diff options
Diffstat (limited to 'drivers/staging/wlan-ng/hfa384x_usb.c')
| -rw-r--r-- | drivers/staging/wlan-ng/hfa384x_usb.c | 4127 |
1 files changed, 4127 insertions, 0 deletions
diff --git a/drivers/staging/wlan-ng/hfa384x_usb.c b/drivers/staging/wlan-ng/hfa384x_usb.c new file mode 100644 index 000000000..e109a7fd4 --- /dev/null +++ b/drivers/staging/wlan-ng/hfa384x_usb.c @@ -0,0 +1,4127 @@ +/* src/prism2/driver/hfa384x_usb.c +* +* Functions that talk to the USB variantof the Intersil hfa384x MAC +* +* Copyright (C) 1999 AbsoluteValue Systems, Inc. All Rights Reserved. +* -------------------------------------------------------------------- +* +* linux-wlan +* +* The contents of this file are subject to the Mozilla Public +* License Version 1.1 (the "License"); you may not use this file +* except in compliance with the License. You may obtain a copy of +* the License at http://www.mozilla.org/MPL/ +* +* Software distributed under the License is distributed on an "AS +* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +* implied. See the License for the specific language governing +* rights and limitations under the License. +* +* Alternatively, the contents of this file may be used under the +* terms of the GNU Public License version 2 (the "GPL"), in which +* case the provisions of the GPL are applicable instead of the +* above. If you wish to allow the use of your version of this file +* only under the terms of the GPL and not to allow others to use +* your version of this file under the MPL, indicate your decision +* by deleting the provisions above and replace them with the notice +* and other provisions required by the GPL. If you do not delete +* the provisions above, a recipient may use your version of this +* file under either the MPL or the GPL. +* +* -------------------------------------------------------------------- +* +* Inquiries regarding the linux-wlan Open Source project can be +* made directly to: +* +* AbsoluteValue Systems Inc. +* info@linux-wlan.com +* http://www.linux-wlan.com +* +* -------------------------------------------------------------------- +* +* Portions of the development of this software were funded by +* Intersil Corporation as part of PRISM(R) chipset product development. +* +* -------------------------------------------------------------------- +* +* This file implements functions that correspond to the prism2/hfa384x +* 802.11 MAC hardware and firmware host interface. +* +* The functions can be considered to represent several levels of +* abstraction. The lowest level functions are simply C-callable wrappers +* around the register accesses. The next higher level represents C-callable +* prism2 API functions that match the Intersil documentation as closely +* as is reasonable. The next higher layer implements common sequences +* of invocations of the API layer (e.g. write to bap, followed by cmd). +* +* Common sequences: +* hfa384x_drvr_xxx Highest level abstractions provided by the +* hfa384x code. They are driver defined wrappers +* for common sequences. These functions generally +* use the services of the lower levels. +* +* hfa384x_drvr_xxxconfig An example of the drvr level abstraction. These +* functions are wrappers for the RID get/set +* sequence. They call copy_[to|from]_bap() and +* cmd_access(). These functions operate on the +* RIDs and buffers without validation. The caller +* is responsible for that. +* +* API wrapper functions: +* hfa384x_cmd_xxx functions that provide access to the f/w commands. +* The function arguments correspond to each command +* argument, even command arguments that get packed +* into single registers. These functions _just_ +* issue the command by setting the cmd/parm regs +* & reading the status/resp regs. Additional +* activities required to fully use a command +* (read/write from/to bap, get/set int status etc.) +* are implemented separately. Think of these as +* C-callable prism2 commands. +* +* Lowest Layer Functions: +* hfa384x_docmd_xxx These functions implement the sequence required +* to issue any prism2 command. Primarily used by the +* hfa384x_cmd_xxx functions. +* +* hfa384x_bap_xxx BAP read/write access functions. +* Note: we usually use BAP0 for non-interrupt context +* and BAP1 for interrupt context. +* +* hfa384x_dl_xxx download related functions. +* +* Driver State Issues: +* Note that there are two pairs of functions that manage the +* 'initialized' and 'running' states of the hw/MAC combo. The four +* functions are create(), destroy(), start(), and stop(). create() +* sets up the data structures required to support the hfa384x_* +* functions and destroy() cleans them up. The start() function gets +* the actual hardware running and enables the interrupts. The stop() +* function shuts the hardware down. The sequence should be: +* create() +* start() +* . +* . Do interesting things w/ the hardware +* . +* stop() +* destroy() +* +* Note that destroy() can be called without calling stop() first. +* -------------------------------------------------------------------- +*/ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <linux/slab.h> +#include <linux/wireless.h> +#include <linux/netdevice.h> +#include <linux/timer.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <asm/byteorder.h> +#include <linux/bitops.h> +#include <linux/list.h> +#include <linux/usb.h> +#include <linux/byteorder/generic.h> + +#define SUBMIT_URB(u, f) usb_submit_urb(u, f) + +#include "p80211types.h" +#include "p80211hdr.h" +#include "p80211mgmt.h" +#include "p80211conv.h" +#include "p80211msg.h" +#include "p80211netdev.h" +#include "p80211req.h" +#include "p80211metadef.h" +#include "p80211metastruct.h" +#include "hfa384x.h" +#include "prism2mgmt.h" + +enum cmd_mode { + DOWAIT = 0, + DOASYNC +}; + +#define THROTTLE_JIFFIES (HZ/8) +#define URB_ASYNC_UNLINK 0 +#define USB_QUEUE_BULK 0 + +#define ROUNDUP64(a) (((a)+63)&~63) + +#ifdef DEBUG_USB +static void dbprint_urb(struct urb *urb); +#endif + +static void +hfa384x_int_rxmonitor(wlandevice_t *wlandev, hfa384x_usb_rxfrm_t *rxfrm); + +static void hfa384x_usb_defer(struct work_struct *data); + +static int submit_rx_urb(hfa384x_t *hw, gfp_t flags); + +static int submit_tx_urb(hfa384x_t *hw, struct urb *tx_urb, gfp_t flags); + +/*---------------------------------------------------*/ +/* Callbacks */ +static void hfa384x_usbout_callback(struct urb *urb); +static void hfa384x_ctlxout_callback(struct urb *urb); +static void hfa384x_usbin_callback(struct urb *urb); + +static void +hfa384x_usbin_txcompl(wlandevice_t *wlandev, hfa384x_usbin_t *usbin); + +static void hfa384x_usbin_rx(wlandevice_t *wlandev, struct sk_buff *skb); + +static void hfa384x_usbin_info(wlandevice_t *wlandev, hfa384x_usbin_t *usbin); + +static void +hfa384x_usbout_tx(wlandevice_t *wlandev, hfa384x_usbout_t *usbout); + +static void hfa384x_usbin_ctlx(hfa384x_t *hw, hfa384x_usbin_t *usbin, + int urb_status); + +/*---------------------------------------------------*/ +/* Functions to support the prism2 usb command queue */ + +static void hfa384x_usbctlxq_run(hfa384x_t *hw); + +static void hfa384x_usbctlx_reqtimerfn(unsigned long data); + +static void hfa384x_usbctlx_resptimerfn(unsigned long data); + +static void hfa384x_usb_throttlefn(unsigned long data); + +static void hfa384x_usbctlx_completion_task(unsigned long data); + +static void hfa384x_usbctlx_reaper_task(unsigned long data); + +static int hfa384x_usbctlx_submit(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx); + +static void unlocked_usbctlx_complete(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx); + +struct usbctlx_completor { + int (*complete)(struct usbctlx_completor *); +}; + +static int +hfa384x_usbctlx_complete_sync(hfa384x_t *hw, + hfa384x_usbctlx_t *ctlx, + struct usbctlx_completor *completor); + +static int +unlocked_usbctlx_cancel_async(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx); + +static void hfa384x_cb_status(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx); + +static void hfa384x_cb_rrid(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx); + +static int +usbctlx_get_status(const hfa384x_usb_cmdresp_t *cmdresp, + hfa384x_cmdresult_t *result); + +static void +usbctlx_get_rridresult(const hfa384x_usb_rridresp_t *rridresp, + hfa384x_rridresult_t *result); + +/*---------------------------------------------------*/ +/* Low level req/resp CTLX formatters and submitters */ +static int +hfa384x_docmd(hfa384x_t *hw, + enum cmd_mode mode, + hfa384x_metacmd_t *cmd, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data); + +static int +hfa384x_dorrid(hfa384x_t *hw, + enum cmd_mode mode, + u16 rid, + void *riddata, + unsigned int riddatalen, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data); + +static int +hfa384x_dowrid(hfa384x_t *hw, + enum cmd_mode mode, + u16 rid, + void *riddata, + unsigned int riddatalen, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data); + +static int +hfa384x_dormem(hfa384x_t *hw, + enum cmd_mode mode, + u16 page, + u16 offset, + void *data, + unsigned int len, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data); + +static int +hfa384x_dowmem(hfa384x_t *hw, + enum cmd_mode mode, + u16 page, + u16 offset, + void *data, + unsigned int len, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data); + +static int hfa384x_isgood_pdrcode(u16 pdrcode); + +static inline const char *ctlxstr(CTLX_STATE s) +{ + static const char * const ctlx_str[] = { + "Initial state", + "Complete", + "Request failed", + "Request pending", + "Request packet submitted", + "Request packet completed", + "Response packet completed" + }; + + return ctlx_str[s]; +}; + +static inline hfa384x_usbctlx_t *get_active_ctlx(hfa384x_t *hw) +{ + return list_entry(hw->ctlxq.active.next, hfa384x_usbctlx_t, list); +} + +#ifdef DEBUG_USB +void dbprint_urb(struct urb *urb) +{ + pr_debug("urb->pipe=0x%08x\n", urb->pipe); + pr_debug("urb->status=0x%08x\n", urb->status); + pr_debug("urb->transfer_flags=0x%08x\n", urb->transfer_flags); + pr_debug("urb->transfer_buffer=0x%08x\n", + (unsigned int)urb->transfer_buffer); + pr_debug("urb->transfer_buffer_length=0x%08x\n", + urb->transfer_buffer_length); + pr_debug("urb->actual_length=0x%08x\n", urb->actual_length); + pr_debug("urb->bandwidth=0x%08x\n", urb->bandwidth); + pr_debug("urb->setup_packet(ctl)=0x%08x\n", + (unsigned int)urb->setup_packet); + pr_debug("urb->start_frame(iso/irq)=0x%08x\n", urb->start_frame); + pr_debug("urb->interval(irq)=0x%08x\n", urb->interval); + pr_debug("urb->error_count(iso)=0x%08x\n", urb->error_count); + pr_debug("urb->timeout=0x%08x\n", urb->timeout); + pr_debug("urb->context=0x%08x\n", (unsigned int)urb->context); + pr_debug("urb->complete=0x%08x\n", (unsigned int)urb->complete); +} +#endif + +/*---------------------------------------------------------------- +* submit_rx_urb +* +* Listen for input data on the BULK-IN pipe. If the pipe has +* stalled then schedule it to be reset. +* +* Arguments: +* hw device struct +* memflags memory allocation flags +* +* Returns: +* error code from submission +* +* Call context: +* Any +----------------------------------------------------------------*/ +static int submit_rx_urb(hfa384x_t *hw, gfp_t memflags) +{ + struct sk_buff *skb; + int result; + + skb = dev_alloc_skb(sizeof(hfa384x_usbin_t)); + if (skb == NULL) { + result = -ENOMEM; + goto done; + } + + /* Post the IN urb */ + usb_fill_bulk_urb(&hw->rx_urb, hw->usb, + hw->endp_in, + skb->data, sizeof(hfa384x_usbin_t), + hfa384x_usbin_callback, hw->wlandev); + + hw->rx_urb_skb = skb; + + result = -ENOLINK; + if (!hw->wlandev->hwremoved && + !test_bit(WORK_RX_HALT, &hw->usb_flags)) { + result = SUBMIT_URB(&hw->rx_urb, memflags); + + /* Check whether we need to reset the RX pipe */ + if (result == -EPIPE) { + netdev_warn(hw->wlandev->netdev, + "%s rx pipe stalled: requesting reset\n", + hw->wlandev->netdev->name); + if (!test_and_set_bit(WORK_RX_HALT, &hw->usb_flags)) + schedule_work(&hw->usb_work); + } + } + + /* Don't leak memory if anything should go wrong */ + if (result != 0) { + dev_kfree_skb(skb); + hw->rx_urb_skb = NULL; + } + +done: + return result; +} + +/*---------------------------------------------------------------- +* submit_tx_urb +* +* Prepares and submits the URB of transmitted data. If the +* submission fails then it will schedule the output pipe to +* be reset. +* +* Arguments: +* hw device struct +* tx_urb URB of data for transmission +* memflags memory allocation flags +* +* Returns: +* error code from submission +* +* Call context: +* Any +----------------------------------------------------------------*/ +static int submit_tx_urb(hfa384x_t *hw, struct urb *tx_urb, gfp_t memflags) +{ + struct net_device *netdev = hw->wlandev->netdev; + int result; + + result = -ENOLINK; + if (netif_running(netdev)) { + if (!hw->wlandev->hwremoved && + !test_bit(WORK_TX_HALT, &hw->usb_flags)) { + result = SUBMIT_URB(tx_urb, memflags); + + /* Test whether we need to reset the TX pipe */ + if (result == -EPIPE) { + netdev_warn(hw->wlandev->netdev, + "%s tx pipe stalled: requesting reset\n", + netdev->name); + set_bit(WORK_TX_HALT, &hw->usb_flags); + schedule_work(&hw->usb_work); + } else if (result == 0) { + netif_stop_queue(netdev); + } + } + } + + return result; +} + +/*---------------------------------------------------------------- +* hfa394x_usb_defer +* +* There are some things that the USB stack cannot do while +* in interrupt context, so we arrange this function to run +* in process context. +* +* Arguments: +* hw device structure +* +* Returns: +* nothing +* +* Call context: +* process (by design) +----------------------------------------------------------------*/ +static void hfa384x_usb_defer(struct work_struct *data) +{ + hfa384x_t *hw = container_of(data, struct hfa384x, usb_work); + struct net_device *netdev = hw->wlandev->netdev; + + /* Don't bother trying to reset anything if the plug + * has been pulled ... + */ + if (hw->wlandev->hwremoved) + return; + + /* Reception has stopped: try to reset the input pipe */ + if (test_bit(WORK_RX_HALT, &hw->usb_flags)) { + int ret; + + usb_kill_urb(&hw->rx_urb); /* Cannot be holding spinlock! */ + + ret = usb_clear_halt(hw->usb, hw->endp_in); + if (ret != 0) { + netdev_err(hw->wlandev->netdev, + "Failed to clear rx pipe for %s: err=%d\n", + netdev->name, ret); + } else { + netdev_info(hw->wlandev->netdev, "%s rx pipe reset complete.