies->wIELength); - total_size = sizeof(*uwb_rc->ies) + ies_size; - if (total_size + size > uwb_rc->ies_capacity) { - d_printf(4, dev, "Reallocating IE cache from %p capacity %zu " - "to capacity %zu\n", uwb_rc->ies, uwb_rc->ies_capacity, - total_size + size); - new_ies = kzalloc(total_size + size, GFP_KERNEL); - if (new_ies == NULL) { - dev_err(dev, "No memory for adding new IE\n"); - result = -ENOMEM; - goto error_alloc; - } - memcpy(new_ies, uwb_rc->ies, total_size); - uwb_rc->ies_capacity = total_size + size; - kfree(uwb_rc->ies); - uwb_rc->ies = new_ies; - d_printf(4, dev, "New IE cache at %p capacity %zu\n", - uwb_rc->ies, uwb_rc->ies_capacity); + + ptr = (void *)ies; + for (;;) { + ie = uwb_ie_next(&ptr, &size); + if (!ie) + break; + + result = uwb_rc_ie_add_one(uwb_rc, ie); + if (result < 0) + break; } - memcpy((void *)uwb_rc->ies + total_size, ies, size); - uwb_rc->ies->wIELength = cpu_to_le16(ies_size + size); - if (uwb_rc->beaconing != -1) { - result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies); - if (result < 0) { - dev_err(dev, "Cannot set new IE on device: %d\n", - result); - uwb_rc->ies->wIELength = cpu_to_le16(ies_size); + if (result >= 0) { + if (size == 0) { + if (uwb_rc->beaconing != -1) + result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies); } else - result = 0; + result = -EINVAL; } - d_printf(4, dev, "IEs now occupy %hu bytes of %zu capacity at %p\n", - le16_to_cpu(uwb_rc->ies->wIELength), uwb_rc->ies_capacity, - uwb_rc->ies); -error_alloc: + mutex_unlock(&uwb_rc->ies_mutex); + return result; } EXPORT_SYMBOL_GPL(uwb_rc_ie_add); @@ -489,53 +327,52 @@ EXPORT_SYMBOL_GPL(uwb_rc_ie_add); * beacon. We don't reallocate, we just mark the size smaller. */ static -int uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove) +void uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove) { - struct uwb_ie_hdr *ie_hdr; - size_t new_len = le16_to_cpu(uwb_rc->ies->wIELength); - void *itr = uwb_rc->ies->IEData; - void *top = itr + new_len; - - while (itr < top) { - ie_hdr = itr; - if (ie_hdr->element_id != to_remove) { - itr += sizeof(*ie_hdr) + ie_hdr->length; - } else { - int ie_length; - ie_length = sizeof(*ie_hdr) + ie_hdr->length; - if (top - itr != ie_length) - memmove(itr, itr + ie_length, top - itr + ie_length); - top -= ie_length; - new_len -= ie_length; + struct uwb_ie_hdr *ie; + size_t len = le16_to_cpu(uwb_rc->ies->wIELength); + void *ptr; + size_t size; + + ptr = uwb_rc->ies->IEData; + size = len; + for (;;) { + ie = uwb_ie_next(&ptr, &size); + if (!ie) + break; + if (ie->element_id == to_remove) { + len -= sizeof(struct uwb_ie_hdr) + ie->length; + memmove(ie, ptr, size); + ptr = ie; } } - uwb_rc->ies->wIELength = cpu_to_le16(new_len); - return 0; + uwb_rc->ies->wIELength = cpu_to_le16(len); } /** - * Remove an IE currently being transmitted by device + * uwb_rc_ie_rm - remove an IE from the radio controller's beacon + * @uwb_rc: the radio controller. + * @element_id: the element ID of the IE to remove. * - * @element_id: id of IE to be removed from device's beacon + * Only IEs previously added with uwb_rc_ie_add() may be removed. + * + * Returns 0 on success; or -ve the SET-IE command to the radio + * controller failed. */ int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id) { - struct device *dev = &uwb_rc->uwb_dev.dev; - int result; + int result = 0; - if (uwb_rc->ies == NULL) - return -ESHUTDOWN; mutex_lock(&uwb_rc->ies_mutex); - result = uwb_rc_ie_cache_rm(uwb_rc, element_id); - if (result < 0) - dev_err(dev, "Cannot remove IE from cache.\n"); - if (uwb_rc->beaconing != -1) { + + uwb_rc_ie_cache_rm(uwb_rc, element_id); + + if (uwb_rc->beaconing != -1) result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies); - if (result < 0) - dev_err(dev, "Cannot set new IE on device.\n"); - } + mutex_unlock(&uwb_rc->ies_mutex); + return result; } EXPORT_SYMBOL_GPL(uwb_rc_ie_rm); diff --git a/drivers/uwb/lc-rc.c b/drivers/uwb/lc-rc.c index ee5772f00d4..9cf21e6bb62 100644 --- a/drivers/uwb/lc-rc.c +++ b/drivers/uwb/lc-rc.c @@ -36,8 +36,6 @@ #include <linux/etherdevice.h> #include <linux/usb.h> -#define D_LOCAL 1 -#include <linux/uwb/debug.h> #include "uwb-internal.h" static int uwb_rc_index_match(struct device *dev, void *data) @@ -81,9 +79,7 @@ static void uwb_rc_sys_release(struct device *dev) struct uwb_dev *uwb_dev = container_of(dev, struct uwb_dev, dev); struct uwb_rc *rc = container_of(uwb_dev, struct uwb_rc, uwb_dev); - uwb_rc_neh_destroy(rc); uwb_rc_ie_release(rc); - d_printf(1, dev, "freed uwb_rc %p\n", rc); kfree(rc); } @@ -100,6 +96,8 @@ void uwb_rc_init(struct uwb_rc *rc) rc->scan_type = UWB_SCAN_DISABLED; INIT_LIST_HEAD(&rc->notifs_chain.list); mutex_init(&rc->notifs_chain.mutex); + INIT_LIST_HEAD(&rc->uwb_beca.list); + mutex_init(&rc->uwb_beca.mutex); uwb_drp_avail_init(rc); uwb_rc_ie_init(rc); uwb_rsv_init(rc); @@ -191,9 +189,9 @@ static int uwb_rc_setup(struct uwb_rc *rc) int result; struct device *dev = &rc->uwb_dev.dev; - result = uwb_rc_reset(rc); + result = uwb_radio_setup(rc); if (result < 0) { - dev_err(dev, "cannot reset UWB radio: %d\n", result); + dev_err(dev, "cannot setup UWB radio: %d\n", result); goto error; } result = uwb_rc_mac_addr_setup(rc); @@ -250,6 +248,12 @@ int uwb_rc_add(struct uwb_rc *rc, struct device *parent_dev, void *priv) rc->priv = priv; + init_waitqueue_head(&rc->uwbd.wq); + INIT_LIST_HEAD(&rc->uwbd.event_list); + spin_lock_init(&rc->uwbd.event_list_lock); + + uwbd_start(rc); + result = rc->start(rc); if (result < 0) goto error_rc_start; @@ -284,7 +288,7 @@ error_sys_add: error_dev_add: error_rc_setup: rc->stop(rc); - uwbd_flush(rc); + uwbd_stop(rc); error_rc_start: return result; } @@ -306,25 +310,24 @@ void uwb_rc_rm(struct uwb_rc *rc) rc->ready = 0; uwb_dbg_del_rc(rc); - uwb_rsv_cleanup(rc); - uwb_rc_ie_rm(rc, UWB_IDENTIFICATION_IE); - if (rc->beaconing >= 0) - uwb_rc_beacon(rc, -1, 0); - if (rc->scan_type != UWB_SCAN_DISABLED) - uwb_rc_scan(rc, rc->scanning, UWB_SCAN_DISABLED, 0); - uwb_rc_reset(rc); + uwb_rsv_remove_all(rc); + uwb_radio_shutdown(rc); rc->stop(rc); - uwbd_flush(rc); + + uwbd_stop(rc); + uwb_rc_neh_destroy(rc); uwb_dev_lock(&rc->uwb_dev); rc->priv = NULL; rc->cmd = NULL; uwb_dev_unlock(&rc->uwb_dev); - mutex_lock(&uwb_beca.mutex); + mutex_lock(&rc->uwb_beca.mutex); uwb_dev_for_each(rc, uwb_dev_offair_helper, NULL); __uwb_rc_sys_rm(rc); - mutex_unlock(&uwb_beca.mutex); + mutex_unlock(&rc->uwb_beca.mutex); + uwb_rsv_cleanup(rc); + uwb_beca_release(rc); uwb_dev_rm(&rc->uwb_dev); } EXPORT_SYMBOL_GPL(uwb_rc_rm); @@ -468,28 +471,3 @@ void uwb_rc_put(struct uwb_rc *rc) __uwb_rc_put(rc); } EXPORT_SYMBOL_GPL(uwb_rc_put); - -/* - * - * - */ -ssize_t uwb_rc_print_IEs(struct uwb_rc *uwb_rc, char *buf, size_t size) -{ - ssize_t result; - struct uwb_rc_evt_get_ie *ie_info; - struct uwb_buf_ctx ctx; - - result = uwb_rc_get_ie(uwb_rc, &ie_info); - if (result < 0) - goto error_get_ie; - ctx.buf = buf; - ctx.size = size; - ctx.bytes = 0; - uwb_ie_for_each(&uwb_rc->uwb_dev, uwb_ie_dump_hex, &ctx, - ie_info->IEData, result - sizeof(*ie_info)); - result = ctx.bytes; - kfree(ie_info); -error_get_ie: - return result; -} - diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c index 9b4eb64327a..48b4ece1a62 100644 --- a/drivers/uwb/neh.c +++ b/drivers/uwb/neh.c @@ -254,7 +254,6 @@ error_kzalloc: static void __uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh) { - del_timer(&neh->timer); __uwb_rc_ctx_put(rc, neh); list_del(&neh->list_node); } @@ -275,6 +274,7 @@ void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh) __uwb_rc_neh_rm(rc, neh); spin_unlock_irqrestore(&rc->neh_lock, flags); + del_timer_sync(&neh->timer); uwb_rc_neh_put(neh); } @@ -438,9 +438,10 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size rceb->bEventContext, size); } else { neh = uwb_rc_neh_lookup(rc, rceb); - if (neh) + if (neh) { + del_timer_sync(&neh->timer); uwb_rc_neh_cb(neh, rceb, size); - else + } else dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n", rceb->bEventType, le16_to_cpu(rceb->wEvent), rceb->bEventContext, size); @@ -562,16 +563,22 @@ EXPORT_SYMBOL_GPL(uwb_rc_neh_grok); */ void uwb_rc_neh_error(struct uwb_rc *rc, int error) { - struct uwb_rc_neh *neh, *next; + struct uwb_rc_neh *neh; unsigned long flags; - BUG_ON(error >= 0); - spin_lock_irqsave(&rc->neh_lock, flags); - list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) { + for (;;) { + spin_lock_irqsave(&rc->neh_lock, flags); + if (list_empty(&rc->neh_list)) { + spin_unlock_irqrestore(&rc->neh_lock, flags); + break; + } + neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node); __uwb_rc_neh_rm(rc, neh); + spin_unlock_irqrestore(&rc->neh_lock, flags); + + del_timer_sync(&neh->timer); uwb_rc_neh_cb(neh, NULL, error); } - spin_unlock_irqrestore(&rc->neh_lock, flags); } EXPORT_SYMBOL_GPL(uwb_rc_neh_error); @@ -583,10 +590,14 @@ static void uwb_rc_neh_timer(unsigned long arg) unsigned long flags; spin_lock_irqsave(&rc->neh_lock, flags); - __uwb_rc_neh_rm(rc, neh); + if (neh->context) + __uwb_rc_neh_rm(rc, neh); + else + neh = NULL; spin_unlock_irqrestore(&rc->neh_lock, flags); - uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT); + if (neh) + uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT); } /** Initializes the @rc's neh subsystem @@ -605,12 +616,19 @@ void uwb_rc_neh_create(struct uwb_rc *rc) void uwb_rc_neh_destroy(struct uwb_rc *rc) { unsigned long flags; - struct uwb_rc_neh *neh, *next; + struct uwb_rc_neh *neh; - spin_lock_irqsave(&rc->neh_lock, flags); - list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) { + for (;;) { + spin_lock_irqsave(&rc->neh_lock, flags); + if (list_empty(&rc->neh_list)) { + spin_unlock_irqrestore(&rc->neh_lock, flags); + break; + } + neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node); __uwb_rc_neh_rm(rc, neh); + spin_unlock_irqrestore(&rc->neh_lock, flags); + + del_timer_sync(&neh->timer); uwb_rc_neh_put(neh); } - spin_unlock_irqrestore(&rc->neh_lock, flags); } diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c index 1afb38eacb9..605765124f5 100644 --- a/drivers/uwb/pal.c +++ b/drivers/uwb/pal.c @@ -32,13 +32,13 @@ EXPORT_SYMBOL_GPL(uwb_pal_init); /** * uwb_pal_register - register a UWB PAL - * @rc: the radio controller the PAL will be using * @pal: the PAL * * The PAL must be initialized with uwb_pal_init(). */ -int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal) +int uwb_pal_register(struct uwb_pal *pal) { + struct uwb_rc *rc = pal->rc; int ret; if (pal->device) { @@ -54,9 +54,9 @@ int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal) } } - spin_lock(&rc->pal_lock); + mutex_lock(&rc->uwb_dev.mutex); list_add(&pal->node, &rc->pals); - spin_unlock(&rc->pal_lock); + mutex_unlock(&rc->uwb_dev.mutex); return 0; } @@ -64,14 +64,17 @@ EXPORT_SYMBOL_GPL(uwb_pal_register); /** * uwb_pal_register - unregister a UWB PAL - * @rc: the radio controller the PAL was using * @pal: the PAL */ -void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal) +void uwb_pal_unregister(struct uwb_pal *pal) { - spin_lock(&rc->pal_lock); + struct uwb_rc *rc = pal->rc; + + uwb_radio_stop(pal); + + mutex_lock(&rc->uwb_dev.mutex); list_del(&pal->node); - spin_unlock(&rc->pal_lock); + mutex_unlock(&rc->uwb_dev.mutex); if (pal->device) { sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name); @@ -86,6 +89,5 @@ EXPORT_SYMBOL_GPL(uwb_pal_unregister); */ void uwb_rc_pal_init(struct uwb_rc *rc) { - spin_lock_init(&rc->pal_lock); INIT_LIST_HEAD(&rc->pals); } diff --git a/drivers/uwb/radio.c b/drivers/uwb/radio.c new file mode 100644 index 00000000000..f0d55495f5e --- /dev/null +++ b/drivers/uwb/radio.c @@ -0,0 +1,202 @@ +/* + * UWB radio (channel) management. + * + * Copyright (C) 2008 Cambridge Silicon Radio Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ +#include <linux/kernel.h> +#include <linux/uwb.h> + +#include "uwb-internal.h" + + +static int uwb_radio_select_channel(struct uwb_rc *rc) +{ + /* + * Default to channel 9 (BG1, TFC1) unless the user has + * selected a specific channel or there are no active PALs. + */ + if (rc->active_pals == 0) + return -1; + if (rc->beaconing_forced) + return rc->beaconing_forced; + return 9; +} + + +/* + * Notify all active PALs that the channel has changed. + */ +static void uwb_radio_channel_changed(struct uwb_rc *rc, int channel) +{ + struct uwb_pal *pal; + + list_for_each_entry(pal, &rc->pals, node) { + if (pal->channel && channel != pal->channel) { + pal->channel = channel; + if (pal->channel_changed) + pal->channel_changed(pal, pal->channel); + } + } +} + +/* + * Change to a new channel and notify any active PALs of the new + * channel. + * + * When stopping the radio, PALs need to be notified first so they can + * terminate any active reservations. + */ +static int uwb_radio_change_channel(struct uwb_rc *rc, int channel) +{ + int ret = 0; + + if (channel == -1) + uwb_radio_channel_changed(rc, channel); + + if (channel != rc->beaconing) { + if (rc->beaconing != -1 && channel != -1) { + /* + * FIXME: should signal the channel change + * with a Channel Change IE. + */ + ret = uwb_radio_change_channel(rc, -1); + if (ret < 0) + return ret; + } + ret = uwb_rc_beacon(rc, channel, 0); + } + + if (channel != -1) + uwb_radio_channel_changed(rc, rc->beaconing); + + return ret; +} + +/** + * uwb_radio_start - request that the radio be started + * @pal: the PAL making the request. + * + * If the radio is not already active, aa suitable channel is selected + * and beacons are started. + */ +int uwb_radio_start(struct uwb_pal *pal) +{ + struct uwb_rc *rc = pal->rc; + int ret = 0; + + mutex_lock(&rc->uwb_dev.mutex); + + if (!pal->channel) { + pal->channel = -1; + rc->active_pals++; + ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc)); + } + + mutex_unlock(&rc->uwb_dev.mutex); + return ret; +} +EXPORT_SYMBOL_GPL(uwb_radio_start); + +/** + * uwb_radio_stop - request tha the radio be stopped. + * @pal: the PAL making the request. + * + * Stops the radio if no other PAL is making use of it. + */ +void uwb_radio_stop(struct uwb_pal *pal) +{ + struct uwb_rc *rc = pal->rc; + + mutex_lock(&rc->uwb_dev.mutex); + + if (pal->channel) { + rc->active_pals--; + uwb_radio_change_channel(rc, uwb_radio_select_channel(rc)); + pal->channel = 0; + } + + mutex_unlock(&rc->uwb_dev.mutex); +} +EXPORT_SYMBOL_GPL(uwb_radio_stop); + +/* + * uwb_radio_force_channel - force a specific channel to be used + * @rc: the radio controller. + * @channel: the channel to use; -1 to force the radio to stop; 0 to + * use the default channel selection algorithm. + */ +int uwb_radio_force_channel(struct uwb_rc *rc, int channel) +{ + int ret = 0; + + mutex_lock(&rc->uwb_dev.mutex); + + rc->beaconing_forced = channel; + ret = uwb_radio_change_channel(rc, uwb_radio_select_channel(rc)); + + mutex_unlock(&rc->uwb_dev.mutex); + return ret; +} + +/* + * uwb_radio_setup - setup the radio manager + * @rc: the radio controller. + * + * The radio controller is reset to ensure it's in a known state + * before it's used. + */ +int uwb_radio_setup(struct uwb_rc *rc) +{ + return uwb_rc_reset(rc); +} + +/* + * uwb_radio_reset_state - reset any radio manager state + * @rc: the radio controller. + * + * All internal radio manager state is reset to values corresponding + * to a reset radio controller. + */ +void uwb_radio_reset_state(struct uwb_rc *rc) +{ + struct uwb_pal *pal; + + mutex_lock(&rc->uwb_dev.mutex); + + list_for_each_entry(pal, &rc->pals, node) { + if (pal->channel) { + pal->channel = -1; + if (pal->channel_changed) + pal->channel_changed(pal, -1); + } + } + + rc->beaconing = -1; + rc->scanning = -1; + + mutex_unlock(&rc->uwb_dev.mutex); +} + +/* + * uwb_radio_shutdown - shutdown the radio manager + * @rc: the radio controller. + * + * The radio controller is reset. + */ +void uwb_radio_shutdown(struct uwb_rc *rc) +{ + uwb_radio_reset_state(rc); + uwb_rc_reset(rc); +} diff --git a/drivers/uwb/reset.c b/drivers/uwb/reset.c index 8de856fa795..ce8283cc809 100644 --- a/drivers/uwb/reset.c +++ b/drivers/uwb/reset.c @@ -323,17 +323,16 @@ int uwbd_msg_handle_reset(struct uwb_event *evt) struct uwb_rc *rc = evt->rc; int ret; - /* Need to prevent the RC hardware module going away while in - the rc->reset() call. */ - if (!try_module_get(rc->owner)) - return 0; - dev_info(&rc->uwb_dev.dev, "resetting radio controller\n"); ret = rc->reset(rc); - if (ret) + if (ret) { dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret); - - module_put(rc->owner); + goto error; + } + return 0; +error: + /* Nothing can be done except try the reset again. */ + uwb_rc_reset_all(rc); return ret; } @@ -360,3 +359,33 @@ void uwb_rc_reset_all(struct uwb_rc *rc) uwbd_event_queue(evt); } EXPORT_SYMBOL_GPL(uwb_rc_reset_all); + +void uwb_rc_pre_reset(struct uwb_rc *rc) +{ + rc->stop(rc); + uwbd_flush(rc); + + uwb_radio_reset_state(rc); + uwb_rsv_remove_all(rc); +} +EXPORT_SYMBOL_GPL(uwb_rc_pre_reset); + +void uwb_rc_post_reset(struct uwb_rc *rc) +{ + int ret; + + ret = rc->start(rc); + if (ret) + goto error; + ret = uwb_rc_mac_addr_set(rc, &rc->uwb_dev.mac_addr); + if (ret) + goto error; + ret = uwb_rc_dev_addr_set(rc, &rc->uwb_dev.dev_addr); + if (ret) + goto error; + return; +error: + /* Nothing can be done except try the reset again. */ + uwb_rc_reset_all(rc); +} +EXPORT_SYMBOL_GPL(uwb_rc_post_reset); diff --git a/drivers/uwb/rsv.c b/drivers/uwb/rsv.c index bae16204576..1cd84f92754 100644 --- a/drivers/uwb/rsv.c +++ b/drivers/uwb/rsv.c @@ -15,7 +15,6 @@ * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ -#include <linux/version.h> #include <linux/kernel.h> #include <linux/uwb.h> @@ -82,6 +81,23 @@ static void uwb_rsv_dump(struct uwb_rsv *rsv) dev_dbg(dev, "rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state)); } +static void uwb_rsv_release(struct kref *kref) +{ + struct uwb_rsv *rsv = container_of(kref, struct uwb_rsv, kref); + + kfree(rsv); +} + +static void uwb_rsv_get(struct uwb_rsv *rsv) +{ + kref_get(&rsv->kref); +} + +static void uwb_rsv_put(struct uwb_rsv *rsv) +{ + kref_put(&rsv->kref, uwb_rsv_release); +} + /* * Get a free stream index for a reservation. * @@ -285,7 +301,8 @@ void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state) switch (new_state) { case UWB_RSV_STATE_NONE: uwb_drp_avail_release(rsv->rc, &rsv->mas); - uwb_rsv_put_stream(rsv); + if (uwb_rsv_is_owner(rsv)) + uwb_rsv_put_stream(rsv); uwb_rsv_state_update(rsv, UWB_RSV_STATE_NONE); uwb_rsv_callback(rsv); break; @@ -324,6 +341,7 @@ static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc) INIT_LIST_HEAD(&rsv->rc_node); INIT_LIST_HEAD(&rsv->pal_node); + kref_init(&rsv->kref); init_timer(&rsv->timer); rsv->timer.function = uwb_rsv_timer; rsv->timer.data = (unsigned long)rsv; @@ -333,14 +351,6 @@ static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc) return rsv; } -static void uwb_rsv_free(struct uwb_rsv *rsv) -{ - uwb_dev_put(rsv->owner); - if (rsv->target.type == UWB_RSV_TARGET_DEV) - uwb_dev_put(rsv->target.dev); - kfree(rsv); -} - /** * uwb_rsv_create - allocate and initialize a UWB reservation structure * @rc: the radio controller @@ -374,23 +384,23 @@ void uwb_rsv_remove(struct uwb_rsv *rsv) if (rsv->state != UWB_RSV_STATE_NONE) uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE); del_timer_sync(&rsv->timer); - list_del(&rsv->rc_node); - uwb_rsv_free(rsv); + uwb_dev_put(rsv->owner); + if (rsv->target.type == UWB_RSV_TARGET_DEV) + uwb_dev_put(rsv->target.dev); + + list_del_init(&rsv->rc_node); + uwb_rsv_put(rsv); } /** * uwb_rsv_destroy - free a UWB reservation structure * @rsv: the reservation to free * - * The reservation will be terminated if it is pending or established. + * The reservation must already be terminated. */ void uwb_rsv_destroy(struct uwb_rsv *rsv) { - struct uwb_rc *rc = rsv->rc; - - mutex_lock(&rc->rsvs_mutex); - uwb_rsv_remove(rsv); - mutex_unlock(&rc->rsvs_mutex); + uwb_rsv_put(rsv); } EXPORT_SYMBOL_GPL(uwb_rsv_destroy); @@ -422,6 +432,7 @@ int uwb_rsv_establish(struct uwb_rsv *rsv) goto out; } + uwb_rsv_get(rsv); list_add_tail(&rsv->rc_node, &rc->reservations); rsv->owner = &rc->uwb_dev; uwb_dev_get(rsv->owner); @@ -477,9 +488,14 @@ EXPORT_SYMBOL_GPL(uwb_rsv_terminate); * * Reservation requests from peers are denied unless a PAL accepts it * by calling this function. + * + * The PAL call uwb_rsv_destroy() for all accepted reservations before + * calling uwb_pal_unregister(). */ void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv) { + uwb_rsv_get(rsv); + rsv->callback = cb; rsv->pal_priv = pal_priv; rsv->state = UWB_RSV_STATE_T_ACCEPTED; @@ -532,7 +548,6 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc, rsv->target.dev = &rc->uwb_dev; rsv->type = uwb_ie_drp_type(drp_ie); rsv->stream = uwb_ie_drp_stream_index(drp_ie); - set_bit(rsv->stream, rsv->owner->streams); uwb_drp_ie_to_bm(&rsv->mas, drp_ie); /* @@ -540,14 +555,14 @@ static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc, * deny the request. */ rsv->state = UWB_RSV_STATE_T_DENIED; - spin_lock(&rc->pal_lock); + mutex_lock(&rc->uwb_dev.mutex); list_for_each_entry(pal, &rc->pals, node) { if (pal->new_rsv) - pal->new_rsv(rsv); + pal->new_rsv(pal, rsv); if (rsv->state == UWB_RSV_STATE_T_ACCEPTED) break; } - spin_unlock(&rc->pal_lock); + mutex_unlock(&rc->uwb_dev.mutex); list_add_tail(&rsv->rc_node, &rc->reservations); state = rsv->state; @@ -644,6 +659,25 @@ static void uwb_rsv_timer(unsigned long arg) uwb_rsv_sched_update(rsv->rc); } +/** + * uwb_rsv_remove_all - remove all reservations + * @rc: the radio controller + * + * A DRP IE update is not done. + */ +void uwb_rsv_remove_all(struct uwb_rc *rc) +{ + struct uwb_rsv *rsv, *t; + + mutex_lock(&rc->rsvs_mutex); + list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) { + uwb_rsv_remove(rsv); + } + mutex_unlock(&rc->rsvs_mutex); + + cancel_work_sync(&rc->rsv_update_work); +} + void uwb_rsv_init(struct uwb_rc *rc) { INIT_LIST_HEAD(&rc->reservations); @@ -667,14 +701,6 @@ int uwb_rsv_setup(struct uwb_rc *rc) void uwb_rsv_cleanup(struct uwb_rc *rc) { - struct uwb_rsv *rsv, *t; - - mutex_lock(&rc->rsvs_mutex); - list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) { - uwb_rsv_remove(rsv); - } - mutex_unlock(&rc->rsvs_mutex); - - cancel_work_sync(&rc->rsv_update_work); + uwb_rsv_remove_all(rc); destroy_workqueue(rc->rsv_workq); } diff --git a/drivers/uwb/umc-bus.c b/drivers/uwb/umc-bus.c index 2d8d62d9f53..5ad36164c13 100644 --- a/drivers/uwb/umc-bus.c +++ b/drivers/uwb/umc-bus.c @@ -11,23 +11,48 @@ #include <linux/uwb/umc.h> #include <linux/pci.h> -static int umc_bus_unbind_helper(struct device *dev, void *data) +static int umc_bus_pre_reset_helper(struct device *dev, void *data) { - struct device *parent = data; + int ret = 0; - if (dev->parent == parent && dev->driver) - device_release_driver(dev); - return 0; + if (dev->driver) { + struct umc_dev *umc = to_umc_dev(dev); + struct umc_driver *umc_drv = to_umc_driver(dev->driver); + + if (umc_drv->pre_reset) + ret = umc_drv->pre_reset(umc); + else + device_release_driver(dev); + } + return ret; +} + +static int umc_bus_post_reset_helper(struct device *dev, void *data) +{ + int ret = 0; + + if (dev->driver) { + struct umc_dev *umc = to_umc_dev(dev); + struct umc_driver *umc_drv = to_umc_driver(dev->driver); + + if (umc_drv->post_reset) + ret = umc_drv->post_reset(umc); + } else + ret = device_attach(dev); + + return ret; } /** * umc_controller_reset - reset the whole UMC controller * @umc: the UMC device for the radio controller. * - * Drivers will be unbound from all UMC devices belonging to the - * controller and then the radio controller will be rebound. The - * radio controller is expected to do a full hardware reset when it is - * probed. + * Drivers or all capabilities of the controller will have their + * pre_reset methods called or be unbound from their device. Then all + * post_reset methods will be called or the drivers will be rebound. + * + * Radio controllers must provide pre_reset and post_reset methods and + * reset the hardware in their start method. * * If this is called while a probe() or remove() is in progress it * will return -EAGAIN and not perform the reset. @@ -35,14 +60,13 @@ static int umc_bus_unbind_helper(struct device *dev, void *data) int umc_controller_reset(struct umc_dev *umc) { struct device *parent = umc->dev.parent; - int ret; + int ret = 0; - if (down_trylock(&parent->sem)) + if(down_trylock(&parent->sem)) return -EAGAIN; - bus_for_each_dev(&umc_bus_type, NULL, parent, umc_bus_unbind_helper); - ret = device_attach(&umc->dev); - if (ret == 1) - ret = 0; + ret = device_for_each_child(parent, parent, umc_bus_pre_reset_helper); + if (ret >= 0) + device_for_each_child(parent, parent, umc_bus_post_reset_helper); up(&parent->sem); return ret; @@ -75,10 +99,10 @@ static int umc_bus_rescan_helper(struct device *dev, void *data) if (!dev->driver) ret = device_attach(dev); - return ret < 0 ? ret : 0; + return ret; } -static void umc_bus_rescan(void) +static void umc_bus_rescan(struct device *parent) { int err; @@ -86,7 +110,7 @@ static void umc_bus_rescan(void) * We can't use bus_rescan_devices() here as it deadlocks when * it tries to retake the dev->parent semaphore. */ - err = bus_for_each_dev(&umc_bus_type, NULL, NULL, umc_bus_rescan_helper); + err = device_for_each_child(parent, NULL, umc_bus_rescan_helper); if (err < 0) printk(KERN_WARNING "%s: rescan of bus failed: %d\n", KBUILD_MODNAME, err); @@ -120,7 +144,7 @@ static int umc_device_probe(struct device *dev) if (err) put_device(dev); else - umc_bus_rescan(); + umc_bus_rescan(dev->parent); return err; } diff --git a/drivers/uwb/umc-dev.c b/drivers/uwb/umc-dev.c index aa44e1c1a10..53207e14cd8 100644 --- a/drivers/uwb/umc-dev.c +++ b/drivers/uwb/umc-dev.c @@ -31,8 +31,7 @@ struct umc_dev *umc_device_create(struct device *parent, int n) umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL); if (umc) { - snprintf(umc->dev.bus_id, sizeof(umc->dev.bus_id), "%s-%d", - parent->bus_id, n); + dev_set_name(&umc->dev, "%s-%d", dev_name(parent), n); umc->dev.parent = parent; umc->dev.bus = &umc_bus_type; umc->dev.release = umc_device_release; diff --git a/drivers/uwb/uwb-debug.c b/drivers/uwb/uwb-debug.c index 6d232c35d07..e02fb83469d 100644 --- a/drivers/uwb/uwb-debug.c +++ b/drivers/uwb/uwb-debug.c @@ -33,8 +33,6 @@ #include <linux/seq_file.h> #include <linux/uwb/debug-cmd.h> -#define D_LOCAL 0 -#include <linux/uwb/debug.h> #include "uwb-internal.h" @@ -104,6 +102,11 @@ static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv) dev_dbg(dev, "debug: rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state)); + + if (rsv->state == UWB_RSV_STATE_NONE) { + list_del(&rsv->pal_node); + uwb_rsv_destroy(rsv); + } } static int cmd_rsv_establish(struct uwb_rc *rc, @@ -153,16 +156,28 @@ static int cmd_rsv_terminate(struct uwb_rc *rc, found = rsv; break; } + i++; } if (!found) return -EINVAL; - list_del(&found->pal_node); uwb_rsv_terminate(found); return 0; } +static int cmd_ie_add(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_add) +{ + return uwb_rc_ie_add(rc, + (const struct uwb_ie_hdr *) ie_to_add->data, + ie_to_add->len); +} + +static int cmd_ie_rm(struct uwb_rc *rc, struct uwb_dbg_cmd_ie *ie_to_rm) +{ + return uwb_rc_ie_rm(rc, ie_to_rm->data[0]); +} + static int command_open(struct inode *inode, struct file *file) { file->private_data = inode->i_private; @@ -175,7 +190,7 @@ static ssize_t command_write(struct file *file, const char __user *buf, { struct uwb_rc *rc = file->private_data; struct uwb_dbg_cmd cmd; - int ret; + int ret = 0; if (len != sizeof(struct uwb_dbg_cmd)) return -EINVAL; @@ -190,6 +205,18 @@ static ssize_t command_write(struct file *file, const char __user *buf, case UWB_DBG_CMD_RSV_TERMINATE: ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate); break; + case UWB_DBG_CMD_IE_ADD: + ret = cmd_ie_add(rc, &cmd.ie_add); + break; + case UWB_DBG_CMD_IE_RM: + ret = cmd_ie_rm(rc, &cmd.ie_rm); + break; + case UWB_DBG_CMD_RADIO_START: + ret = uwb_radio_start(&rc->dbg->pal); + break; + case UWB_DBG_CMD_RADIO_STOP: + uwb_radio_stop(&rc->dbg->pal); + break; default: return -EINVAL; } @@ -283,12 +310,24 @@ static struct file_operations drp_avail_fops = { .owner = THIS_MODULE, }; -static void uwb_dbg_new_rsv(struct uwb_rsv *rsv) +static void uwb_dbg_channel_changed(struct uwb_pal *pal, int channel) { - struct uwb_rc *rc = rsv->rc; + struct device *dev = &pal->rc->uwb_dev.dev; - if (rc->dbg->accept) - uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL); + if (channel > 0) + dev_info(dev, "debug: channel %d started\n", channel); + else + dev_info(dev, "debug: channel stopped\n"); +} + +static void uwb_dbg_new_rsv(struct uwb_pal *pal, struct uwb_rsv *rsv) +{ + struct uwb_dbg *dbg = container_of(pal, struct uwb_dbg, pal); + + if (dbg->accept) { + list_add_tail(&rsv->pal_node, &dbg->rsvs); + uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, dbg); + } } /** @@ -304,8 +343,11 @@ void uwb_dbg_add_rc(struct uwb_rc *rc) INIT_LIST_HEAD(&rc->dbg->rsvs); uwb_pal_init(&rc->dbg->pal); + rc->dbg->pal.rc = rc; + rc->dbg->pal.channel_changed = uwb_dbg_channel_changed; rc->dbg->pal.new_rsv = uwb_dbg_new_rsv; - uwb_pal_register(rc, &rc->dbg->pal); + uwb_pal_register(&rc->dbg->pal); + if (root_dir) { rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev), root_dir); @@ -325,7 +367,7 @@ void uwb_dbg_add_rc(struct uwb_rc *rc) } /** - * uwb_dbg_add_rc - remove a radio controller's debug interface + * uwb_dbg_del_rc - remove a radio controller's debug interface * @rc: the radio controller */ void uwb_dbg_del_rc(struct uwb_rc *rc) @@ -336,10 +378,10 @@ void uwb_dbg_del_rc(struct uwb_rc *rc) return; list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) { - uwb_rsv_destroy(rsv); + uwb_rsv_terminate(rsv); } - uwb_pal_unregister(rc, &rc->dbg->pal); + uwb_pal_unregister(&rc->dbg->pal); if (root_dir) { debugfs_remove(rc->dbg->drp_avail_f); diff --git a/drivers/uwb/uwb-internal.h b/drivers/uwb/uwb-internal.h index 2ad307d1296..9c0cdb4ded0 100644 --- a/drivers/uwb/uwb-internal.h +++ b/drivers/uwb/uwb-internal.h @@ -66,14 +66,14 @@ extern int uwb_rc_scan(struct uwb_rc *rc, unsigned channel, enum uwb_scan_type type, unsigned bpst_offset); extern int uwb_rc_send_all_drp_ie(struct uwb_rc *rc); -extern ssize_t uwb_rc_print_IEs(struct uwb_rc *rc, char *, size_t); -extern void uwb_rc_ie_init(struct uwb_rc *); -extern void uwb_rc_ie_init(struct uwb_rc *); -extern ssize_t uwb_rc_ie_setup(struct uwb_rc *); -extern void uwb_rc_ie_release(struct uwb_rc *); -extern int uwb_rc_ie_add(struct uwb_rc *, - const struct uwb_ie_hdr *, size_t); -extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie); + +void uwb_rc_ie_init(struct uwb_rc *); +int uwb_rc_ie_setup(struct uwb_rc *); +void uwb_rc_ie_release(struct uwb_rc *); +int uwb_ie_dump_hex(const struct uwb_ie_hdr *ies, size_t len, + char *buf, size_t size); +int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *); + extern const char *uwb_rc_strerror(unsigned code); @@ -160,13 +160,14 @@ struct uwb_event { }; }; -extern void uwbd_start(void); -extern void uwbd_stop(void); +extern void uwbd_start(struct uwb_rc *rc); +extern void uwbd_stop(struct uwb_rc *rc); extern struct uwb_event *uwb_event_alloc(size_t, gfp_t gfp_mask); extern void uwbd_event_queue(struct uwb_event *); void uwbd_flush(struct uwb_rc *rc); /* UWB event handlers */ +extern int uwbd_evt_handle_rc_ie_rcv(struct uwb_event *); extern int uwbd_evt_handle_rc_beacon(struct uwb_event *); extern int uwbd_evt_handle_rc_beacon_size(struct uwb_event *); extern int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *); @@ -193,15 +194,6 @@ int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt); extern unsigned long beacon_timeout_ms; -/** Beacon cache list */ -struct uwb_beca { - struct list_head list; - size_t entries; - struct mutex mutex; -}; - -extern struct uwb_beca uwb_beca; - /** * Beacon cache entry * @@ -228,9 +220,6 @@ struct uwb_beca_e { struct uwb_beacon_frame; extern ssize_t uwb_bce_print_IEs(struct uwb_dev *, struct uwb_beca_e *, char *, size_t); -extern struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *, - struct uwb_beacon_frame *, - unsigned long); extern void uwb_bce_kfree(struct kref *_bce); static inline void uwb_bce_get(struct uwb_beca_e *bce) @@ -241,14 +230,19 @@ static inline void uwb_bce_put(struct uwb_beca_e *bce) { kref_put(&bce->refcnt, uwb_bce_kfree); } -extern void uwb_beca_purge(void); -extern void uwb_beca_release(void); +extern void uwb_beca_purge(struct uwb_rc *rc); +extern void uwb_beca_release(struct uwb_rc *rc); struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc, const struct uwb_dev_addr *devaddr); struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc, const struct uwb_mac_addr *macaddr); +int uwb_radio_setup(struct uwb_rc *rc); +void uwb_radio_reset_state(struct uwb_rc *rc); +void uwb_radio_shutdown(struct uwb_rc *rc); +int uwb_radio_force_channel(struct uwb_rc *rc, int channel); + /* -- UWB Sysfs representation */ extern struct class uwb_rc_class; extern struct device_attribute dev_attr_mac_address; @@ -259,6 +253,7 @@ extern struct device_attribute dev_attr_scan; void uwb_rsv_init(struct uwb_rc *rc); int uwb_rsv_setup(struct uwb_rc *rc); void uwb_rsv_cleanup(struct uwb_rc *rc); +void uwb_rsv_remove_all(struct uwb_rc *rc); void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state); void uwb_rsv_remove(struct uwb_rsv *rsv); diff --git a/drivers/uwb/uwbd.c b/drivers/uwb/uwbd.c index 78908416e42..ec42ce92dbc 100644 --- a/drivers/uwb/uwbd.c +++ b/drivers/uwb/uwbd.c @@ -104,6 +104,10 @@ struct uwbd_event { /** Table of handlers for and properties of the UWBD Radio Control Events */ static struct uwbd_event uwbd_events[] = { + [UWB_RC_EVT_IE_RCV] = { + .handler = uwbd_evt_handle_rc_ie_rcv, + .name = "IE_RECEIVED" + }, [UWB_RC_EVT_BEACON] = { .handler = uwbd_evt_handle_rc_beacon, .name = "BEACON_RECEIVED" @@ -166,8 +170,6 @@ static const struct uwbd_event uwbd_message_handlers[] = { }, }; -static DEFINE_MUTEX(uwbd_event_mutex); - /** * Handle an URC event passed to the UWB Daemon * @@ -231,19 +233,10 @@ static void uwbd_event_handle_message(struct uwb_event *evt) return; } - /* If this is a reset event we need to drop the - * uwbd_event_mutex or it deadlocks when the reset handler - * attempts to flush the uwbd events. */ - if (evt->message == UWB_EVT_MSG_RESET) - mutex_unlock(&uwbd_event_mutex); - result = uwbd_message_handlers[evt->message].handler(evt); if (result < 0) dev_err(&rc->uwb_dev.dev, "UWBD: '%s' message failed: %d\n", uwbd_message_handlers[evt->message].name, result); - - if (evt->message == UWB_EVT_MSG_RESET) - mutex_lock(&uwbd_event_mutex); } static void uwbd_event_handle(struct uwb_event *evt) @@ -271,20 +264,6 @@ static void uwbd_event_handle(struct uwb_event *evt) __uwb_rc_put(rc); /* for the __uwb_rc_get() in uwb_rc_notif_cb() */ } -/* The UWB Daemon */ - - -/** Daemon's PID: used to decide if we can queue or not */ -static int uwbd_pid; -/** Daemon's task struct for managing the kthread */ -static struct task_struct *uwbd_task; -/** Daemon's waitqueue for waiting for new events */ -static DECLARE_WAIT_QUEUE_HEAD(uwbd_wq); -/** Daemon's list of events; we queue/dequeue here */ -static struct list_head uwbd_event_list = LIST_HEAD_INIT(uwbd_event_list); -/** Daemon's list lock to protect concurent access */ -static DEFINE_SPINLOCK(uwbd_event_list_lock); - /** * UWB Daemon @@ -298,65 +277,58 @@ static DEFINE_SPINLOCK(uwbd_event_list_lock); * FIXME: should change so we don't have a 1HZ timer all the time, but * only if there are devices. */ -static int uwbd(void *unused) +static int uwbd(void *param) { + struct uwb_rc *rc = param; unsigned long flags; - struct list_head list = LIST_HEAD_INIT(list); - struct uwb_event *evt, *nxt; + struct uwb_event *evt; int should_stop = 0; + while (1) { wait_event_interruptible_timeout( - uwbd_wq, - !list_empty(&uwbd_event_list) + rc->uwbd.wq, + !list_empty(&rc->uwbd.event_list) || (should_stop = kthread_should_stop()), HZ); if (should_stop) break; try_to_freeze(); - mutex_lock(&uwbd_event_mutex); - spin_lock_irqsave(&uwbd_event_list_lock, flags); - list_splice_init(&uwbd_event_list, &list); - spin_unlock_irqrestore(&uwbd_event_list_lock, flags); - list_for_each_entry_safe(evt, nxt, &list, list_node) { + spin_lock_irqsave(&rc->uwbd.event_list_lock, flags); + if (!list_empty(&rc->uwbd.event_list)) { + evt = list_first_entry(&rc->uwbd.event_list, struct uwb_event, list_node); list_del(&evt->list_node); + } else + evt = NULL; + spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags); + + if (evt) { uwbd_event_handle(evt); kfree(evt); } - mutex_unlock(&uwbd_event_mutex); - uwb_beca_purge(); /* Purge devices that left */ + uwb_beca_purge(rc); /* Purge devices that left */ } return 0; } /** Start the UWB daemon */ -void uwbd_start(void) +void uwbd_start(struct uwb_rc *rc) { - uwbd_task = kthread_run(uwbd, NULL, "uwbd"); - if (uwbd_task == NULL) + rc->uwbd.task = kthread_run(uwbd, rc, "uwbd"); + if (rc->uwbd.task == NULL) printk(KERN_ERR "UWB: Cannot start management daemon; " "UWB won't work\n"); else - uwbd_pid = uwbd_task->pid; + rc->uwbd.pid = rc->uwbd.task->pid; } /* Stop the UWB daemon and free any unprocessed events */ -void uwbd_stop(void) +void uwbd_stop(struct uwb_rc *rc) { - unsigned long flags; - struct uwb_event *evt, *nxt; - kthread_stop(uwbd_task); - spin_lock_irqsave(&uwbd_event_list_lock, flags); - uwbd_pid = 0; - list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) { - if (evt->type == UWB_EVT_TYPE_NOTIF) - kfree(evt->notif.rceb); - kfree(evt); - } - spin_unlock_irqrestore(&uwbd_event_list_lock, flags); - uwb_beca_release(); + kthread_stop(rc->uwbd.task); + uwbd_flush(rc); } /* @@ -373,18 +345,20 @@ void uwbd_stop(void) */ void uwbd_event_queue(struct uwb_event *evt) { + struct uwb_rc *rc = evt->rc; unsigned long flags; - spin_lock_irqsave(&uwbd_event_list_lock, flags); - if (uwbd_pid != 0) { - list_add(&evt->list_node, &uwbd_event_list); - wake_up_all(&uwbd_wq); + + spin_lock_irqsave(&rc->uwbd.event_list_lock, flags); + if (rc->uwbd.pid != 0) { + list_add(&evt->list_node, &rc->uwbd.event_list); + wake_up_all(&rc->uwbd.wq); } else { __uwb_rc_put(evt->rc); if (evt->type == UWB_EVT_TYPE_NOTIF) kfree(evt->notif.rceb); kfree(evt); } - spin_unlock_irqrestore(&uwbd_event_list_lock, flags); + spin_unlock_irqrestore(&rc->uwbd.event_list_lock, flags); return; } @@ -392,10 +366,8 @@ void uwbd_flush(struct uwb_rc *rc) { struct uwb_event *evt, *nxt; - mutex_lock(&uwbd_event_mutex); - - spin_lock_irq(&uwbd_event_list_lock); - list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) { + spin_lock_irq(&rc->uwbd.event_list_lock); + list_for_each_entry_safe(evt, nxt, &rc->uwbd.event_list, list_node) { if (evt->rc == rc) { __uwb_rc_put(rc); list_del(&evt->list_node); @@ -404,7 +376,5 @@ void uwbd_flush(struct uwb_rc *rc) kfree(evt); } } - spin_unlock_irq(&uwbd_event_list_lock); - - mutex_unlock(&uwbd_event_mutex); + spin_unlock_irq(&rc->uwbd.event_list_lock); } diff --git a/drivers/uwb/whc-rc.c b/drivers/uwb/whc-rc.c index 1711deadb11..e0d66938ccd 100644 --- a/drivers/uwb/whc-rc.c +++ b/drivers/uwb/whc-rc.c @@ -39,7 +39,6 @@ * them to the hw and transfer the replies/notifications back to the * UWB stack through the UWB daemon (UWBD). */ -#include <linux/version.h> #include <linux/init.h> #include <linux/module.h> #include <linux/pci.h> @@ -395,7 +394,7 @@ void whcrc_stop_rc(struct uwb_rc *rc) le_writel(0, whcrc->rc_base + URCCMD); whci_wait_for(&umc_dev->dev, whcrc->rc_base + URCSTS, - URCSTS_HALTED, 0, 40, "URCSTS.HALTED"); + URCSTS_HALTED, URCSTS_HALTED, 100, "URCSTS.HALTED"); } static void whcrc_init(struct whcrc *whcrc) @@ -489,6 +488,24 @@ static void whcrc_remove(struct umc_dev *umc_dev) d_printf(1, &umc_dev->dev, "freed whcrc %p\n", whcrc); } +static int whcrc_pre_reset(struct umc_dev *umc) +{ + struct whcrc *whcrc = umc_get_drvdata(umc); + struct uwb_rc *uwb_rc = whcrc->uwb_rc; + + uwb_rc_pre_reset(uwb_rc); + return 