\n", + netdev->name); + clear_bit(WORK_RX_HALT, &hw->usb_flags); + set_bit(WORK_RX_RESUME, &hw->usb_flags); + } + } + + /* Resume receiving data back from the device. */ + if (test_bit(WORK_RX_RESUME, &hw->usb_flags)) { + int ret; + + ret = submit_rx_urb(hw, GFP_KERNEL); + if (ret != 0) { + netdev_err(hw->wlandev->netdev, + "Failed to resume %s rx pipe.\n", + netdev->name); + } else { + clear_bit(WORK_RX_RESUME, &hw->usb_flags); + } + } + + /* Transmission has stopped: try to reset the output pipe */ + if (test_bit(WORK_TX_HALT, &hw->usb_flags)) { + int ret; + + usb_kill_urb(&hw->tx_urb); + ret = usb_clear_halt(hw->usb, hw->endp_out); + if (ret != 0) { + netdev_err(hw->wlandev->netdev, + "Failed to clear tx pipe for %s: err=%d\n", + netdev->name, ret); + } else { + netdev_info(hw->wlandev->netdev, "%s tx pipe reset complete.\n", + netdev->name); + clear_bit(WORK_TX_HALT, &hw->usb_flags); + set_bit(WORK_TX_RESUME, &hw->usb_flags); + + /* Stopping the BULK-OUT pipe also blocked + * us from sending any more CTLX URBs, so + * we need to re-run our queue ... + */ + hfa384x_usbctlxq_run(hw); + } + } + + /* Resume transmitting. */ + if (test_and_clear_bit(WORK_TX_RESUME, &hw->usb_flags)) + netif_wake_queue(hw->wlandev->netdev); +} + +/*---------------------------------------------------------------- +* hfa384x_create +* +* Sets up the hfa384x_t data structure for use. Note this +* does _not_ initialize the actual hardware, just the data structures +* we use to keep track of its state. +* +* Arguments: +* hw device structure +* irq device irq number +* iobase i/o base address for register access +* membase memory base address for register access +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +void hfa384x_create(hfa384x_t *hw, struct usb_device *usb) +{ + memset(hw, 0, sizeof(hfa384x_t)); + hw->usb = usb; + + /* set up the endpoints */ + hw->endp_in = usb_rcvbulkpipe(usb, 1); + hw->endp_out = usb_sndbulkpipe(usb, 2); + + /* Set up the waitq */ + init_waitqueue_head(&hw->cmdq); + + /* Initialize the command queue */ + spin_lock_init(&hw->ctlxq.lock); + INIT_LIST_HEAD(&hw->ctlxq.pending); + INIT_LIST_HEAD(&hw->ctlxq.active); + INIT_LIST_HEAD(&hw->ctlxq.completing); + INIT_LIST_HEAD(&hw->ctlxq.reapable); + + /* Initialize the authentication queue */ + skb_queue_head_init(&hw->authq); + + tasklet_init(&hw->reaper_bh, + hfa384x_usbctlx_reaper_task, (unsigned long)hw); + tasklet_init(&hw->completion_bh, + hfa384x_usbctlx_completion_task, (unsigned long)hw); + INIT_WORK(&hw->link_bh, prism2sta_processing_defer); + INIT_WORK(&hw->usb_work, hfa384x_usb_defer); + + setup_timer(&hw->throttle, hfa384x_usb_throttlefn, (unsigned long)hw); + + setup_timer(&hw->resptimer, hfa384x_usbctlx_resptimerfn, + (unsigned long)hw); + + setup_timer(&hw->reqtimer, hfa384x_usbctlx_reqtimerfn, + (unsigned long)hw); + + usb_init_urb(&hw->rx_urb); + usb_init_urb(&hw->tx_urb); + usb_init_urb(&hw->ctlx_urb); + + hw->link_status = HFA384x_LINK_NOTCONNECTED; + hw->state = HFA384x_STATE_INIT; + + INIT_WORK(&hw->commsqual_bh, prism2sta_commsqual_defer); + setup_timer(&hw->commsqual_timer, prism2sta_commsqual_timer, + (unsigned long)hw); +} + +/*---------------------------------------------------------------- +* hfa384x_destroy +* +* Partner to hfa384x_create(). This function cleans up the hw +* structure so that it can be freed by the caller using a simple +* kfree. Currently, this function is just a placeholder. If, at some +* point in the future, an hw in the 'shutdown' state requires a 'deep' +* kfree, this is where it should be done. Note that if this function +* is called on a _running_ hw structure, the drvr_stop() function is +* called. +* +* Arguments: +* hw device structure +* +* Returns: +* nothing, this function is not allowed to fail. +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +void hfa384x_destroy(hfa384x_t *hw) +{ + struct sk_buff *skb; + + if (hw->state == HFA384x_STATE_RUNNING) + hfa384x_drvr_stop(hw); + hw->state = HFA384x_STATE_PREINIT; + + kfree(hw->scanresults); + hw->scanresults = NULL; + + /* Now to clean out the auth queue */ + while ((skb = skb_dequeue(&hw->authq))) + dev_kfree_skb(skb); +} + +static hfa384x_usbctlx_t *usbctlx_alloc(void) +{ + hfa384x_usbctlx_t *ctlx; + + ctlx = kzalloc(sizeof(*ctlx), + in_interrupt() ? GFP_ATOMIC : GFP_KERNEL); + if (ctlx != NULL) + init_completion(&ctlx->done); + + return ctlx; +} + +static int +usbctlx_get_status(const hfa384x_usb_cmdresp_t *cmdresp, + hfa384x_cmdresult_t *result) +{ + result->status = le16_to_cpu(cmdresp->status); + result->resp0 = le16_to_cpu(cmdresp->resp0); + result->resp1 = le16_to_cpu(cmdresp->resp1); + result->resp2 = le16_to_cpu(cmdresp->resp2); + + pr_debug("cmdresult:status=0x%04x resp0=0x%04x resp1=0x%04x resp2=0x%04x\n", + result->status, result->resp0, result->resp1, result->resp2); + + return result->status & HFA384x_STATUS_RESULT; +} + +static void +usbctlx_get_rridresult(const hfa384x_usb_rridresp_t *rridresp, + hfa384x_rridresult_t *result) +{ + result->rid = le16_to_cpu(rridresp->rid); + result->riddata = rridresp->data; + result->riddata_len = ((le16_to_cpu(rridresp->frmlen) - 1) * 2); +} + +/*---------------------------------------------------------------- +* Completor object: +* This completor must be passed to hfa384x_usbctlx_complete_sync() +* when processing a CTLX that returns a hfa384x_cmdresult_t structure. +----------------------------------------------------------------*/ +struct usbctlx_cmd_completor { + struct usbctlx_completor head; + + const hfa384x_usb_cmdresp_t *cmdresp; + hfa384x_cmdresult_t *result; +}; + +static inline int usbctlx_cmd_completor_fn(struct usbctlx_completor *head) +{ + struct usbctlx_cmd_completor *complete; + + complete = (struct usbctlx_cmd_completor *)head; + return usbctlx_get_status(complete->cmdresp, complete->result); +} + +static inline struct usbctlx_completor *init_cmd_completor( + struct usbctlx_cmd_completor + *completor, + const hfa384x_usb_cmdresp_t + *cmdresp, + hfa384x_cmdresult_t *result) +{ + completor->head.complete = usbctlx_cmd_completor_fn; + completor->cmdresp = cmdresp; + completor->result = result; + return &(completor->head); +} + +/*---------------------------------------------------------------- +* Completor object: +* This completor must be passed to hfa384x_usbctlx_complete_sync() +* when processing a CTLX that reads a RID. +----------------------------------------------------------------*/ +struct usbctlx_rrid_completor { + struct usbctlx_completor head; + + const hfa384x_usb_rridresp_t *rridresp; + void *riddata; + unsigned int riddatalen; +}; + +static int usbctlx_rrid_completor_fn(struct usbctlx_completor *head) +{ + struct usbctlx_rrid_completor *complete; + hfa384x_rridresult_t rridresult; + + complete = (struct usbctlx_rrid_completor *)head; + usbctlx_get_rridresult(complete->rridresp, &rridresult); + + /* Validate the length, note body len calculation in bytes */ + if (rridresult.riddata_len != complete->riddatalen) { + pr_warn("RID len mismatch, rid=0x%04x hlen=%d fwlen=%d\n", + rridresult.rid, + complete->riddatalen, rridresult.riddata_len); + return -ENODATA; + } + + memcpy(complete->riddata, rridresult.riddata, complete->riddatalen); + return 0; +} + +static inline struct usbctlx_completor *init_rrid_completor( + struct usbctlx_rrid_completor + *completor, + const hfa384x_usb_rridresp_t + *rridresp, + void *riddata, + unsigned int riddatalen) +{ + completor->head.complete = usbctlx_rrid_completor_fn; + completor->rridresp = rridresp; + completor->riddata = riddata; + completor->riddatalen = riddatalen; + return &(completor->head); +} + +/*---------------------------------------------------------------- +* Completor object: +* Interprets the results of a synchronous RID-write +----------------------------------------------------------------*/ +#define init_wrid_completor init_cmd_completor + +/*---------------------------------------------------------------- +* Completor object: +* Interprets the results of a synchronous memory-write +----------------------------------------------------------------*/ +#define init_wmem_completor init_cmd_completor + +/*---------------------------------------------------------------- +* Completor object: +* Interprets the results of a synchronous memory-read +----------------------------------------------------------------*/ +struct usbctlx_rmem_completor { + struct usbctlx_completor head; + + const hfa384x_usb_rmemresp_t *rmemresp; + void *data; + unsigned int len; +}; + +static int usbctlx_rmem_completor_fn(struct usbctlx_completor *head) +{ + struct usbctlx_rmem_completor *complete = + (struct usbctlx_rmem_completor *)head; + + pr_debug("rmemresp:len=%d\n", complete->rmemresp->frmlen); + memcpy(complete->data, complete->rmemresp->data, complete->len); + return 0; +} + +static inline struct usbctlx_completor *init_rmem_completor( + struct usbctlx_rmem_completor + *completor, + hfa384x_usb_rmemresp_t + *rmemresp, + void *data, + unsigned int len) +{ + completor->head.complete = usbctlx_rmem_completor_fn; + completor->rmemresp = rmemresp; + completor->data = data; + completor->len = len; + return &(completor->head); +} + +/*---------------------------------------------------------------- +* hfa384x_cb_status +* +* Ctlx_complete handler for async CMD type control exchanges. +* mark the hw struct as such. +* +* Note: If the handling is changed here, it should probably be +* changed in docmd as well. +* +* Arguments: +* hw hw struct +* ctlx completed CTLX +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_cb_status(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx) +{ + if (ctlx->usercb != NULL) { + hfa384x_cmdresult_t cmdresult; + + if (ctlx->state != CTLX_COMPLETE) { + memset(&cmdresult, 0, sizeof(cmdresult)); + cmdresult.status = + HFA384x_STATUS_RESULT_SET(HFA384x_CMD_ERR); + } else { + usbctlx_get_status(&ctlx->inbuf.cmdresp, &cmdresult); + } + + ctlx->usercb(hw, &cmdresult, ctlx->usercb_data); + } +} + +/*---------------------------------------------------------------- +* hfa384x_cb_rrid +* +* CTLX completion handler for async RRID type control exchanges. +* +* Note: If the handling is changed here, it should probably be +* changed in dorrid as well. +* +* Arguments: +* hw hw struct +* ctlx completed CTLX +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_cb_rrid(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx) +{ + if (ctlx->usercb != NULL) { + hfa384x_rridresult_t rridresult; + + if (ctlx->state != CTLX_COMPLETE) { + memset(&rridresult, 0, sizeof(rridresult)); + rridresult.rid = le16_to_cpu(ctlx->outbuf.rridreq.rid); + } else { + usbctlx_get_rridresult(&ctlx->inbuf.rridresp, + &rridresult); + } + + ctlx->usercb(hw, &rridresult, ctlx->usercb_data); + } +} + +static inline int hfa384x_docmd_wait(hfa384x_t *hw, hfa384x_metacmd_t *cmd) +{ + return hfa384x_docmd(hw, DOWAIT, cmd, NULL, NULL, NULL); +} + +static inline int +hfa384x_docmd_async(hfa384x_t *hw, + hfa384x_metacmd_t *cmd, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data) +{ + return hfa384x_docmd(hw, DOASYNC, cmd, cmdcb, usercb, usercb_data); +} + +static inline int +hfa384x_dorrid_wait(hfa384x_t *hw, u16 rid, void *riddata, + unsigned int riddatalen) +{ + return hfa384x_dorrid(hw, DOWAIT, + rid, riddata, riddatalen, NULL, NULL, NULL); +} + +static inline int +hfa384x_dorrid_async(hfa384x_t *hw, + u16 rid, void *riddata, unsigned int riddatalen, + ctlx_cmdcb_t cmdcb, + ctlx_usercb_t usercb, void *usercb_data) +{ + return hfa384x_dorrid(hw, DOASYNC, + rid, riddata, riddatalen, + cmdcb, usercb, usercb_data); +} + +static inline int +hfa384x_dowrid_wait(hfa384x_t *hw, u16 rid, void *riddata, + unsigned int riddatalen) +{ + return hfa384x_dowrid(hw, DOWAIT, + rid, riddata, riddatalen, NULL, NULL, NULL); +} + +static inline int +hfa384x_dowrid_async(hfa384x_t *hw, + u16 rid, void *riddata, unsigned int riddatalen, + ctlx_cmdcb_t cmdcb, + ctlx_usercb_t usercb, void *usercb_data) +{ + return hfa384x_dowrid(hw, DOASYNC, + rid, riddata, riddatalen, + cmdcb, usercb, usercb_data); +} + +static inline int +hfa384x_dormem_wait(hfa384x_t *hw, + u16 page, u16 offset, void *data, unsigned int len) +{ + return hfa384x_dormem(hw, DOWAIT, + page, offset, data, len, NULL, NULL, NULL); +} + +static inline int +hfa384x_dormem_async(hfa384x_t *hw, + u16 page, u16 offset, void *data, unsigned int len, + ctlx_cmdcb_t cmdcb, + ctlx_usercb_t usercb, void *usercb_data) +{ + return hfa384x_dormem(hw, DOASYNC, + page, offset, data, len, + cmdcb, usercb, usercb_data); +} + +static inline int +hfa384x_dowmem_wait(hfa384x_t *hw, + u16 page, u16 offset, void *data, unsigned int len) +{ + return hfa384x_dowmem(hw, DOWAIT, + page, offset, data, len, NULL, NULL, NULL); +} + +static inline int +hfa384x_dowmem_async(hfa384x_t *hw, + u16 page, + u16 offset, + void *data, + unsigned int len, + ctlx_cmdcb_t cmdcb, + ctlx_usercb_t usercb, void *usercb_data) +{ + return hfa384x_dowmem(hw, DOASYNC, + page, offset, data, len, + cmdcb, usercb, usercb_data); +} + +/*---------------------------------------------------------------- +* hfa384x_cmd_initialize +* +* Issues the initialize command and sets the hw->state based +* on the result. +* +* Arguments: +* hw device structure +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_cmd_initialize(hfa384x_t *hw) +{ + int result = 0; + int i; + hfa384x_metacmd_t cmd; + + cmd.cmd = HFA384x_CMDCODE_INIT; + cmd.parm0 = 0; + cmd.parm1 = 0; + cmd.parm2 = 0; + + result = hfa384x_docmd_wait(hw, &cmd); + + pr_debug("cmdresp.init: status=0x%04x, resp0=0x%04x, resp1=0x%04x, resp2=0x%04x\n", + cmd.result.status, + cmd.result.resp0, cmd.result.resp1, cmd.result.resp2); + if (result == 0) { + for (i = 0; i < HFA384x_NUMPORTS_MAX; i++) + hw->port_enabled[i] = 0; + } + + hw->link_status = HFA384x_LINK_NOTCONNECTED; + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_cmd_disable +* +* Issues the disable command to stop communications on one of +* the MACs 'ports'. +* +* Arguments: +* hw device structure +* macport MAC port number (host order) +* +* Returns: +* 0 success +* >0 f/w reported failure - f/w status code +* <0 driver reported error (timeout|bad arg) +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_cmd_disable(hfa384x_t *hw, u16 macport) +{ + int result = 0; + hfa384x_metacmd_t cmd; + + cmd.cmd = HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_DISABLE) | + HFA384x_CMD_MACPORT_SET(macport); + cmd.parm0 = 0; + cmd.parm1 = 0; + cmd.parm2 = 0; + + result = hfa384x_docmd_wait(hw, &cmd); + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_cmd_enable +* +* Issues the enable command to enable communications on one of +* the MACs 'ports'. +* +* Arguments: +* hw device structure +* macport MAC port number +* +* Returns: +* 0 success +* >0 f/w reported failure - f/w status code +* <0 driver reported error (timeout|bad arg) +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_cmd_enable(hfa384x_t *hw, u16 macport) +{ + int result = 0; + hfa384x_metacmd_t cmd; + + cmd.cmd = HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_ENABLE) | + HFA384x_CMD_MACPORT_SET(macport); + cmd.parm0 = 0; + cmd.parm1 = 0; + cmd.parm2 = 0; + + result = hfa384x_docmd_wait(hw, &cmd); + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_cmd_monitor +* +* Enables the 'monitor mode' of the MAC. Here's the description of +* monitor mode that I've received thus far: +* +* "The "monitor mode" of operation is that the MAC passes all +* frames for which the PLCP checks are correct. All received +* MPDUs are passed to the host with MAC Port = 7, with a +* receive status of good, FCS error, or undecryptable. Passing +* certain MPDUs is a violation of the 802.11 standard, but useful +* for a debugging tool." Normal communication is not possible +* while monitor mode is enabled. +* +* Arguments: +* hw device structure +* enable a code (0x0b|0x0f) that enables/disables +* monitor mode. (host order) +* +* Returns: +* 0 success +* >0 f/w reported failure - f/w status code +* <0 driver reported error (timeout|bad arg) +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_cmd_monitor(hfa384x_t *hw, u16 enable) +{ + int result = 0; + hfa384x_metacmd_t cmd; + + cmd.cmd = HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_MONITOR) | + HFA384x_CMD_AINFO_SET(enable); + cmd.parm0 = 0; + cmd.parm1 = 0; + cmd.parm2 = 0; + + result = hfa384x_docmd_wait(hw, &cmd); + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_cmd_download +* +* Sets the controls for the MAC controller code/data download +* process. The arguments set the mode and address associated +* with a download. Note that the aux registers should be enabled +* prior to setting one of the download enable modes. +* +* Arguments: +* hw device structure +* mode 0 - Disable programming and begin code exec +* 1 - Enable volatile mem programming +* 2 - Enable non-volatile mem programming +* 3 - Program non-volatile section from NV download +* buffer. +* (host order) +* lowaddr +* highaddr For mode 1, sets the high & low order bits of +* the "destination address". This address will be +* the execution start address when download is +* subsequently disabled. +* For mode 2, sets the high & low order bits of +* the destination in NV ram. +* For modes 0 & 3, should be zero. (host order) +* NOTE: these are CMD format. +* codelen Length of the data to write in mode 2, +* zero otherwise. (host order) +* +* Returns: +* 0 success +* >0 f/w reported failure - f/w status code +* <0 driver reported error (timeout|bad arg) +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_cmd_download(hfa384x_t *hw, u16 mode, u16 lowaddr, + u16 highaddr, u16 codelen) +{ + int result = 0; + hfa384x_metacmd_t cmd; + + pr_debug("mode=%d, lowaddr=0x%04x, highaddr=0x%04x, codelen=%d\n", + mode, lowaddr, highaddr, codelen); + + cmd.cmd = (HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_DOWNLD) | + HFA384x_CMD_PROGMODE_SET(mode)); + + cmd.parm0 = lowaddr; + cmd.parm1 = highaddr; + cmd.parm2 = codelen; + + result = hfa384x_docmd_wait(hw, &cmd); + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_corereset +* +* Perform a reset of the hfa38xx MAC core. We assume that the hw +* structure is in its "created" state. That is, it is initialized +* with proper values. Note that if a reset is done after the +* device has been active for awhile, the caller might have to clean +* up some leftover cruft in the hw structure. +* +* Arguments: +* hw device structure +* holdtime how long (in ms) to hold the reset +* settletime how long (in ms) to wait after releasing +* the reset +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_corereset(hfa384x_t *hw, int holdtime, int settletime, int genesis) +{ + int result = 0; + + result = usb_reset_device(hw->usb); + if (result < 0) { + netdev_err(hw->wlandev->netdev, "usb_reset_device() failed, result=%d.\n", + result); + } + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_usbctlx_complete_sync +* +* Waits for a synchronous CTLX object to complete, +* and then handles the response. +* +* Arguments: +* hw device structure +* ctlx CTLX ptr +* completor functor object to decide what to +* do with the CTLX's result. +* +* Returns: +* 0 Success +* -ERESTARTSYS Interrupted by a signal +* -EIO CTLX failed +* -ENODEV Adapter was unplugged +* ??? Result from completor +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +static int hfa384x_usbctlx_complete_sync(hfa384x_t *hw, + hfa384x_usbctlx_t *ctlx, + struct usbctlx_completor *completor) +{ + unsigned long flags; + int result; + + result = wait_for_completion_interruptible(&ctlx->done); + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* + * We can only handle the CTLX if the USB disconnect + * function has not run yet ... + */ +cleanup: + if (hw->wlandev->hwremoved) { + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + result = -ENODEV; + } else if (result != 0) { + int runqueue = 0; + + /* + * We were probably interrupted, so delete + * this CTLX asynchronously, kill the timers + * and the URB, and then start the next + * pending CTLX. + * + * NOTE: We can only delete the timers and + * the URB if this CTLX is active. + */ + if (ctlx == get_active_ctlx(hw)) { + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + + del_singleshot_timer_sync(&hw->reqtimer); + del_singleshot_timer_sync(&hw->resptimer); + hw->req_timer_done = 1; + hw->resp_timer_done = 1; + usb_kill_urb(&hw->ctlx_urb); + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + runqueue = 1; + + /* + * This scenario is so unlikely that I'm + * happy with a grubby "goto" solution ... + */ + if (hw->wlandev->hwremoved) + goto cleanup; + } + + /* + * The completion task will send this CTLX + * to the reaper the next time it runs. We + * are no longer in a hurry. + */ + ctlx->reapable = 1; + ctlx->state = CTLX_REQ_FAILED; + list_move_tail(&ctlx->list, &hw->ctlxq.completing); + + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + + if (runqueue) + hfa384x_usbctlxq_run(hw); + } else { + if (ctlx->state == CTLX_COMPLETE) { + result = completor->complete(completor); + } else { + netdev_warn(hw->wlandev->netdev, "CTLX[%d] error: state(%s)\n", + le16_to_cpu(ctlx->outbuf.type), + ctlxstr(ctlx->state)); + result = -EIO; + } + + list_del(&ctlx->list); + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + kfree(ctlx); + } + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_docmd +* +* Constructs a command CTLX and submits it. +* +* NOTE: Any changes to the 'post-submit' code in this function +* need to be carried over to hfa384x_cbcmd() since the handling +* is virtually identical. +* +* Arguments: +* hw device structure +* mode DOWAIT or DOASYNC +* cmd cmd structure. Includes all arguments and result +* data points. All in host order. in host order +* cmdcb command-specific callback +* usercb user callback for async calls, NULL for DOWAIT calls +* usercb_data user supplied data pointer for async calls, NULL +* for DOASYNC calls +* +* Returns: +* 0 success +* -EIO CTLX failure +* -ERESTARTSYS Awakened on signal +* >0 command indicated error, Status and Resp0-2 are +* in hw structure. +* +* Side effects: +* +* +* Call context: +* process +----------------------------------------------------------------*/ +static int +hfa384x_docmd(hfa384x_t *hw, + enum cmd_mode mode, + hfa384x_metacmd_t *cmd, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data) +{ + int result; + hfa384x_usbctlx_t *ctlx; + + ctlx = usbctlx_alloc(); + if (ctlx == NULL) { + result = -ENOMEM; + goto done; + } + + /* Initialize the command */ + ctlx->outbuf.cmdreq.type = cpu_to_le16(HFA384x_USB_CMDREQ); + ctlx->outbuf.cmdreq.cmd = cpu_to_le16(cmd->cmd); + ctlx->outbuf.cmdreq.parm0 = cpu_to_le16(cmd->parm0); + ctlx->outbuf.cmdreq.parm1 = cpu_to_le16(cmd->parm1); + ctlx->outbuf.cmdreq.parm2 = cpu_to_le16(cmd->parm2); + + ctlx->outbufsize = sizeof(ctlx->outbuf.cmdreq); + + pr_debug("cmdreq: cmd=0x%04x parm0=0x%04x parm1=0x%04x parm2=0x%04x\n", + cmd->cmd, cmd->parm0, cmd->parm1, cmd->parm2); + + ctlx->reapable = mode; + ctlx->cmdcb = cmdcb; + ctlx->usercb = usercb; + ctlx->usercb_data = usercb_data; + + result = hfa384x_usbctlx_submit(hw, ctlx); + if (result != 0) { + kfree(ctlx); + } else if (mode == DOWAIT) { + struct usbctlx_cmd_completor completor; + + result = + hfa384x_usbctlx_complete_sync(hw, ctlx, + init_cmd_completor(&completor, + &ctlx-> + inbuf. + cmdresp, + &cmd-> + result)); + } + +done: + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_dorrid +* +* Constructs a read rid CTLX and issues it. +* +* NOTE: Any changes to the 'post-submit' code in this function +* need to be carried over to hfa384x_cbrrid() since the handling +* is virtually identical. +* +* Arguments: +* hw device structure +* mode DOWAIT or DOASYNC +* rid Read RID number (host order) +* riddata Caller supplied buffer that MAC formatted RID.data +* record will be written to for DOWAIT calls. Should +* be NULL for DOASYNC calls. +* riddatalen Buffer length for DOWAIT calls. Zero for DOASYNC calls. +* cmdcb command callback for async calls, NULL for DOWAIT calls +* usercb user callback for async calls, NULL for DOWAIT calls +* usercb_data user supplied data pointer for async calls, NULL +* for DOWAIT calls +* +* Returns: +* 0 success +* -EIO CTLX failure +* -ERESTARTSYS Awakened on signal +* -ENODATA riddatalen != macdatalen +* >0 command indicated error, Status and Resp0-2 are +* in hw structure. +* +* Side effects: +* +* Call context: +* interrupt (DOASYNC) +* process (DOWAIT or DOASYNC) +----------------------------------------------------------------*/ +static int +hfa384x_dorrid(hfa384x_t *hw, + enum cmd_mode mode, + u16 rid, + void *riddata, + unsigned int riddatalen, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data) +{ + int result; + hfa384x_usbctlx_t *ctlx; + + ctlx = usbctlx_alloc(); + if (ctlx == NULL) { + result = -ENOMEM; + goto done; + } + + /* Initialize the command */ + ctlx->outbuf.rridreq.type = cpu_to_le16(HFA384x_USB_RRIDREQ); + ctlx->outbuf.rridreq.frmlen = + cpu_to_le16(sizeof(ctlx->outbuf.rridreq.rid)); + ctlx->outbuf.rridreq.rid = cpu_to_le16(rid); + + ctlx->outbufsize = sizeof(ctlx->outbuf.rridreq); + + ctlx->reapable = mode; + ctlx->cmdcb = cmdcb; + ctlx->usercb = usercb; + ctlx->usercb_data = usercb_data; + + /* Submit the CTLX */ + result = hfa384x_usbctlx_submit(hw, ctlx); + if (result != 0) { + kfree(ctlx); + } else if (mode == DOWAIT) { + struct usbctlx_rrid_completor completor; + + result = + hfa384x_usbctlx_complete_sync(hw, ctlx, + init_rrid_completor + (&completor, + &ctlx->inbuf.rridresp, + riddata, riddatalen)); + } + +done: + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_dowrid +* +* Constructs a write rid CTLX and issues it. +* +* NOTE: Any changes to the 'post-submit' code in this function +* need to be carried over to hfa384x_cbwrid() since the handling +* is virtually identical. +* +* Arguments: +* hw device structure +* enum cmd_mode DOWAIT or DOASYNC +* rid RID code +* riddata Data portion of RID formatted for MAC +* riddatalen Length of the data portion in bytes +* cmdcb command callback for async calls, NULL for DOWAIT calls +* usercb user callback for async calls, NULL for DOWAIT calls +* usercb_data user supplied data pointer for async calls +* +* Returns: +* 0 success +* -ETIMEDOUT timed out waiting for register ready or +* command completion +* >0 command indicated error, Status and Resp0-2 are +* in hw structure. +* +* Side effects: +* +* Call context: +* interrupt (DOASYNC) +* process (DOWAIT or DOASYNC) +----------------------------------------------------------------*/ +static int +hfa384x_dowrid(hfa384x_t *hw, + enum cmd_mode mode, + u16 rid, + void *riddata, + unsigned int riddatalen, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data) +{ + int result; + hfa384x_usbctlx_t *ctlx; + + ctlx = usbctlx_alloc(); + if (ctlx == NULL) { + result = -ENOMEM; + goto done; + } + + /* Initialize the command */ + ctlx->outbuf.wridreq.type = cpu_to_le16(HFA384x_USB_WRIDREQ); + ctlx->outbuf.wridreq.frmlen = cpu_to_le16((sizeof + (ctlx->outbuf.wridreq.rid) + + riddatalen + 1) / 2); + ctlx->outbuf.wridreq.rid = cpu_to_le16(rid); + memcpy(ctlx->outbuf.wridreq.data, riddata, riddatalen); + + ctlx->outbufsize = sizeof(ctlx->outbuf.wridreq.type) + + sizeof(ctlx->outbuf.wridreq.frmlen) + + sizeof(ctlx->outbuf.wridreq.rid) + riddatalen; + + ctlx->reapable = mode; + ctlx->cmdcb = cmdcb; + ctlx->usercb = usercb; + ctlx->usercb_data = usercb_data; + + /* Submit the CTLX */ + result = hfa384x_usbctlx_submit(hw, ctlx); + if (result != 0) { + kfree(ctlx); + } else if (mode == DOWAIT) { + struct usbctlx_cmd_completor completor; + hfa384x_cmdresult_t wridresult; + + result = hfa384x_usbctlx_complete_sync(hw, + ctlx, + init_wrid_completor + (&completor, + &ctlx->inbuf.wridresp, + &wridresult)); + } + +done: + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_dormem +* +* Constructs a readmem CTLX and issues it. +* +* NOTE: Any changes to the 'post-submit' code in this function +* need to be carried over to hfa384x_cbrmem() since the handling +* is virtually identical. +* +* Arguments: +* hw device structure +* mode DOWAIT or DOASYNC +* page MAC address space page (CMD format) +* offset MAC address space offset +* data Ptr to data buffer to receive read +* len Length of the data to read (max == 2048) +* cmdcb command callback for async calls, NULL for DOWAIT calls +* usercb user callback for async calls, NULL for DOWAIT calls +* usercb_data user supplied data pointer for async calls +* +* Returns: +* 0 success +* -ETIMEDOUT timed out waiting for register ready or +* command completion +* >0 command indicated error, Status and Resp0-2 are +* in hw structure. +* +* Side effects: +* +* Call context: +* interrupt (DOASYNC) +* process (DOWAIT or DOASYNC) +----------------------------------------------------------------*/ +static int +hfa384x_dormem(hfa384x_t *hw, + enum cmd_mode mode, + u16 page, + u16 offset, + void *data, + unsigned int len, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data) +{ + int result; + hfa384x_usbctlx_t *ctlx; + + ctlx = usbctlx_alloc(); + if (ctlx == NULL) { + result = -ENOMEM; + goto done; + } + + /* Initialize the command */ + ctlx->outbuf.rmemreq.type = cpu_to_le16(HFA384x_USB_RMEMREQ); + ctlx->outbuf.rmemreq.frmlen = + cpu_to_le16(sizeof(ctlx->outbuf.rmemreq.offset) + + sizeof(ctlx->outbuf.rmemreq.page) + len); + ctlx->outbuf.rmemreq.offset = cpu_to_le16(offset); + ctlx->outbuf.rmemreq.page = cpu_to_le16(page); + + ctlx->outbufsize = sizeof(ctlx->outbuf.rmemreq); + + pr_debug("type=0x%04x frmlen=%d offset=0x%04x page=0x%04x\n", + ctlx->outbuf.rmemreq.type, + ctlx->outbuf.rmemreq.frmlen, + ctlx->outbuf.rmemreq.offset, ctlx->outbuf.rmemreq.page); + + pr_debug("pktsize=%zd\n", ROUNDUP64(sizeof(ctlx->outbuf.rmemreq))); + + ctlx->reapable = mode; + ctlx->cmdcb = cmdcb; + ctlx->usercb = usercb; + ctlx->usercb_data = usercb_data; + + result = hfa384x_usbctlx_submit(hw, ctlx); + if (result != 0) { + kfree(ctlx); + } else if (mode == DOWAIT) { + struct usbctlx_rmem_completor completor; + + result = + hfa384x_usbctlx_complete_sync(hw, ctlx, + init_rmem_completor + (&completor, + &ctlx->inbuf.rmemresp, data, + len)); + } + +done: + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_dowmem +* +* Constructs a writemem CTLX and issues it. +* +* NOTE: Any changes to the 'post-submit' code in this function +* need to be carried over to hfa384x_cbwmem() since the handling +* is virtually identical. +* +* Arguments: +* hw device structure +* mode DOWAIT or DOASYNC +* page MAC address space page (CMD format) +* offset MAC address space offset +* data Ptr to data buffer containing write data +* len Length of the data to read (max == 2048) +* cmdcb command callback for async calls, NULL for DOWAIT calls +* usercb user callback for async calls, NULL for DOWAIT calls +* usercb_data user supplied data pointer for async calls. +* +* Returns: +* 0 success +* -ETIMEDOUT timed out waiting for register ready or +* command completion +* >0 command indicated error, Status and Resp0-2 are +* in hw structure. +* +* Side effects: +* +* Call context: +* interrupt (DOWAIT) +* process (DOWAIT or DOASYNC) +----------------------------------------------------------------*/ +static int +hfa384x_dowmem(hfa384x_t *hw, + enum cmd_mode mode, + u16 page, + u16 offset, + void *data, + unsigned int len, + ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data) +{ + int result; + hfa384x_usbctlx_t *ctlx; + + pr_debug("page=0x%04x offset=0x%04x len=%d\n", page, offset, len); + + ctlx = usbctlx_alloc(); + if (ctlx == NULL) { + result = -ENOMEM; + goto done; + } + + /* Initialize the command */ + ctlx->outbuf.wmemreq.type = cpu_to_le16(HFA384x_USB_WMEMREQ); + ctlx->outbuf.wmemreq.frmlen = + cpu_to_le16(sizeof(ctlx->outbuf.wmemreq.offset) + + sizeof(ctlx->outbuf.wmemreq.page) + len); + ctlx->outbuf.wmemreq.offset = cpu_to_le16(offset); + ctlx->outbuf.wmemreq.page = cpu_to_le16(page); + memcpy(ctlx->outbuf.wmemreq.data, data, len); + + ctlx->outbufsize = sizeof(ctlx->outbuf.wmemreq.type) + + sizeof(ctlx->outbuf.wmemreq.frmlen) + + sizeof(ctlx->outbuf.wmemreq.offset) + + sizeof(ctlx->outbuf.wmemreq.page) + len; + + ctlx->reapable = mode; + ctlx->cmdcb = cmdcb; + ctlx->usercb = usercb; + ctlx->usercb_data = usercb_data; + + result = hfa384x_usbctlx_submit(hw, ctlx); + if (result != 0) { + kfree(ctlx); + } else if (mode == DOWAIT) { + struct usbctlx_cmd_completor completor; + hfa384x_cmdresult_t wmemresult; + + result = hfa384x_usbctlx_complete_sync(hw, + ctlx, + init_wmem_completor + (&completor, + &ctlx->inbuf.wmemresp, + &wmemresult)); + } + +done: + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_commtallies +* +* Send a commtallies inquiry to the MAC. Note that this is an async +* call that will result in an info frame arriving sometime later. +* +* Arguments: +* hw device structure +* +* Returns: +* zero success. +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_commtallies(hfa384x_t *hw) +{ + hfa384x_metacmd_t cmd; + + cmd.cmd = HFA384x_CMDCODE_INQ; + cmd.parm0 = HFA384x_IT_COMMTALLIES; + cmd.parm1 = 0; + cmd.parm2 = 0; + + hfa384x_docmd_async(hw, &cmd, NULL, NULL, NULL); + + return 0; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_disable +* +* Issues the disable command to stop communications on one of +* the MACs 'ports'. Only macport 0 is valid for stations. +* APs may also disable macports 1-6. Only ports that have been +* previously enabled may be disabled. +* +* Arguments: +* hw device structure +* macport MAC port number (host order) +* +* Returns: +* 0 success +* >0 f/w reported failure - f/w status code +* <0 driver reported error (timeout|bad arg) +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_disable(hfa384x_t *hw, u16 macport) +{ + int result = 0; + + if ((!hw->isap && macport != 0) || + (hw->isap && !(macport <= HFA384x_PORTID_MAX)) || + !(hw->port_enabled[macport])) { + result = -EINVAL; + } else { + result = hfa384x_cmd_disable(hw, macport); + if (result == 0) + hw->port_enabled[macport] = 0; + } + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_enable +* +* Issues the enable command to enable communications on one of +* the MACs 'ports'. Only macport 0 is valid for stations. +* APs may also enable macports 1-6. Only ports that are currently +* disabled may be enabled. +* +* Arguments: +* hw device structure +* macport MAC port number +* +* Returns: +* 0 success +* >0 f/w reported failure - f/w status code +* <0 driver reported error (timeout|bad arg) +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_enable(hfa384x_t *hw, u16 macport) +{ + int result = 0; + + if ((!hw->isap && macport != 0) || + (hw->isap && !(macport <= HFA384x_PORTID_MAX)) || + (hw->port_enabled[macport])) { + result = -EINVAL; + } else { + result = hfa384x_cmd_enable(hw, macport); + if (result == 0) + hw->port_enabled[macport] = 1; + } + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_flashdl_enable +* +* Begins the flash download state. Checks to see that we're not +* already in a download state and that a port isn't enabled. +* Sets the download state and retrieves the flash download +* buffer location, buffer size, and timeout length. +* +* Arguments: +* hw device structure +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_flashdl_enable(hfa384x_t *hw) +{ + int result = 0; + int i; + + /* Check that a port isn't active */ + for (i = 0; i < HFA384x_PORTID_MAX; i++) { + if (hw->port_enabled[i]) { + pr_debug("called when port enabled.\n"); + return -EINVAL; + } + } + + /* Check that we're not already in a download state */ + if (hw->dlstate != HFA384x_DLSTATE_DISABLED) + return -EINVAL; + + /* Retrieve the buffer loc&size and timeout */ + result = hfa384x_drvr_getconfig(hw, HFA384x_RID_DOWNLOADBUFFER, + &(hw->bufinfo), sizeof(hw->bufinfo)); + if (result) + return result; + + hw->bufinfo.page = le16_to_cpu(hw->bufinfo.page); + hw->bufinfo.offset = le16_to_cpu(hw->bufinfo.offset); + hw->bufinfo.len = le16_to_cpu(hw->bufinfo.len); + result = hfa384x_drvr_getconfig16(hw, HFA384x_RID_MAXLOADTIME, + &(hw->dltimeout)); + if (result) + return result; + + hw->dltimeout = le16_to_cpu(hw->dltimeout); + + pr_debug("flashdl_enable\n"); + + hw->dlstate = HFA384x_DLSTATE_FLASHENABLED; + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_flashdl_disable +* +* Ends the flash download state. Note that this will cause the MAC +* firmware to restart. +* +* Arguments: +* hw device structure +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_flashdl_disable(hfa384x_t *hw) +{ + /* Check that we're already in the download state */ + if (hw->dlstate != HFA384x_DLSTATE_FLASHENABLED) + return -EINVAL; + + pr_debug("flashdl_enable\n"); + + /* There isn't much we can do at this point, so I don't */ + /* bother w/ the return value */ + hfa384x_cmd_download(hw, HFA384x_PROGMODE_DISABLE, 0, 0, 0); + hw->dlstate = HFA384x_DLSTATE_DISABLED; + + return 0; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_flashdl_write +* +* Performs a FLASH download of a chunk of data. First checks to see +* that we're in the FLASH download state, then sets the download +* mode, uses the aux functions to 1) copy the data to the flash +* buffer, 2) sets the download 'write flash' mode, 3) readback and +* compare. Lather rinse, repeat as many times an necessary to get +* all the given data into flash. +* When all data has been written using this function (possibly +* repeatedly), call drvr_flashdl_disable() to end the download state +* and restart the MAC. +* +* Arguments: +* hw device structure +* daddr Card address to write to. (host order) +* buf Ptr to data to write. +* len Length of data (host order). +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_flashdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len) +{ + int result = 0; + u32 dlbufaddr; + int nburns; + u32 burnlen; + u32 burndaddr; + u16 burnlo; + u16 burnhi; + int nwrites; + u8 *writebuf; + u16 writepage; + u16 writeoffset; + u32 writelen; + int i; + int j; + + pr_debug("daddr=0x%08x len=%d\n", daddr, len); + + /* Check that we're in the flash download state */ + if (hw->dlstate != HFA384x_DLSTATE_FLASHENABLED) + return -EINVAL; + + netdev_info(hw->wlandev->netdev, + "Download %d bytes to flash @0x%06x\n", len, daddr); + + /* Convert to flat address for arithmetic */ + /* NOTE: dlbuffer RID stores the address in AUX format */ + dlbufaddr = + HFA384x_ADDR_AUX_MKFLAT(hw->bufinfo.page, hw->bufinfo.offset); + pr_debug("dlbuf.page=0x%04x dlbuf.offset=0x%04x dlbufaddr=0x%08x\n", + hw->bufinfo.page, hw->bufinfo.offset, dlbufaddr); + /* Calculations to determine how many fills of the dlbuffer to do + * and how many USB wmemreq's to do for each fill. At this point + * in time, the dlbuffer size and the wmemreq size are the same. + * Therefore, nwrites should always be 1. The extra complexity + * here is a hedge against future changes. + */ + + /* Figure out how many times to do the flash programming */ + nburns = len / hw->bufinfo.len; + nburns += (len % hw->bufinfo.len) ? 