0; +} + +static int whcrc_post_reset(struct umc_dev *umc) +{ + struct whcrc *whcrc = umc_get_drvdata(umc); + struct uwb_rc *uwb_rc = whcrc->uwb_rc; + + uwb_rc_post_reset(uwb_rc); + return 0; +} + /* PCI device ID's that we handle [so it gets loaded] */ static struct pci_device_id whcrc_id_table[] = { { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) }, @@ -497,10 +514,12 @@ static struct pci_device_id whcrc_id_table[] = { MODULE_DEVICE_TABLE(pci, whcrc_id_table); static struct umc_driver whcrc_driver = { - .name = "whc-rc", - .cap_id = UMC_CAP_ID_WHCI_RC, - .probe = whcrc_probe, - .remove = whcrc_remove, + .name = "whc-rc", + .cap_id = UMC_CAP_ID_WHCI_RC, + .probe = whcrc_probe, + .remove = whcrc_remove, + .pre_reset = whcrc_pre_reset, + .post_reset = whcrc_post_reset, }; static int __init whcrc_driver_init(void) diff --git a/drivers/uwb/whci.c b/drivers/uwb/whci.c index 3df2388f908..e626467f95e 100644 --- a/drivers/uwb/whci.c +++ b/drivers/uwb/whci.c @@ -111,7 +111,7 @@ static int whci_add_cap(struct whci_card *card, int n) + UWBCAPDATA_TO_OFFSET(capdata); umc->resource.end = umc->resource.start + (n == 0 ? 0x20 : UWBCAPDATA_TO_SIZE(capdata)) - 1; - umc->resource.name = umc->dev.bus_id; + umc->resource.name = dev_name(&umc->dev); umc->resource.flags = card->pci->resource[bar].flags; umc->resource.parent = &card->pci->resource[bar]; umc->irq = card->pci->irq; diff --git a/drivers/uwb/wlp/wlp-internal.h b/drivers/uwb/wlp/wlp-internal.h index 1c94fabfb1a..3e8d5de7c5b 100644 --- a/drivers/uwb/wlp/wlp-internal.h +++ b/drivers/uwb/wlp/wlp-internal.h @@ -42,10 +42,6 @@ enum wlp_wss_connect { extern struct kobj_type wss_ktype; extern struct attribute_group wss_attr_group; -extern int uwb_rc_ie_add(struct uwb_rc *, const struct uwb_ie_hdr *, size_t); -extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie); - - /* This should be changed to a dynamic array where entries are sorted * by eth_addr and search is done in a binary form * diff --git a/drivers/uwb/wlp/wlp-lc.c b/drivers/uwb/wlp/wlp-lc.c index 0799402e73f..e531093c416 100644 --- a/drivers/uwb/wlp/wlp-lc.c +++ b/drivers/uwb/wlp/wlp-lc.c @@ -526,7 +526,17 @@ void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev, } } -int wlp_setup(struct wlp *wlp, struct uwb_rc *rc) +static void wlp_channel_changed(struct uwb_pal *pal, int channel) +{ + struct wlp *wlp = container_of(pal, struct wlp, pal); + + if (channel < 0) + netif_carrier_off(wlp->ndev); + else + netif_carrier_on(wlp->ndev); +} + +int wlp_setup(struct wlp *wlp, struct uwb_rc *rc, struct net_device *ndev) { struct device *dev = &rc->uwb_dev.dev; int result; @@ -537,13 +547,16 @@ int wlp_setup(struct wlp *wlp, struct uwb_rc *rc) BUG_ON(wlp->stop_queue == NULL); BUG_ON(wlp->start_queue == NULL); wlp->rc = rc; + wlp->ndev = ndev; wlp_eda_init(&wlp->eda);/* Set up address cache */ wlp->uwb_notifs_handler.cb = wlp_uwb_notifs_cb; wlp->uwb_notifs_handler.data = wlp; uwb_notifs_register(rc, &wlp->uwb_notifs_handler); uwb_pal_init(&wlp->pal); - result = uwb_pal_register(rc, &wlp->pal); + wlp->pal.rc = rc; + wlp->pal.channel_changed = wlp_channel_changed; + result = uwb_pal_register(&wlp->pal); if (result < 0) uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler); @@ -557,7 +570,7 @@ void wlp_remove(struct wlp *wlp) struct device *dev = &wlp->rc->uwb_dev.dev; d_fnstart(6, dev, "wlp %p\n", wlp); wlp_neighbors_release(wlp); - uwb_pal_unregister(wlp->rc, &wlp->pal); + uwb_pal_unregister(&wlp->pal); uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler); wlp_eda_release(&wlp->eda); mutex_lock(&wlp->mutex); diff --git a/include/linux/usb/wusb-wa.h b/include/linux/usb/wusb-wa.h index a102561e702..fb7c359bdfb 100644 --- a/include/linux/usb/wusb-wa.h +++ b/include/linux/usb/wusb-wa.h @@ -51,6 +51,7 @@ enum { WUSB_REQ_GET_TIME = 25, WUSB_REQ_SET_STREAM_IDX = 26, WUSB_REQ_SET_WUSB_MAS = 27, + WUSB_REQ_CHAN_STOP = 28, }; diff --git a/include/linux/uwb.h b/include/linux/uwb.h index f9ccbd9a2ce..1719709d60c 100644 --- a/include/linux/uwb.h +++ b/include/linux/uwb.h @@ -30,6 +30,7 @@ #include <linux/device.h> #include <linux/mutex.h> #include <linux/timer.h> +#include <linux/wait.h> #include <linux/workqueue.h> #include <linux/uwb/spec.h> @@ -86,6 +87,22 @@ struct uwb_notifs_chain { struct mutex mutex; }; +/* Beacon cache list */ +struct uwb_beca { + struct list_head list; + size_t entries; + struct mutex mutex; +}; + +/* Event handling thread. */ +struct uwbd { + int pid; + struct task_struct *task; + wait_queue_head_t wq; + struct list_head event_list; + spinlock_t event_list_lock; +}; + /** * struct uwb_mas_bm - a bitmap of all MAS in a superframe * @bm: a bitmap of length #UWB_NUM_MAS @@ -201,6 +218,7 @@ struct uwb_rsv { struct uwb_rc *rc; struct list_head rc_node; struct list_head pal_node; + struct kref kref; struct uwb_dev *owner; struct uwb_rsv_target target; @@ -337,10 +355,14 @@ struct uwb_rc { u8 ctx_roll; int beaconing; /* Beaconing state [channel number] */ + int beaconing_forced; int scanning; enum uwb_scan_type scan_type:3; unsigned ready:1; struct uwb_notifs_chain notifs_chain; + struct uwb_beca uwb_beca; + + struct uwbd uwbd; struct uwb_drp_avail drp_avail; struct list_head reservations; @@ -352,8 +374,8 @@ struct uwb_rc { struct uwb_rc_cmd_set_ie *ies; size_t ies_capacity; - spinlock_t pal_lock; struct list_head pals; + int active_pals; struct uwb_dbg *dbg; }; @@ -361,11 +383,17 @@ struct uwb_rc { /** * struct uwb_pal - a UWB PAL - * @name: descriptive name for this PAL (wushc, wlp, etc.). + * @name: descriptive name for this PAL (wusbhc, wlp, etc.). * @device: a device for the PAL. Used to link the PAL and the radio * controller in sysfs. + * @rc: the radio controller the PAL uses. + * @channel_changed: called when the channel used by the radio changes. + * A channel of -1 means the channel has been stopped. * @new_rsv: called when a peer requests a reservation (may be NULL if * the PAL cannot accept reservation requests). + * @channel: channel being used by the PAL; 0 if the PAL isn't using + * the radio; -1 if the PAL wishes to use the radio but + * cannot. * * A Protocol Adaptation Layer (PAL) is a user of the WiMedia UWB * radio platform (e.g., WUSB, WLP or Bluetooth UWB AMP). @@ -384,12 +412,20 @@ struct uwb_pal { struct list_head node; const char *name; struct device *device; - void (*new_rsv)(struct uwb_rsv *rsv); + struct uwb_rc *rc; + + void (*channel_changed)(struct uwb_pal *pal, int channel); + void (*new_rsv)(struct uwb_pal *pal, struct uwb_rsv *rsv); + + int channel; }; void uwb_pal_init(struct uwb_pal *pal); -int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal); -void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal); +int