1 : 0; + + /* For each flash program cycle, how many USB wmemreq's are needed? */ + nwrites = hw->bufinfo.len / HFA384x_USB_RWMEM_MAXLEN; + nwrites += (hw->bufinfo.len % HFA384x_USB_RWMEM_MAXLEN) ? 1 : 0; + + /* For each burn */ + for (i = 0; i < nburns; i++) { + /* Get the dest address and len */ + burnlen = (len - (hw->bufinfo.len * i)) > hw->bufinfo.len ? + hw->bufinfo.len : (len - (hw->bufinfo.len * i)); + burndaddr = daddr + (hw->bufinfo.len * i); + burnlo = HFA384x_ADDR_CMD_MKOFF(burndaddr); + burnhi = HFA384x_ADDR_CMD_MKPAGE(burndaddr); + + netdev_info(hw->wlandev->netdev, "Writing %d bytes to flash @0x%06x\n", + burnlen, burndaddr); + + /* Set the download mode */ + result = hfa384x_cmd_download(hw, HFA384x_PROGMODE_NV, + burnlo, burnhi, burnlen); + if (result) { + netdev_err(hw->wlandev->netdev, + "download(NV,lo=%x,hi=%x,len=%x) cmd failed, result=%d. Aborting d/l\n", + burnlo, burnhi, burnlen, result); + goto exit_proc; + } + + /* copy the data to the flash download buffer */ + for (j = 0; j < nwrites; j++) { + writebuf = buf + + (i * hw->bufinfo.len) + + (j * HFA384x_USB_RWMEM_MAXLEN); + + writepage = HFA384x_ADDR_CMD_MKPAGE(dlbufaddr + + (j * HFA384x_USB_RWMEM_MAXLEN)); + writeoffset = HFA384x_ADDR_CMD_MKOFF(dlbufaddr + + (j * HFA384x_USB_RWMEM_MAXLEN)); + + writelen = burnlen - (j * HFA384x_USB_RWMEM_MAXLEN); + writelen = writelen > HFA384x_USB_RWMEM_MAXLEN ? + HFA384x_USB_RWMEM_MAXLEN : writelen; + + result = hfa384x_dowmem_wait(hw, + writepage, + writeoffset, + writebuf, writelen); + } + + /* set the download 'write flash' mode */ + result = hfa384x_cmd_download(hw, + HFA384x_PROGMODE_NVWRITE, + 0, 0, 0); + if (result) { + netdev_err(hw->wlandev->netdev, + "download(NVWRITE,lo=%x,hi=%x,len=%x) cmd failed, result=%d. Aborting d/l\n", + burnlo, burnhi, burnlen, result); + goto exit_proc; + } + + /* TODO: We really should do a readback and compare. */ + } + +exit_proc: + + /* Leave the firmware in the 'post-prog' mode. flashdl_disable will */ + /* actually disable programming mode. Remember, that will cause the */ + /* the firmware to effectively reset itself. */ + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_getconfig +* +* Performs the sequence necessary to read a config/info item. +* +* Arguments: +* hw device structure +* rid config/info record id (host order) +* buf host side record buffer. Upon return it will +* contain the body portion of the record (minus the +* RID and len). +* len buffer length (in bytes, should match record length) +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* -ENODATA length mismatch between argument and retrieved +* record. +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_getconfig(hfa384x_t *hw, u16 rid, void *buf, u16 len) +{ + return hfa384x_dorrid_wait(hw, rid, buf, len); +} + +/*---------------------------------------------------------------- + * hfa384x_drvr_getconfig_async + * + * Performs the sequence necessary to perform an async read of + * of a config/info item. + * + * Arguments: + * hw device structure + * rid config/info record id (host order) + * buf host side record buffer. Upon return it will + * contain the body portion of the record (minus the + * RID and len). + * len buffer length (in bytes, should match record length) + * cbfn caller supplied callback, called when the command + * is done (successful or not). + * cbfndata pointer to some caller supplied data that will be + * passed in as an argument to the cbfn. + * + * Returns: + * nothing the cbfn gets a status argument identifying if + * any errors occur. + * Side effects: + * Queues an hfa384x_usbcmd_t for subsequent execution. + * + * Call context: + * Any + ----------------------------------------------------------------*/ +int +hfa384x_drvr_getconfig_async(hfa384x_t *hw, + u16 rid, ctlx_usercb_t usercb, void *usercb_data) +{ + return hfa384x_dorrid_async(hw, rid, NULL, 0, + hfa384x_cb_rrid, usercb, usercb_data); +} + +/*---------------------------------------------------------------- + * hfa384x_drvr_setconfig_async + * + * Performs the sequence necessary to write a config/info item. + * + * Arguments: + * hw device structure + * rid config/info record id (in host order) + * buf host side record buffer + * len buffer length (in bytes) + * usercb completion callback + * usercb_data completion callback argument + * + * Returns: + * 0 success + * >0 f/w reported error - f/w status code + * <0 driver reported error + * + * Side effects: + * + * Call context: + * process + ----------------------------------------------------------------*/ +int +hfa384x_drvr_setconfig_async(hfa384x_t *hw, + u16 rid, + void *buf, + u16 len, ctlx_usercb_t usercb, void *usercb_data) +{ + return hfa384x_dowrid_async(hw, rid, buf, len, + hfa384x_cb_status, usercb, usercb_data); +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_ramdl_disable +* +* Ends the ram download state. +* +* Arguments: +* hw device structure +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_ramdl_disable(hfa384x_t *hw) +{ + /* Check that we're already in the download state */ + if (hw->dlstate != HFA384x_DLSTATE_RAMENABLED) + return -EINVAL; + + pr_debug("ramdl_disable()\n"); + + /* There isn't much we can do at this point, so I don't */ + /* bother w/ the return value */ + hfa384x_cmd_download(hw, HFA384x_PROGMODE_DISABLE, 0, 0, 0); + hw->dlstate = HFA384x_DLSTATE_DISABLED; + + return 0; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_ramdl_enable +* +* Begins the ram download state. Checks to see that we're not +* already in a download state and that a port isn't enabled. +* Sets the download state and calls cmd_download with the +* ENABLE_VOLATILE subcommand and the exeaddr argument. +* +* Arguments: +* hw device structure +* exeaddr the card execution address that will be +* jumped to when ramdl_disable() is called +* (host order). +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_ramdl_enable(hfa384x_t *hw, u32 exeaddr) +{ + int result = 0; + u16 lowaddr; + u16 hiaddr; + int i; + + /* Check that a port isn't active */ + for (i = 0; i < HFA384x_PORTID_MAX; i++) { + if (hw->port_enabled[i]) { + netdev_err(hw->wlandev->netdev, + "Can't download with a macport enabled.\n"); + return -EINVAL; + } + } + + /* Check that we're not already in a download state */ + if (hw->dlstate != HFA384x_DLSTATE_DISABLED) { + netdev_err(hw->wlandev->netdev, "Download state not disabled.\n"); + return -EINVAL; + } + + pr_debug("ramdl_enable, exeaddr=0x%08x\n", exeaddr); + + /* Call the download(1,addr) function */ + lowaddr = HFA384x_ADDR_CMD_MKOFF(exeaddr); + hiaddr = HFA384x_ADDR_CMD_MKPAGE(exeaddr); + + result = hfa384x_cmd_download(hw, HFA384x_PROGMODE_RAM, + lowaddr, hiaddr, 0); + + if (result == 0) { + /* Set the download state */ + hw->dlstate = HFA384x_DLSTATE_RAMENABLED; + } else { + pr_debug("cmd_download(0x%04x, 0x%04x) failed, result=%d.\n", + lowaddr, hiaddr, result); + } + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_ramdl_write +* +* Performs a RAM download of a chunk of data. First checks to see +* that we're in the RAM download state, then uses the [read|write]mem USB +* commands to 1) copy the data, 2) readback and compare. The download +* state is unaffected. When all data has been written using +* this function, call drvr_ramdl_disable() to end the download state +* and restart the MAC. +* +* Arguments: +* hw device structure +* daddr Card address to write to. (host order) +* buf Ptr to data to write. +* len Length of data (host order). +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_ramdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len) +{ + int result = 0; + int nwrites; + u8 *data = buf; + int i; + u32 curraddr; + u16 currpage; + u16 curroffset; + u16 currlen; + + /* Check that we're in the ram download state */ + if (hw->dlstate != HFA384x_DLSTATE_RAMENABLED) + return -EINVAL; + + netdev_info(hw->wlandev->netdev, "Writing %d bytes to ram @0x%06x\n", + len, daddr); + + /* How many dowmem calls? */ + nwrites = len / HFA384x_USB_RWMEM_MAXLEN; + nwrites += len % HFA384x_USB_RWMEM_MAXLEN ? 1 : 0; + + /* Do blocking wmem's */ + for (i = 0; i < nwrites; i++) { + /* make address args */ + curraddr = daddr + (i * HFA384x_USB_RWMEM_MAXLEN); + currpage = HFA384x_ADDR_CMD_MKPAGE(curraddr); + curroffset = HFA384x_ADDR_CMD_MKOFF(curraddr); + currlen = len - (i * HFA384x_USB_RWMEM_MAXLEN); + if (currlen > HFA384x_USB_RWMEM_MAXLEN) + currlen = HFA384x_USB_RWMEM_MAXLEN; + + /* Do blocking ctlx */ + result = hfa384x_dowmem_wait(hw, + currpage, + curroffset, + data + + (i * HFA384x_USB_RWMEM_MAXLEN), + currlen); + + if (result) + break; + + /* TODO: We really should have a readback. */ + } + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_readpda +* +* Performs the sequence to read the PDA space. Note there is no +* drvr_writepda() function. Writing a PDA is +* generally implemented by a calling component via calls to +* cmd_download and writing to the flash download buffer via the +* aux regs. +* +* Arguments: +* hw device structure +* buf buffer to store PDA in +* len buffer length +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* -ETIMEDOUT timeout waiting for the cmd regs to become +* available, or waiting for the control reg +* to indicate the Aux port is enabled. +* -ENODATA the buffer does NOT contain a valid PDA. +* Either the card PDA is bad, or the auxdata +* reads are giving us garbage. + +* +* Side effects: +* +* Call context: +* process or non-card interrupt. +----------------------------------------------------------------*/ +int hfa384x_drvr_readpda(hfa384x_t *hw, void *buf, unsigned int len) +{ + int result = 0; + u16 *pda = buf; + int pdaok = 0; + int morepdrs = 1; + int currpdr = 0; /* word offset of the current pdr */ + size_t i; + u16 pdrlen; /* pdr length in bytes, host order */ + u16 pdrcode; /* pdr code, host order */ + u16 currpage; + u16 curroffset; + struct pdaloc { + u32 cardaddr; + u16 auxctl; + } pdaloc[] = { + { + HFA3842_PDA_BASE, 0}, { + HFA3841_PDA_BASE, 0}, { + HFA3841_PDA_BOGUS_BASE, 0} + }; + + /* Read the pda from each known address. */ + for (i = 0; i < ARRAY_SIZE(pdaloc); i++) { + /* Make address */ + currpage = HFA384x_ADDR_CMD_MKPAGE(pdaloc[i].cardaddr); + curroffset = HFA384x_ADDR_CMD_MKOFF(pdaloc[i].cardaddr); + + /* units of bytes */ + result = hfa384x_dormem_wait(hw, currpage, curroffset, buf, + len); + + if (result) { + netdev_warn(hw->wlandev->netdev, + "Read from index %zd failed, continuing\n", + i); + continue; + } + + /* Test for garbage */ + pdaok = 1; /* initially assume good */ + morepdrs = 1; + while (pdaok && morepdrs) { + pdrlen = le16_to_cpu(pda[currpdr]) * 2; + pdrcode = le16_to_cpu(pda[currpdr + 1]); + /* Test the record length */ + if (pdrlen > HFA384x_PDR_LEN_MAX || pdrlen == 0) { + netdev_err(hw->wlandev->netdev, + "pdrlen invalid=%d\n", pdrlen); + pdaok = 0; + break; + } + /* Test the code */ + if (!hfa384x_isgood_pdrcode(pdrcode)) { + netdev_err(hw->wlandev->netdev, "pdrcode invalid=%d\n", + pdrcode); + pdaok = 0; + break; + } + /* Test for completion */ + if (pdrcode == HFA384x_PDR_END_OF_PDA) + morepdrs = 0; + + /* Move to the next pdr (if necessary) */ + if (morepdrs) { + /* note the access to pda[], need words here */ + currpdr += le16_to_cpu(pda[currpdr]) + 1; + } + } + if (pdaok) { + netdev_info(hw->wlandev->netdev, + "PDA Read from 0x%08x in %s space.\n", + pdaloc[i].cardaddr, + pdaloc[i].auxctl == 0 ? "EXTDS" : + pdaloc[i].auxctl == 1 ? "NV" : + pdaloc[i].auxctl == 2 ? "PHY" : + pdaloc[i].auxctl == 3 ? "ICSRAM" : + "<bogus auxctl>"); + break; + } + } + result = pdaok ? 0 : -ENODATA; + + if (result) + pr_debug("Failure: pda is not okay\n"); + + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_setconfig +* +* Performs the sequence necessary to write a config/info item. +* +* Arguments: +* hw device structure +* rid config/info record id (in host order) +* buf host side record buffer +* len buffer length (in bytes) +* +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_setconfig(hfa384x_t *hw, u16 rid, void *buf, u16 len) +{ + return hfa384x_dowrid_wait(hw, rid, buf, len); +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_start +* +* Issues the MAC initialize command, sets up some data structures, +* and enables the interrupts. After this function completes, the +* low-level stuff should be ready for any/all commands. +* +* Arguments: +* hw device structure +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ + +int hfa384x_drvr_start(hfa384x_t *hw) +{ + int result, result1, result2; + u16 status; + + might_sleep(); + + /* Clear endpoint stalls - but only do this if the endpoint + * is showing a stall status. Some prism2 cards seem to behave + * badly if a clear_halt is called when the endpoint is already + * ok + */ + result = + usb_get_status(hw->usb, USB_RECIP_ENDPOINT, hw->endp_in, &status); + if (result < 0) { + netdev_err(hw->wlandev->netdev, "Cannot get bulk in endpoint status.\n"); + goto done; + } + if ((status == 1) && usb_clear_halt(hw->usb, hw->endp_in)) + netdev_err(hw->wlandev->netdev, "Failed to reset bulk in endpoint.\n"); + + result = + usb_get_status(hw->usb, USB_RECIP_ENDPOINT, hw->endp_out, &status); + if (result < 0) { + netdev_err(hw->wlandev->netdev, "Cannot get bulk out endpoint status.\n"); + goto done; + } + if ((status == 1) && usb_clear_halt(hw->usb, hw->endp_out)) + netdev_err(hw->wlandev->netdev, "Failed to reset bulk out endpoint.\n"); + + /* Synchronous unlink, in case we're trying to restart the driver */ + usb_kill_urb(&hw->rx_urb); + + /* Post the IN urb */ + result = submit_rx_urb(hw, GFP_KERNEL); + if (result != 0) { + netdev_err(hw->wlandev->netdev, + "Fatal, failed to submit RX URB, result=%d\n", + result); + goto done; + } + + /* Call initialize twice, with a 1 second sleep in between. + * This is a nasty work-around since many prism2 cards seem to + * need time to settle after an init from cold. The second + * call to initialize in theory is not necessary - but we call + * it anyway as a double insurance policy: + * 1) If the first init should fail, the second may well succeed + * and the card can still be used + * 2) It helps ensures all is well with the card after the first + * init and settle time. + */ + result1 = hfa384x_cmd_initialize(hw); + msleep(1000); + result = hfa384x_cmd_initialize(hw); + result2 = result; + if (result1 != 0) { + if (result2 != 0) { + netdev_err(hw->wlandev->netdev, + "cmd_initialize() failed on two attempts, results %d and %d\n", + result1, result2); + usb_kill_urb(&hw->rx_urb); + goto done; + } else { + pr_debug("First cmd_initialize() failed (result %d),\n", + result1); + pr_debug("but second attempt succeeded. All should be ok\n"); + } + } else if (result2 != 0) { + netdev_warn(hw->wlandev->netdev, "First cmd_initialize() succeeded, but second attempt failed (result=%d)\n", + result2); + netdev_warn(hw->wlandev->netdev, + "Most likely the card will be functional\n"); + goto done; + } + + hw->state = HFA384x_STATE_RUNNING; + +done: + return result; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_stop +* +* Shuts down the MAC to the point where it is safe to unload the +* driver. Any subsystem that may be holding a data or function +* ptr into the driver must be cleared/deinitialized. +* +* Arguments: +* hw device structure +* Returns: +* 0 success +* >0 f/w reported error - f/w status code +* <0 driver reported error +* +* Side effects: +* +* Call context: +* process +----------------------------------------------------------------*/ +int hfa384x_drvr_stop(hfa384x_t *hw) +{ + int i; + + might_sleep(); + + /* There's no need for spinlocks here. The USB "disconnect" + * function sets this "removed" flag and then calls us. + */ + if (!hw->wlandev->hwremoved) { + /* Call initialize to leave the MAC in its 'reset' state */ + hfa384x_cmd_initialize(hw); + + /* Cancel the rxurb */ + usb_kill_urb(&hw->rx_urb); + } + + hw->link_status = HFA384x_LINK_NOTCONNECTED; + hw->state = HFA384x_STATE_INIT; + + del_timer_sync(&hw->commsqual_timer); + + /* Clear all the port status */ + for (i = 0; i < HFA384x_NUMPORTS_MAX; i++) + hw->port_enabled[i] = 0; + + return 0; +} + +/*---------------------------------------------------------------- +* hfa384x_drvr_txframe +* +* Takes a frame from prism2sta and queues it for transmission. +* +* Arguments: +* hw device structure +* skb packet buffer struct. Contains an 802.11 +* data frame. +* p80211_hdr points to the 802.11 header for the packet. +* Returns: +* 0 Success and more buffs available +* 1 Success but no more buffs +* 2 Allocation failure +* 4 Buffer full or queue busy +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +int hfa384x_drvr_txframe(hfa384x_t *hw, struct sk_buff *skb, + union p80211_hdr *p80211_hdr, + struct p80211_metawep *p80211_wep) +{ + int usbpktlen = sizeof(hfa384x_tx_frame_t); + int result; + int ret; + char *ptr; + + if (hw->tx_urb.status == -EINPROGRESS) { + netdev_warn(hw->wlandev->netdev, "TX URB already in use\n"); + result = 3; + goto exit; + } + + /* Build Tx frame structure */ + /* Set up the control field */ + memset(&hw->txbuff.txfrm.desc, 0, sizeof(hw->txbuff.txfrm.desc)); + + /* Setup the usb type field */ + hw->txbuff.type = cpu_to_le16(HFA384x_USB_TXFRM); + + /* Set up the sw_support field to identify this frame */ + hw->txbuff.txfrm.desc.sw_support = 0x0123; + +/* Tx complete and Tx exception disable per dleach. Might be causing + * buf depletion + */ +/* #define DOEXC SLP -- doboth breaks horribly under load, doexc less so. */ +#if defined(DOBOTH) + hw->txbuff.txfrm.desc.tx_control = + HFA384x_TX_MACPORT_SET(0) | HFA384x_TX_STRUCTYPE_SET(1) | + HFA384x_TX_TXEX_SET(1) | HFA384x_TX_TXOK_SET(1); +#elif defined(DOEXC) + hw->txbuff.txfrm.desc.tx_control = + HFA384x_TX_MACPORT_SET(0) | HFA384x_TX_STRUCTYPE_SET(1) | + HFA384x_TX_TXEX_SET(1) | HFA384x_TX_TXOK_SET(0); +#else + hw->txbuff.txfrm.desc.tx_control = + HFA384x_TX_MACPORT_SET(0) | HFA384x_TX_STRUCTYPE_SET(1) | + HFA384x_TX_TXEX_SET(0) | HFA384x_TX_TXOK_SET(0); +#endif + hw->txbuff.txfrm.desc.tx_control = + cpu_to_le16(hw->txbuff.txfrm.desc.tx_control); + + /* copy the header over to the txdesc */ + memcpy(&(hw->txbuff.txfrm.desc.frame_control), p80211_hdr, + sizeof(union p80211_hdr)); + + /* if we're using host WEP, increase size by IV+ICV */ + if (p80211_wep->data) { + hw->txbuff.txfrm.desc.data_len = cpu_to_le16(skb->len + 8); + usbpktlen += 8; + } else { + hw->txbuff.txfrm.desc.data_len = cpu_to_le16(skb->len); + } + + usbpktlen += skb->len; + + /* copy over the WEP IV if we are using host WEP */ + ptr = hw->txbuff.txfrm.data; + if (p80211_wep->data) { + memcpy(ptr, p80211_wep->iv, sizeof(p80211_wep->iv)); + ptr += sizeof(p80211_wep->iv); + memcpy(ptr, p80211_wep->data, skb->len); + } else { + memcpy(ptr, skb->data, skb->len); + } + /* copy over the packet data */ + ptr += skb->len; + + /* copy over the WEP ICV if we are using host WEP */ + if (p80211_wep->data) + memcpy(ptr, p80211_wep->icv, sizeof(p80211_wep->icv)); + + /* Send the USB packet */ + usb_fill_bulk_urb(&(hw->tx_urb), hw->usb, + hw->endp_out, + &(hw->txbuff), ROUNDUP64(usbpktlen), + hfa384x_usbout_callback, hw->wlandev); + hw->tx_urb.transfer_flags |= USB_QUEUE_BULK; + + result = 1; + ret = submit_tx_urb(hw, &hw->tx_urb, GFP_ATOMIC); + if (ret != 0) { + netdev_err(hw->wlandev->netdev, + "submit_tx_urb() failed, error=%d\n", ret); + result = 3; + } + +exit: + return result; +} + +void hfa384x_tx_timeout(wlandevice_t *wlandev) +{ + hfa384x_t *hw = wlandev->priv; + unsigned long flags; + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + if (!hw->wlandev->hwremoved) { + int sched; + + sched = !test_and_set_bit(WORK_TX_HALT, &hw->usb_flags); + sched |= !test_and_set_bit(WORK_RX_HALT, &hw->usb_flags); + if (sched) + schedule_work(&hw->usb_work); + } + + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); +} + +/*---------------------------------------------------------------- +* hfa384x_usbctlx_reaper_task +* +* Tasklet to delete dead CTLX objects +* +* Arguments: +* data ptr to a hfa384x_t +* +* Returns: +* +* Call context: +* Interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbctlx_reaper_task(unsigned long data) +{ + hfa384x_t *hw = (hfa384x_t *)data; + struct list_head *entry; + struct list_head *temp; + unsigned long flags; + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* This list is guaranteed to be empty if someone + * has unplugged the adapter. + */ + list_for_each_safe(entry, temp, &hw->ctlxq.reapable) { + hfa384x_usbctlx_t *ctlx; + + ctlx = list_entry(entry, hfa384x_usbctlx_t, list); + list_del(&ctlx->list); + kfree(ctlx); + } + + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); +} + +/*---------------------------------------------------------------- +* hfa384x_usbctlx_completion_task +* +* Tasklet to call completion handlers for returned CTLXs +* +* Arguments: +* data ptr to hfa384x_t +* +* Returns: +* Nothing +* +* Call context: +* Interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbctlx_completion_task(unsigned long data) +{ + hfa384x_t *hw = (hfa384x_t *)data; + struct list_head *entry; + struct list_head *temp; + unsigned long flags; + + int reap = 0; + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* This list is guaranteed to be empty if someone + * has unplugged the adapter ... + */ + list_for_each_safe(entry, temp, &hw->ctlxq.completing) { + hfa384x_usbctlx_t *ctlx; + + ctlx = list_entry(entry, hfa384x_usbctlx_t, list); + + /* Call the completion function that this + * command was assigned, assuming it has one. + */ + if (ctlx->cmdcb != NULL) { + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + ctlx->cmdcb(hw, ctlx); + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* Make sure we don't try and complete + * this CTLX more than once! + */ + ctlx->cmdcb = NULL; + + /* Did someone yank the adapter out + * while our list was (briefly) unlocked? + */ + if (hw->wlandev->hwremoved) { + reap = 0; + break; + } + } + + /* + * "Reapable" CTLXs are ones which don't have any + * threads waiting for them to die. Hence they must + * be delivered to The Reaper! + */ + if (ctlx->reapable) { + /* Move the CTLX off the "completing" list (hopefully) + * on to the "reapable" list where the reaper task + * can find it. And "reapable" means that this CTLX + * isn't sitting on a wait-queue somewhere. + */ + list_move_tail(&ctlx->list, &hw->ctlxq.reapable); + reap = 1; + } + + complete(&ctlx->done); + } + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + + if (reap) + tasklet_schedule(&hw->reaper_bh); +} + +/*---------------------------------------------------------------- +* unlocked_usbctlx_cancel_async +* +* Mark the CTLX dead asynchronously, and ensure that the +* next command on the queue is run afterwards. +* +* Arguments: +* hw ptr to the hfa384x_t structure +* ctlx ptr to a CTLX structure +* +* Returns: +* 0 the CTLX's URB is inactive +* -EINPROGRESS the URB is currently being unlinked +* +* Call context: +* Either process or interrupt, but presumably interrupt +----------------------------------------------------------------*/ +static int unlocked_usbctlx_cancel_async(hfa384x_t *hw, + hfa384x_usbctlx_t *ctlx) +{ + int ret; + + /* + * Try to delete the URB containing our request packet. + * If we succeed, then its completion handler will be + * called with a status of -ECONNRESET. + */ + hw->ctlx_urb.transfer_flags |= URB_ASYNC_UNLINK; + ret = usb_unlink_urb(&hw->ctlx_urb); + + if (ret != -EINPROGRESS) { + /* + * The OUT URB had either already completed + * or was still in the pending queue, so the + * URB's completion function will not be called. + * We will have to complete the CTLX ourselves. + */ + ctlx->state = CTLX_REQ_FAILED; + unlocked_usbctlx_complete(hw, ctlx); + ret = 0; + } + + return ret; +} + +/*---------------------------------------------------------------- +* unlocked_usbctlx_complete +* +* A CTLX has completed. It may have been successful, it may not +* have been. At this point, the CTLX should be quiescent. The URBs +* aren't active and the timers should have been stopped. +* +* The CTLX is migrated to the "completing" queue, and the completing +* tasklet is scheduled. +* +* Arguments: +* hw ptr to a hfa384x_t structure +* ctlx ptr to a ctlx structure +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* Either, assume interrupt +----------------------------------------------------------------*/ +static void unlocked_usbctlx_complete(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx) +{ + /* Timers have been stopped, and ctlx should be in + * a terminal state. Retire it from the "active" + * queue. + */ + list_move_tail(&ctlx->list, &hw->ctlxq.completing); + tasklet_schedule(&hw->completion_bh); + + switch (ctlx->state) { + case CTLX_COMPLETE: + case CTLX_REQ_FAILED: + /* This are the correct terminating states. */ + break; + + default: + netdev_err(hw->wlandev->netdev, "CTLX[%d] not in a terminating state(%s)\n", + le16_to_cpu(ctlx->outbuf.type), + ctlxstr(ctlx->state)); + break; + } /* switch */ +} + +/*---------------------------------------------------------------- +* hfa384x_usbctlxq_run +* +* Checks to see if the head item is running. If not, starts it. +* +* Arguments: +* hw ptr to hfa384x_t +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* any +----------------------------------------------------------------*/ +static void hfa384x_usbctlxq_run(hfa384x_t *hw) +{ + unsigned long flags; + + /* acquire lock */ + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* Only one active CTLX at any one time, because there's no + * other (reliable) way to match the response URB to the + * correct CTLX. + * + * Don't touch any of these CTLXs if the hardware + * has been removed or the USB subsystem is stalled. + */ + if (!list_empty(&hw->ctlxq.active) || + test_bit(WORK_TX_HALT, &hw->usb_flags) || hw->wlandev->hwremoved) + goto unlock; + + while (!list_empty(&hw->ctlxq.pending)) { + hfa384x_usbctlx_t *head; + int result; + + /* This is the first pending command */ + head = list_entry(hw->ctlxq.pending.next, + hfa384x_usbctlx_t, list); + + /* We need to split this off to avoid a race condition */ + list_move_tail(&head->list, &hw->ctlxq.active); + + /* Fill the out packet */ + usb_fill_bulk_urb(&(hw->ctlx_urb), hw->usb, + hw->endp_out, + &(head->outbuf), ROUNDUP64(head->outbufsize), + hfa384x_ctlxout_callback, hw); + hw->ctlx_urb.transfer_flags |= USB_QUEUE_BULK; + + /* Now submit the URB and update the CTLX's state */ + result = SUBMIT_URB(&hw->ctlx_urb, GFP_ATOMIC); + if (result == 0) { + /* This CTLX is now running on the active queue */ + head->state = CTLX_REQ_SUBMITTED; + + /* Start the OUT wait timer */ + hw->req_timer_done = 0; + hw->reqtimer.expires = jiffies + HZ; + add_timer(&hw->reqtimer); + + /* Start the IN wait timer */ + hw->resp_timer_done = 0; + hw->resptimer.expires = jiffies + 2 * HZ; + add_timer(&hw->resptimer); + + break; + } + + if (result == -EPIPE) { + /* The OUT pipe needs resetting, so put + * this CTLX back in the "pending" queue + * and schedule a reset ... + */ + netdev_warn(hw->wlandev->netdev, + "%s tx pipe stalled: requesting reset\n", + hw->wlandev->netdev->name); + list_move(&head->list, &hw->ctlxq.pending); + set_bit(WORK_TX_HALT, &hw->usb_flags); + schedule_work(&hw->usb_work); + break; + } + + if (result == -ESHUTDOWN) { + netdev_warn(hw->wlandev->netdev, "%s urb shutdown!