uwb_pal_register(struct uwb_pal *pal); +void uwb_pal_unregister(struct uwb_pal *pal); + +int uwb_radio_start(struct uwb_pal *pal); +void uwb_radio_stop(struct uwb_pal *pal); /* * General public API @@ -443,8 +479,6 @@ ssize_t uwb_rc_vcmd(struct uwb_rc *rc, const char *cmd_name, struct uwb_rccb *cmd, size_t cmd_size, u8 expected_type, u16 expected_event, struct uwb_rceb **preply); -ssize_t uwb_rc_get_ie(struct uwb_rc *, struct uwb_rc_evt_get_ie **); -int uwb_bg_joined(struct uwb_rc *rc); size_t __uwb_addr_print(char *, size_t, const unsigned char *, int); @@ -520,6 +554,8 @@ void uwb_rc_rm(struct uwb_rc *); void uwb_rc_neh_grok(struct uwb_rc *, void *, size_t); void uwb_rc_neh_error(struct uwb_rc *, int); void uwb_rc_reset_all(struct uwb_rc *rc); +void uwb_rc_pre_reset(struct uwb_rc *rc); +void uwb_rc_post_reset(struct uwb_rc *rc); /** * uwb_rsv_is_owner - is the owner of this reservation the RC? @@ -531,7 +567,9 @@ static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv) } /** - * Events generated by UWB that can be passed to any listeners + * enum uwb_notifs - UWB events that can be passed to any listeners + * @UWB_NOTIF_ONAIR: a new neighbour has joined the beacon group. + * @UWB_NOTIF_OFFAIR: a neighbour has left the beacon group. * * Higher layers can register callback functions with the radio * controller using uwb_notifs_register(). The radio controller @@ -539,8 +577,6 @@ static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv) * nodes when an event occurs. */ enum uwb_notifs { - UWB_NOTIF_BG_JOIN = 0, /* radio controller joined a beacon group */ - UWB_NOTIF_BG_LEAVE = 1, /* radio controller left a beacon group */ UWB_NOTIF_ONAIR, UWB_NOTIF_OFFAIR, }; @@ -652,22 +688,9 @@ static inline int edc_inc(struct edc *err_hist, u16 max_err, u16 timeframe) /* Information Element handling */ -/* For representing the state of writing to a buffer when iterating */ -struct uwb_buf_ctx { - char *buf; - size_t bytes, size; -}; - -typedef int (*uwb_ie_f)(struct uwb_dev *, const struct uwb_ie_hdr *, - size_t, void *); -struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len); -ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data, - const void *buf, size_t size); -int uwb_ie_dump_hex(struct uwb_dev *, const struct uwb_ie_hdr *, - size_t, void *); -int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *); struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len); - +int uwb_rc_ie_add(struct uwb_rc *uwb_rc, const struct uwb_ie_hdr *ies, size_t size); +int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id); /* * Transmission statistics diff --git a/include/linux/uwb/debug-cmd.h b/include/linux/uwb/debug-cmd.h index 1141f41bab5..07efbe17db5 100644 --- a/include/linux/uwb/debug-cmd.h +++ b/include/linux/uwb/debug-cmd.h @@ -32,6 +32,10 @@ enum uwb_dbg_cmd_type { UWB_DBG_CMD_RSV_ESTABLISH = 1, UWB_DBG_CMD_RSV_TERMINATE = 2, + UWB_DBG_CMD_IE_ADD = 3, + UWB_DBG_CMD_IE_RM = 4, + UWB_DBG_CMD_RADIO_START = 5, + UWB_DBG_CMD_RADIO_STOP = 6, }; struct uwb_dbg_cmd_rsv_establish { @@ -46,11 +50,18 @@ struct uwb_dbg_cmd_rsv_terminate { int index; }; +struct uwb_dbg_cmd_ie { + __u8 data[128]; + int len; +}; + struct uwb_dbg_cmd { __u32 type; union { struct uwb_dbg_cmd_rsv_establish rsv_establish; struct uwb_dbg_cmd_rsv_terminate rsv_terminate; + struct uwb_dbg_cmd_ie ie_add; + struct uwb_dbg_cmd_ie ie_rm; }; }; diff --git a/include/linux/uwb/debug.h b/include/linux/uwb/debug.h index a86a73fe303..67a24052714 100644 --- a/include/linux/uwb/debug.h +++ b/include/linux/uwb/debug.h @@ -60,7 +60,7 @@ do { \ snprintf(__head, sizeof(__head), \ "%s %s: ", \ dev_driver_string(__dev), \ - __dev->bus_id); \ + dev_name(__dev)); \ } \ printk(KERN_ERR "%s%s" _tag ": " f, __head, \ __func__, ## a); \ diff --git a/include/linux/uwb/spec.h b/include/linux/uwb/spec.h index 198c15f8e25..a30436ea53a 100644 --- a/include/linux/uwb/spec.h +++ b/include/linux/uwb/spec.h @@ -200,6 +200,12 @@ enum uwb_drp_reason { UWB_DRP_REASON_MODIFIED, }; +/** Relinquish Request Reason Codes ([ECMA-368] table 113) */ +enum uwb_relinquish_req_reason { + UWB_RELINQUISH_REQ_REASON_NON_SPECIFIC = 0, + UWB_RELINQUISH_REQ_REASON_OVER_ALLOCATION, +}; + /** * DRP Notification Reason Codes (WHCI 0.95 [3.1.4.9]) */ @@ -252,6 +258,7 @@ enum uwb_ie { UWB_APP_SPEC_PROBE_IE = 15, UWB_IDENTIFICATION_IE = 19, UWB_MASTER_KEY_ID_IE = 20, + UWB_RELINQUISH_REQUEST_IE = 21, UWB_IE_WLP = 250, /* WiMedia Logical Link Control Protocol WLP 0.99 */ UWB_APP_SPEC_IE = 255, }; @@ -365,6 +372,27 @@ struct uwb_ie_drp_avail { DECLARE_BITMAP(bmp, UWB_NUM_MAS); } __attribute__((packed)); +/* Relinqish Request IE ([ECMA-368] section 16.8.19). */ +struct uwb_relinquish_request_ie { + struct uwb_ie_hdr hdr; + __le16 relinquish_req_control; + struct uwb_dev_addr dev_addr; + struct uwb_drp_alloc allocs[]; +} __attribute__((packed)); + +static inline int uwb_ie_relinquish_req_reason_code(struct uwb_relinquish_request_ie *ie) +{ + return (le16_to_cpu(ie->relinquish_req_control) >> 0) & 0xf; +} + +static inline void uwb_ie_relinquish_req_set_reason_code(struct uwb_relinquish_request_ie *ie, + int reason_code) +{ + u16 ctrl = le16_to_cpu(ie->relinquish_req_control); + ctrl = (ctrl & ~(0xf << 0)) | (reason_code << 0); + ie->relinquish_req_control = cpu_to_le16(ctrl); +} + /** * The Vendor ID is set to an OUI that indicates the vendor of the device. * ECMA-368 [16.8.10] diff --git a/include/linux/uwb/umc.h b/include/linux/uwb/umc.h index 36a39e34f8d..4b4fc0f4385 100644 --- a/include/linux/uwb/umc.h +++ b/include/linux/uwb/umc.h @@ -89,6 +89,8 @@ struct umc_driver { void (*remove)(struct umc_dev *); int (*suspend)(struct umc_dev *, pm_message_t state); int (*resume)(struct umc_dev *); + int (*pre_reset)(struct umc_dev *); + int (*post_reset)(struct umc_dev *); struct device_driver driver; }; diff --git a/include/linux/wlp.h b/include/linux/wlp.h index 033545e145c..ac95ce6606a 100644 --- a/include/linux/wlp.h +++ b/include/linux/wlp.h @@ -646,6 +646,7 @@ struct wlp_wss { struct wlp { struct mutex mutex; struct uwb_rc *rc; /* UWB radio controller */ + struct net_device *ndev; struct uwb_pal pal; struct wlp_eda eda; struct wlp_uuid uuid; @@ -675,7 +676,7 @@ struct wlp_wss_attribute { static struct wlp_wss_attribute wss_attr_##_name = __ATTR(_name, _mode, \ _show, _store) -extern int wlp_setup(struct wlp *, struct uwb_rc *); +extern int wlp_setup(struct wlp *, struct uwb_rc *, struct net_device *ndev); extern void wlp_remove(struct wlp *); extern ssize_t wlp_neighborhood_show(struct wlp *, char *); extern int wlp_wss_setup(struct net_device *, struct wlp_wss *); |