\n", + hw->wlandev->netdev->name); + break; + } + + netdev_err(hw->wlandev->netdev, "Failed to submit CTLX[%d]: error=%d\n", + le16_to_cpu(head->outbuf.type), result); + unlocked_usbctlx_complete(hw, head); + } /* while */ + +unlock: + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); +} + +/*---------------------------------------------------------------- +* hfa384x_usbin_callback +* +* Callback for URBs on the BULKIN endpoint. +* +* Arguments: +* urb ptr to the completed urb +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbin_callback(struct urb *urb) +{ + wlandevice_t *wlandev = urb->context; + hfa384x_t *hw; + hfa384x_usbin_t *usbin = (hfa384x_usbin_t *)urb->transfer_buffer; + struct sk_buff *skb = NULL; + int result; + int urb_status; + u16 type; + + enum USBIN_ACTION { + HANDLE, + RESUBMIT, + ABORT + } action; + + if (!wlandev || !wlandev->netdev || wlandev->hwremoved) + goto exit; + + hw = wlandev->priv; + if (!hw) + goto exit; + + skb = hw->rx_urb_skb; + BUG_ON(!skb || (skb->data != urb->transfer_buffer)); + + hw->rx_urb_skb = NULL; + + /* Check for error conditions within the URB */ + switch (urb->status) { + case 0: + action = HANDLE; + + /* Check for short packet */ + if (urb->actual_length == 0) { + wlandev->netdev->stats.rx_errors++; + wlandev->netdev->stats.rx_length_errors++; + action = RESUBMIT; + } + break; + + case -EPIPE: + netdev_warn(hw->wlandev->netdev, "%s rx pipe stalled: requesting reset\n", + wlandev->netdev->name); + if (!test_and_set_bit(WORK_RX_HALT, &hw->usb_flags)) + schedule_work(&hw->usb_work); + wlandev->netdev->stats.rx_errors++; + action = ABORT; + break; + + case -EILSEQ: + case -ETIMEDOUT: + case -EPROTO: + if (!test_and_set_bit(THROTTLE_RX, &hw->usb_flags) && + !timer_pending(&hw->throttle)) { + mod_timer(&hw->throttle, jiffies + THROTTLE_JIFFIES); + } + wlandev->netdev->stats.rx_errors++; + action = ABORT; + break; + + case -EOVERFLOW: + wlandev->netdev->stats.rx_over_errors++; + action = RESUBMIT; + break; + + case -ENODEV: + case -ESHUTDOWN: + pr_debug("status=%d, device removed.\n", urb->status); + action = ABORT; + break; + + case -ENOENT: + case -ECONNRESET: + pr_debug("status=%d, urb explicitly unlinked.\n", urb->status); + action = ABORT; + break; + + default: + pr_debug("urb status=%d, transfer flags=0x%x\n", + urb->status, urb->transfer_flags); + wlandev->netdev->stats.rx_errors++; + action = RESUBMIT; + break; + } + + urb_status = urb->status; + + if (action != ABORT) { + /* Repost the RX URB */ + result = submit_rx_urb(hw, GFP_ATOMIC); + + if (result != 0) { + netdev_err(hw->wlandev->netdev, + "Fatal, failed to resubmit rx_urb. error=%d\n", + result); + } + } + + /* Handle any USB-IN packet */ + /* Note: the check of the sw_support field, the type field doesn't + * have bit 12 set like the docs suggest. + */ + type = le16_to_cpu(usbin->type); + if (HFA384x_USB_ISRXFRM(type)) { + if (action == HANDLE) { + if (usbin->txfrm.desc.sw_support == 0x0123) { + hfa384x_usbin_txcompl(wlandev, usbin); + } else { + skb_put(skb, sizeof(*usbin)); + hfa384x_usbin_rx(wlandev, skb); + skb = NULL; + } + } + goto exit; + } + if (HFA384x_USB_ISTXFRM(type)) { + if (action == HANDLE) + hfa384x_usbin_txcompl(wlandev, usbin); + goto exit; + } + switch (type) { + case HFA384x_USB_INFOFRM: + if (action == ABORT) + goto exit; + if (action == HANDLE) + hfa384x_usbin_info(wlandev, usbin); + break; + + case HFA384x_USB_CMDRESP: + case HFA384x_USB_WRIDRESP: + case HFA384x_USB_RRIDRESP: + case HFA384x_USB_WMEMRESP: + case HFA384x_USB_RMEMRESP: + /* ALWAYS, ALWAYS, ALWAYS handle this CTLX!!!! */ + hfa384x_usbin_ctlx(hw, usbin, urb_status); + break; + + case HFA384x_USB_BUFAVAIL: + pr_debug("Received BUFAVAIL packet, frmlen=%d\n", + usbin->bufavail.frmlen); + break; + + case HFA384x_USB_ERROR: + pr_debug("Received USB_ERROR packet, errortype=%d\n", + usbin->usberror.errortype); + break; + + default: + pr_debug("Unrecognized USBIN packet, type=%x, status=%d\n", + usbin->type, urb_status); + break; + } /* switch */ + +exit: + + if (skb) + dev_kfree_skb(skb); +} + +/*---------------------------------------------------------------- +* hfa384x_usbin_ctlx +* +* We've received a URB containing a Prism2 "response" message. +* This message needs to be matched up with a CTLX on the active +* queue and our state updated accordingly. +* +* Arguments: +* hw ptr to hfa384x_t +* usbin ptr to USB IN packet +* urb_status status of this Bulk-In URB +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbin_ctlx(hfa384x_t *hw, hfa384x_usbin_t *usbin, + int urb_status) +{ + hfa384x_usbctlx_t *ctlx; + int run_queue = 0; + unsigned long flags; + +retry: + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* There can be only one CTLX on the active queue + * at any one time, and this is the CTLX that the + * timers are waiting for. + */ + if (list_empty(&hw->ctlxq.active)) + goto unlock; + + /* Remove the "response timeout". It's possible that + * we are already too late, and that the timeout is + * already running. And that's just too bad for us, + * because we could lose our CTLX from the active + * queue here ... + */ + if (del_timer(&hw->resptimer) == 0) { + if (hw->resp_timer_done == 0) { + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + goto retry; + } + } else { + hw->resp_timer_done = 1; + } + + ctlx = get_active_ctlx(hw); + + if (urb_status != 0) { + /* + * Bad CTLX, so get rid of it. But we only + * remove it from the active queue if we're no + * longer expecting the OUT URB to complete. + */ + if (unlocked_usbctlx_cancel_async(hw, ctlx) == 0) + run_queue = 1; + } else { + const __le16 intype = (usbin->type & ~cpu_to_le16(0x8000)); + + /* + * Check that our message is what we're expecting ... + */ + if (ctlx->outbuf.type != intype) { + netdev_warn(hw->wlandev->netdev, + "Expected IN[%d], received IN[%d] - ignored.\n", + le16_to_cpu(ctlx->outbuf.type), + le16_to_cpu(intype)); + goto unlock; + } + + /* This URB has succeeded, so grab the data ... */ + memcpy(&ctlx->inbuf, usbin, sizeof(ctlx->inbuf)); + + switch (ctlx->state) { + case CTLX_REQ_SUBMITTED: + /* + * We have received our response URB before + * our request has been acknowledged. Odd, + * but our OUT URB is still alive... + */ + pr_debug("Causality violation: please reboot Universe\n"); + ctlx->state = CTLX_RESP_COMPLETE; + break; + + case CTLX_REQ_COMPLETE: + /* + * This is the usual path: our request + * has already been acknowledged, and + * now we have received the reply too. + */ + ctlx->state = CTLX_COMPLETE; + unlocked_usbctlx_complete(hw, ctlx); + run_queue = 1; + break; + + default: + /* + * Throw this CTLX away ... + */ + netdev_err(hw->wlandev->netdev, + "Matched IN URB, CTLX[%d] in invalid state(%s). Discarded.\n", + le16_to_cpu(ctlx->outbuf.type), + ctlxstr(ctlx->state)); + if (unlocked_usbctlx_cancel_async(hw, ctlx) == 0) + run_queue = 1; + break; + } /* switch */ + } + +unlock: + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + + if (run_queue) + hfa384x_usbctlxq_run(hw); +} + +/*---------------------------------------------------------------- +* hfa384x_usbin_txcompl +* +* At this point we have the results of a previous transmit. +* +* Arguments: +* wlandev wlan device +* usbin ptr to the usb transfer buffer +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbin_txcompl(wlandevice_t *wlandev, + hfa384x_usbin_t *usbin) +{ + u16 status; + + status = le16_to_cpu(usbin->type); /* yeah I know it says type... */ + + /* Was there an error? */ + if (HFA384x_TXSTATUS_ISERROR(status)) + prism2sta_ev_txexc(wlandev, status); + else + prism2sta_ev_tx(wlandev, status); +} + +/*---------------------------------------------------------------- +* hfa384x_usbin_rx +* +* At this point we have a successful received a rx frame packet. +* +* Arguments: +* wlandev wlan device +* usbin ptr to the usb transfer buffer +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbin_rx(wlandevice_t *wlandev, struct sk_buff *skb) +{ + hfa384x_usbin_t *usbin = (hfa384x_usbin_t *)skb->data; + hfa384x_t *hw = wlandev->priv; + int hdrlen; + struct p80211_rxmeta *rxmeta; + u16 data_len; + u16 fc; + + /* Byte order convert once up front. */ + usbin->rxfrm.desc.status = le16_to_cpu(usbin->rxfrm.desc.status); + usbin->rxfrm.desc.time = le32_to_cpu(usbin->rxfrm.desc.time); + + /* Now handle frame based on port# */ + switch (HFA384x_RXSTATUS_MACPORT_GET(usbin->rxfrm.desc.status)) { + case 0: + fc = le16_to_cpu(usbin->rxfrm.desc.frame_control); + + /* If exclude and we receive an unencrypted, drop it */ + if ((wlandev->hostwep & HOSTWEP_EXCLUDEUNENCRYPTED) && + !WLAN_GET_FC_ISWEP(fc)) { + break; + } + + data_len = le16_to_cpu(usbin->rxfrm.desc.data_len); + + /* How much header data do we have? */ + hdrlen = p80211_headerlen(fc); + + /* Pull off the descriptor */ + skb_pull(skb, sizeof(hfa384x_rx_frame_t)); + + /* Now shunt the header block up against the data block + * with an "overlapping" copy + */ + memmove(skb_push(skb, hdrlen), + &usbin->rxfrm.desc.frame_control, hdrlen); + + skb->dev = wlandev->netdev; + skb->dev->last_rx = jiffies; + + /* And set the frame length properly */ + skb_trim(skb, data_len + hdrlen); + + /* The prism2 series does not return the CRC */ + memset(skb_put(skb, WLAN_CRC_LEN), 0xff, WLAN_CRC_LEN); + + skb_reset_mac_header(skb); + + /* Attach the rxmeta, set some stuff */ + p80211skb_rxmeta_attach(wlandev, skb); + rxmeta = P80211SKB_RXMETA(skb); + rxmeta->mactime = usbin->rxfrm.desc.time; + rxmeta->rxrate = usbin->rxfrm.desc.rate; + rxmeta->signal = usbin->rxfrm.desc.signal - hw->dbmadjust; + rxmeta->noise = usbin->rxfrm.desc.silence - hw->dbmadjust; + + prism2sta_ev_rx(wlandev, skb); + + break; + + case 7: + if (!HFA384x_RXSTATUS_ISFCSERR(usbin->rxfrm.desc.status)) { + /* Copy to wlansnif skb */ + hfa384x_int_rxmonitor(wlandev, &usbin->rxfrm); + dev_kfree_skb(skb); + } else { + pr_debug("Received monitor frame: FCSerr set\n"); + } + break; + + default: + netdev_warn(hw->wlandev->netdev, "Received frame on unsupported port=%d\n", + HFA384x_RXSTATUS_MACPORT_GET( + usbin->rxfrm.desc.status)); + break; + } +} + +/*---------------------------------------------------------------- +* hfa384x_int_rxmonitor +* +* Helper function for int_rx. Handles monitor frames. +* Note that this function allocates space for the FCS and sets it +* to 0xffffffff. The hfa384x doesn't give us the FCS value but the +* higher layers expect it. 0xffffffff is used as a flag to indicate +* the FCS is bogus. +* +* Arguments: +* wlandev wlan device structure +* rxfrm rx descriptor read from card in int_rx +* +* Returns: +* nothing +* +* Side effects: +* Allocates an skb and passes it up via the PF_PACKET interface. +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_int_rxmonitor(wlandevice_t *wlandev, + hfa384x_usb_rxfrm_t *rxfrm) +{ + hfa384x_rx_frame_t *rxdesc = &(rxfrm->desc); + unsigned int hdrlen = 0; + unsigned int datalen = 0; + unsigned int skblen = 0; + u8 *datap; + u16 fc; + struct sk_buff *skb; + hfa384x_t *hw = wlandev->priv; + + /* Remember the status, time, and data_len fields are in host order */ + /* Figure out how big the frame is */ + fc = le16_to_cpu(rxdesc->frame_control); + hdrlen = p80211_headerlen(fc); + datalen = le16_to_cpu(rxdesc->data_len); + + /* Allocate an ind message+framesize skb */ + skblen = sizeof(struct p80211_caphdr) + hdrlen + datalen + WLAN_CRC_LEN; + + /* sanity check the length */ + if (skblen > + (sizeof(struct p80211_caphdr) + + WLAN_HDR_A4_LEN + WLAN_DATA_MAXLEN + WLAN_CRC_LEN)) { + pr_debug("overlen frm: len=%zd\n", + skblen - sizeof(struct p80211_caphdr)); + } + + skb = dev_alloc_skb(skblen); + if (skb == NULL) + return; + + /* only prepend the prism header if in the right mode */ + if ((wlandev->netdev->type == ARPHRD_IEEE80211_PRISM) && + (hw->sniffhdr != 0)) { + struct p80211_caphdr *caphdr; + /* The NEW header format! */ + datap = skb_put(skb, sizeof(struct p80211_caphdr)); + caphdr = (struct p80211_caphdr *)datap; + + caphdr->version = htonl(P80211CAPTURE_VERSION); + caphdr->length = htonl(sizeof(struct p80211_caphdr)); + caphdr->mactime = __cpu_to_be64(rxdesc->time) * 1000; + caphdr->hosttime = __cpu_to_be64(jiffies); + caphdr->phytype = htonl(4); /* dss_dot11_b */ + caphdr->channel = htonl(hw->sniff_channel); + caphdr->datarate = htonl(rxdesc->rate); + caphdr->antenna = htonl(0); /* unknown */ + caphdr->priority = htonl(0); /* unknown */ + caphdr->ssi_type = htonl(3); /* rssi_raw */ + caphdr->ssi_signal = htonl(rxdesc->signal); + caphdr->ssi_noise = htonl(rxdesc->silence); + caphdr->preamble = htonl(0); /* unknown */ + caphdr->encoding = htonl(1); /* cck */ + } + + /* Copy the 802.11 header to the skb + (ctl frames may be less than a full header) */ + datap = skb_put(skb, hdrlen); + memcpy(datap, &(rxdesc->frame_control), hdrlen); + + /* If any, copy the data from the card to the skb */ + if (datalen > 0) { + datap = skb_put(skb, datalen); + memcpy(datap, rxfrm->data, datalen); + + /* check for unencrypted stuff if WEP bit set. */ + if (*(datap - hdrlen + 1) & 0x40) /* wep set */ + if ((*(datap) == 0xaa) && (*(datap + 1) == 0xaa)) + /* clear wep; it's the 802.2 header! */ + *(datap - hdrlen + 1) &= 0xbf; + } + + if (hw->sniff_fcs) { + /* Set the FCS */ + datap = skb_put(skb, WLAN_CRC_LEN); + memset(datap, 0xff, WLAN_CRC_LEN); + } + + /* pass it back up */ + prism2sta_ev_rx(wlandev, skb); +} + +/*---------------------------------------------------------------- +* hfa384x_usbin_info +* +* At this point we have a successful received a Prism2 info frame. +* +* Arguments: +* wlandev wlan device +* usbin ptr to the usb transfer buffer +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbin_info(wlandevice_t *wlandev, hfa384x_usbin_t *usbin) +{ + usbin->infofrm.info.framelen = + le16_to_cpu(usbin->infofrm.info.framelen); + prism2sta_ev_info(wlandev, &usbin->infofrm.info); +} + +/*---------------------------------------------------------------- +* hfa384x_usbout_callback +* +* Callback for URBs on the BULKOUT endpoint. +* +* Arguments: +* urb ptr to the completed urb +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbout_callback(struct urb *urb) +{ + wlandevice_t *wlandev = urb->context; + hfa384x_usbout_t *usbout = urb->transfer_buffer; + +#ifdef DEBUG_USB + dbprint_urb(urb); +#endif + + if (wlandev && wlandev->netdev) { + switch (urb->status) { + case 0: + hfa384x_usbout_tx(wlandev, usbout); + break; + + case -EPIPE: + { + hfa384x_t *hw = wlandev->priv; + + netdev_warn(hw->wlandev->netdev, + "%s tx pipe stalled: requesting reset\n", + wlandev->netdev->name); + if (!test_and_set_bit + (WORK_TX_HALT, &hw->usb_flags)) + schedule_work(&hw->usb_work); + wlandev->netdev->stats.tx_errors++; + break; + } + + case -EPROTO: + case -ETIMEDOUT: + case -EILSEQ: + { + hfa384x_t *hw = wlandev->priv; + + if (!test_and_set_bit + (THROTTLE_TX, &hw->usb_flags) && + !timer_pending(&hw->throttle)) { + mod_timer(&hw->throttle, + jiffies + THROTTLE_JIFFIES); + } + wlandev->netdev->stats.tx_errors++; + netif_stop_queue(wlandev->netdev); + break; + } + + case -ENOENT: + case -ESHUTDOWN: + /* Ignorable errors */ + break; + + default: + netdev_info(wlandev->netdev, "unknown urb->status=%d\n", + urb->status); + wlandev->netdev->stats.tx_errors++; + break; + } /* switch */ + } +} + +/*---------------------------------------------------------------- +* hfa384x_ctlxout_callback +* +* Callback for control data on the BULKOUT endpoint. +* +* Arguments: +* urb ptr to the completed urb +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_ctlxout_callback(struct urb *urb) +{ + hfa384x_t *hw = urb->context; + int delete_resptimer = 0; + int timer_ok = 1; + int run_queue = 0; + hfa384x_usbctlx_t *ctlx; + unsigned long flags; + + pr_debug("urb->status=%d\n", urb->status); +#ifdef DEBUG_USB + dbprint_urb(urb); +#endif + if ((urb->status == -ESHUTDOWN) || + (urb->status == -ENODEV) || (hw == NULL)) + return; + +retry: + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* + * Only one CTLX at a time on the "active" list, and + * none at all if we are unplugged. However, we can + * rely on the disconnect function to clean everything + * up if someone unplugged the adapter. + */ + if (list_empty(&hw->ctlxq.active)) { + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + return; + } + + /* + * Having something on the "active" queue means + * that we have timers to worry about ... + */ + if (del_timer(&hw->reqtimer) == 0) { + if (hw->req_timer_done == 0) { + /* + * This timer was actually running while we + * were trying to delete it. Let it terminate + * gracefully instead. + */ + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + goto retry; + } + } else { + hw->req_timer_done = 1; + } + + ctlx = get_active_ctlx(hw); + + if (urb->status == 0) { + /* Request portion of a CTLX is successful */ + switch (ctlx->state) { + case CTLX_REQ_SUBMITTED: + /* This OUT-ACK received before IN */ + ctlx->state = CTLX_REQ_COMPLETE; + break; + + case CTLX_RESP_COMPLETE: + /* IN already received before this OUT-ACK, + * so this command must now be complete. + */ + ctlx->state = CTLX_COMPLETE; + unlocked_usbctlx_complete(hw, ctlx); + run_queue = 1; + break; + + default: + /* This is NOT a valid CTLX "success" state! */ + netdev_err(hw->wlandev->netdev, + "Illegal CTLX[%d] success state(%s, %d) in OUT URB\n", + le16_to_cpu(ctlx->outbuf.type), + ctlxstr(ctlx->state), urb->status); + break; + } /* switch */ + } else { + /* If the pipe has stalled then we need to reset it */ + if ((urb->status == -EPIPE) && + !test_and_set_bit(WORK_TX_HALT, &hw->usb_flags)) { + netdev_warn(hw->wlandev->netdev, + "%s tx pipe stalled: requesting reset\n", + hw->wlandev->netdev->name); + schedule_work(&hw->usb_work); + } + + /* If someone cancels the OUT URB then its status + * should be either -ECONNRESET or -ENOENT. + */ + ctlx->state = CTLX_REQ_FAILED; + unlocked_usbctlx_complete(hw, ctlx); + delete_resptimer = 1; + run_queue = 1; + } + +delresp: + if (delete_resptimer) { + timer_ok = del_timer(&hw->resptimer); + if (timer_ok != 0) + hw->resp_timer_done = 1; + } + + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + + if (!timer_ok && (hw->resp_timer_done == 0)) { + spin_lock_irqsave(&hw->ctlxq.lock, flags); + goto delresp; + } + + if (run_queue) + hfa384x_usbctlxq_run(hw); +} + +/*---------------------------------------------------------------- +* hfa384x_usbctlx_reqtimerfn +* +* Timer response function for CTLX request timeouts. If this +* function is called, it means that the callback for the OUT +* URB containing a Prism2.x XXX_Request was never called. +* +* Arguments: +* data a ptr to the hfa384x_t +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbctlx_reqtimerfn(unsigned long data) +{ + hfa384x_t *hw = (hfa384x_t *)data; + unsigned long flags; + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + hw->req_timer_done = 1; + + /* Removing the hardware automatically empties + * the active list ... + */ + if (!list_empty(&hw->ctlxq.active)) { + /* + * We must ensure that our URB is removed from + * the system, if it hasn't already expired. + */ + hw->ctlx_urb.transfer_flags |= URB_ASYNC_UNLINK; + if (usb_unlink_urb(&hw->ctlx_urb) == -EINPROGRESS) { + hfa384x_usbctlx_t *ctlx = get_active_ctlx(hw); + + ctlx->state = CTLX_REQ_FAILED; + + /* This URB was active, but has now been + * cancelled. It will now have a status of + * -ECONNRESET in the callback function. + * + * We are cancelling this CTLX, so we're + * not going to need to wait for a response. + * The URB's callback function will check + * that this timer is truly dead. + */ + if (del_timer(&hw->resptimer) != 0) + hw->resp_timer_done = 1; + } + } + + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); +} + +/*---------------------------------------------------------------- +* hfa384x_usbctlx_resptimerfn +* +* Timer response function for CTLX response timeouts. If this +* function is called, it means that the callback for the IN +* URB containing a Prism2.x XXX_Response was never called. +* +* Arguments: +* data a ptr to the hfa384x_t +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbctlx_resptimerfn(unsigned long data) +{ + hfa384x_t *hw = (hfa384x_t *)data; + unsigned long flags; + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + hw->resp_timer_done = 1; + + /* The active list will be empty if the + * adapter has been unplugged ... + */ + if (!list_empty(&hw->ctlxq.active)) { + hfa384x_usbctlx_t *ctlx = get_active_ctlx(hw); + + if (unlocked_usbctlx_cancel_async(hw, ctlx) == 0) { + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + hfa384x_usbctlxq_run(hw); + return; + } + } + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); +} + +/*---------------------------------------------------------------- +* hfa384x_usb_throttlefn +* +* +* Arguments: +* data ptr to hw +* +* Returns: +* Nothing +* +* Side effects: +* +* Call context: +* Interrupt +----------------------------------------------------------------*/ +static void hfa384x_usb_throttlefn(unsigned long data) +{ + hfa384x_t *hw = (hfa384x_t *)data; + unsigned long flags; + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + /* + * We need to check BOTH the RX and the TX throttle controls, + * so we use the bitwise OR instead of the logical OR. + */ + pr_debug("flags=0x%lx\n", hw->usb_flags); + if (!hw->wlandev->hwremoved && + ((test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) && + !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags)) + | + (test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) && + !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags)) + )) { + schedule_work(&hw->usb_work); + } + + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); +} + +/*---------------------------------------------------------------- +* hfa384x_usbctlx_submit +* +* Called from the doxxx functions to submit a CTLX to the queue +* +* Arguments: +* hw ptr to the hw struct +* ctlx ctlx structure to enqueue +* +* Returns: +* -ENODEV if the adapter is unplugged +* 0 +* +* Side effects: +* +* Call context: +* process or interrupt +----------------------------------------------------------------*/ +static int hfa384x_usbctlx_submit(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx) +{ + unsigned long flags; + + spin_lock_irqsave(&hw->ctlxq.lock, flags); + + if (hw->wlandev->hwremoved) { + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + return -ENODEV; + } + + ctlx->state = CTLX_PENDING; + list_add_tail(&ctlx->list, &hw->ctlxq.pending); + spin_unlock_irqrestore(&hw->ctlxq.lock, flags); + hfa384x_usbctlxq_run(hw); + + return 0; +} + +/*---------------------------------------------------------------- +* hfa384x_usbout_tx +* +* At this point we have finished a send of a frame. Mark the URB +* as available and call ev_alloc to notify higher layers we're +* ready for more. +* +* Arguments: +* wlandev wlan device +* usbout ptr to the usb transfer buffer +* +* Returns: +* nothing +* +* Side effects: +* +* Call context: +* interrupt +----------------------------------------------------------------*/ +static void hfa384x_usbout_tx(wlandevice_t *wlandev, hfa384x_usbout_t *usbout) +{ + prism2sta_ev_alloc(wlandev); +} + +/*---------------------------------------------------------------- +* hfa384x_isgood_pdrcore +* +* Quick check of PDR codes. +* +* Arguments: +* pdrcode PDR code number (host order) +* +* Returns: +* zero not good. +* one is good. +* +* Side effects: +* +* Call context: +----------------------------------------------------------------*/ +static int hfa384x_isgood_pdrcode(u16 pdrcode) +{ + switch (pdrcode) { + case HFA384x_PDR_END_OF_PDA: + case HFA384x_PDR_PCB_PARTNUM: + case HFA384x_PDR_PDAVER: + case HFA384x_PDR_NIC_SERIAL: + case HFA384x_PDR_MKK_MEASUREMENTS: + case HFA384x_PDR_NIC_RAMSIZE: + case HFA384x_PDR_MFISUPRANGE: + case HFA384x_PDR_CFISUPRANGE: + case HFA384x_PDR_NICID: + case HFA384x_PDR_MAC_ADDRESS: + case HFA384x_PDR_REGDOMAIN: + case HFA384x_PDR_ALLOWED_CHANNEL: + case HFA384x_PDR_DEFAULT_CHANNEL: + case HFA384x_PDR_TEMPTYPE: + case HFA384x_PDR_IFR_SETTING: + case HFA384x_PDR_RFR_SETTING: + case HFA384x_PDR_HFA3861_BASELINE: + case HFA384x_PDR_HFA3861_SHADOW: + case HFA384x_PDR_HFA3861_IFRF: + case HFA384x_PDR_HFA3861_CHCALSP: + case HFA384x_PDR_HFA3861_CHCALI: + case HFA384x_PDR_3842_NIC_CONFIG: + case HFA384x_PDR_USB_ID: + case HFA384x_PDR_PCI_ID: + case HFA384x_PDR_PCI_IFCONF: + case HFA384x_PDR_PCI_PMCONF: + case HFA384x_PDR_RFENRGY: + case HFA384x_PDR_HFA3861_MANF_TESTSP: + case HFA384x_PDR_HFA3861_MANF_TESTI: + /* code is OK */ + return 1; + default: + if (pdrcode < 0x1000) { + /* code is OK, but we don't know exactly what it is */ + pr_debug("Encountered unknown PDR#=0x%04x, assuming it's ok.\n", + pdrcode); + return 1; + } + break; + } + /* bad code */ + pr_debug("Encountered unknown PDR#=0x%04x, (>=0x1000), assuming it's bad.\n", + pdrcode); + return 0; +} |