Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Kalle Valo | 4551 | 94.67% | 11 | 28.21% |
Mohammed Shafi Shajakhan | 67 | 1.39% | 4 | 10.26% |
Tetsuo Handa | 66 | 1.37% | 1 | 2.56% |
Vasanthakumar Thiagarajan | 23 | 0.48% | 3 | 7.69% |
Hui Peng | 20 | 0.42% | 1 | 2.56% |
Ray Chen | 18 | 0.37% | 2 | 5.13% |
Johan Hovold | 12 | 0.25% | 2 | 5.13% |
André Apitzsch | 9 | 0.19% | 1 | 2.56% |
Bala Shanmugam | 9 | 0.19% | 1 | 2.56% |
Jouni Malinen | 7 | 0.15% | 1 | 2.56% |
Jessica Wu | 4 | 0.08% | 1 | 2.56% |
Sage Sharp | 3 | 0.06% | 1 | 2.56% |
Andrei Epure | 3 | 0.06% | 1 | 2.56% |
Paul Gortmaker | 3 | 0.06% | 1 | 2.56% |
Himangi Saraogi | 2 | 0.04% | 1 | 2.56% |
Marina Makienko | 2 | 0.04% | 1 | 2.56% |
Linus Torvalds | 2 | 0.04% | 1 | 2.56% |
Vivek Natarajan | 2 | 0.04% | 1 | 2.56% |
Julien Massot | 2 | 0.04% | 2 | 5.13% |
Arvind Yadav | 1 | 0.02% | 1 | 2.56% |
Kieran Bingham | 1 | 0.02% | 1 | 2.56% |
Total | 4807 | 39 |
/* * Copyright (c) 2007-2011 Atheros Communications Inc. * Copyright (c) 2011-2012 Qualcomm Atheros, Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <linux/module.h> #include <linux/usb.h> #include "debug.h" #include "core.h" /* constants */ #define TX_URB_COUNT 32 #define RX_URB_COUNT 32 #define ATH6KL_USB_RX_BUFFER_SIZE 4096 /* tx/rx pipes for usb */ enum ATH6KL_USB_PIPE_ID { ATH6KL_USB_PIPE_TX_CTRL = 0, ATH6KL_USB_PIPE_TX_DATA_LP, ATH6KL_USB_PIPE_TX_DATA_MP, ATH6KL_USB_PIPE_TX_DATA_HP, ATH6KL_USB_PIPE_RX_CTRL, ATH6KL_USB_PIPE_RX_DATA, ATH6KL_USB_PIPE_RX_DATA2, ATH6KL_USB_PIPE_RX_INT, ATH6KL_USB_PIPE_MAX }; #define ATH6KL_USB_PIPE_INVALID ATH6KL_USB_PIPE_MAX struct ath6kl_usb_pipe { struct list_head urb_list_head; struct usb_anchor urb_submitted; u32 urb_alloc; u32 urb_cnt; u32 urb_cnt_thresh; unsigned int usb_pipe_handle; u32 flags; u8 ep_address; u8 logical_pipe_num; struct ath6kl_usb *ar_usb; u16 max_packet_size; struct work_struct io_complete_work; struct sk_buff_head io_comp_queue; struct usb_endpoint_descriptor *ep_desc; }; #define ATH6KL_USB_PIPE_FLAG_TX (1 << 0) /* usb device object */ struct ath6kl_usb { /* protects pipe->urb_list_head and pipe->urb_cnt */ spinlock_t cs_lock; struct usb_device *udev; struct usb_interface *interface; struct ath6kl_usb_pipe pipes[ATH6KL_USB_PIPE_MAX]; u8 *diag_cmd_buffer; u8 *diag_resp_buffer; struct ath6kl *ar; struct workqueue_struct *wq; }; /* usb urb object */ struct ath6kl_urb_context { struct list_head link; struct ath6kl_usb_pipe *pipe; struct sk_buff *skb; struct ath6kl *ar; }; /* USB endpoint definitions */ #define ATH6KL_USB_EP_ADDR_APP_CTRL_IN 0x81 #define ATH6KL_USB_EP_ADDR_APP_DATA_IN 0x82 #define ATH6KL_USB_EP_ADDR_APP_DATA2_IN 0x83 #define ATH6KL_USB_EP_ADDR_APP_INT_IN 0x84 #define ATH6KL_USB_EP_ADDR_APP_CTRL_OUT 0x01 #define ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT 0x02 #define ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT 0x03 #define ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT 0x04 /* diagnostic command defnitions */ #define ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD 1 #define ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP 2 #define ATH6KL_USB_CONTROL_REQ_DIAG_CMD 3 #define ATH6KL_USB_CONTROL_REQ_DIAG_RESP 4 #define ATH6KL_USB_CTRL_DIAG_CC_READ 0 #define ATH6KL_USB_CTRL_DIAG_CC_WRITE 1 struct ath6kl_usb_ctrl_diag_cmd_write { __le32 cmd; __le32 address; __le32 value; __le32 _pad[1]; } __packed; struct ath6kl_usb_ctrl_diag_cmd_read { __le32 cmd; __le32 address; } __packed; struct ath6kl_usb_ctrl_diag_resp_read { __le32 value; } __packed; /* function declarations */ static void ath6kl_usb_recv_complete(struct urb *urb); #define ATH6KL_USB_IS_BULK_EP(attr) (((attr) & 3) == 0x02) #define ATH6KL_USB_IS_INT_EP(attr) (((attr) & 3) == 0x03) #define ATH6KL_USB_IS_ISOC_EP(attr) (((attr) & 3) == 0x01) #define ATH6KL_USB_IS_DIR_IN(addr) ((addr) & 0x80) /* pipe/urb operations */ static struct ath6kl_urb_context * ath6kl_usb_alloc_urb_from_pipe(struct ath6kl_usb_pipe *pipe) { struct ath6kl_urb_context *urb_context = NULL; unsigned long flags; /* bail if this pipe is not initialized */ if (!pipe->ar_usb) return NULL; spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags); if (!list_empty(&pipe->urb_list_head)) { urb_context = list_first_entry(&pipe->urb_list_head, struct ath6kl_urb_context, link); list_del(&urb_context->link); pipe->urb_cnt--; } spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags); return urb_context; } static void ath6kl_usb_free_urb_to_pipe(struct ath6kl_usb_pipe *pipe, struct ath6kl_urb_context *urb_context) { unsigned long flags; /* bail if this pipe is not initialized */ if (!pipe->ar_usb) return; spin_lock_irqsave(&pipe->ar_usb->cs_lock, flags); pipe->urb_cnt++; list_add(&urb_context->link, &pipe->urb_list_head); spin_unlock_irqrestore(&pipe->ar_usb->cs_lock, flags); } static void ath6kl_usb_cleanup_recv_urb(struct ath6kl_urb_context *urb_context) { dev_kfree_skb(urb_context->skb); urb_context->skb = NULL; ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context); } static inline struct ath6kl_usb *ath6kl_usb_priv(struct ath6kl *ar) { return ar->hif_priv; } /* pipe resource allocation/cleanup */ static int ath6kl_usb_alloc_pipe_resources(struct ath6kl_usb_pipe *pipe, int urb_cnt) { struct ath6kl_urb_context *urb_context; int status = 0, i; INIT_LIST_HEAD(&pipe->urb_list_head); init_usb_anchor(&pipe->urb_submitted); for (i = 0; i < urb_cnt; i++) { urb_context = kzalloc(sizeof(struct ath6kl_urb_context), GFP_KERNEL); if (urb_context == NULL) { status = -ENOMEM; goto fail_alloc_pipe_resources; } urb_context->pipe = pipe; /* * we are only allocate the urb contexts here, the actual URB * is allocated from the kernel as needed to do a transaction */ pipe->urb_alloc++; ath6kl_usb_free_urb_to_pipe(pipe, urb_context); } ath6kl_dbg(ATH6KL_DBG_USB, "ath6kl usb: alloc resources lpipe:%d hpipe:0x%X urbs:%d\n", pipe->logical_pipe_num, pipe->usb_pipe_handle, pipe->urb_alloc); fail_alloc_pipe_resources: return status; } static void ath6kl_usb_free_pipe_resources(struct ath6kl_usb_pipe *pipe) { struct ath6kl_urb_context *urb_context; if (pipe->ar_usb == NULL) { /* nothing allocated for this pipe */ return; } ath6kl_dbg(ATH6KL_DBG_USB, "ath6kl usb: free resources lpipe:%d" "hpipe:0x%X urbs:%d avail:%d\n", pipe->logical_pipe_num, pipe->usb_pipe_handle, pipe->urb_alloc, pipe->urb_cnt); if (pipe->urb_alloc != pipe->urb_cnt) { ath6kl_dbg(ATH6KL_DBG_USB, "ath6kl usb: urb leak! lpipe:%d" "hpipe:0x%X urbs:%d avail:%d\n", pipe->logical_pipe_num, pipe->usb_pipe_handle, pipe->urb_alloc, pipe->urb_cnt); } while (true) { urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe); if (urb_context == NULL) break; kfree(urb_context); } } static void ath6kl_usb_cleanup_pipe_resources(struct ath6kl_usb *ar_usb) { int i; for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) ath6kl_usb_free_pipe_resources(&ar_usb->pipes[i]); } static u8 ath6kl_usb_get_logical_pipe_num(struct ath6kl_usb *ar_usb, u8 ep_address, int *urb_count) { u8 pipe_num = ATH6KL_USB_PIPE_INVALID; switch (ep_address) { case ATH6KL_USB_EP_ADDR_APP_CTRL_IN: pipe_num = ATH6KL_USB_PIPE_RX_CTRL; *urb_count = RX_URB_COUNT; break; case ATH6KL_USB_EP_ADDR_APP_DATA_IN: pipe_num = ATH6KL_USB_PIPE_RX_DATA; *urb_count = RX_URB_COUNT; break; case ATH6KL_USB_EP_ADDR_APP_INT_IN: pipe_num = ATH6KL_USB_PIPE_RX_INT; *urb_count = RX_URB_COUNT; break; case ATH6KL_USB_EP_ADDR_APP_DATA2_IN: pipe_num = ATH6KL_USB_PIPE_RX_DATA2; *urb_count = RX_URB_COUNT; break; case ATH6KL_USB_EP_ADDR_APP_CTRL_OUT: pipe_num = ATH6KL_USB_PIPE_TX_CTRL; *urb_count = TX_URB_COUNT; break; case ATH6KL_USB_EP_ADDR_APP_DATA_LP_OUT: pipe_num = ATH6KL_USB_PIPE_TX_DATA_LP; *urb_count = TX_URB_COUNT; break; case ATH6KL_USB_EP_ADDR_APP_DATA_MP_OUT: pipe_num = ATH6KL_USB_PIPE_TX_DATA_MP; *urb_count = TX_URB_COUNT; break; case ATH6KL_USB_EP_ADDR_APP_DATA_HP_OUT: pipe_num = ATH6KL_USB_PIPE_TX_DATA_HP; *urb_count = TX_URB_COUNT; break; default: /* note: there may be endpoints not currently used */ break; } return pipe_num; } static int ath6kl_usb_setup_pipe_resources(struct ath6kl_usb *ar_usb) { struct usb_interface *interface = ar_usb->interface; struct usb_host_interface *iface_desc = interface->cur_altsetting; struct usb_endpoint_descriptor *endpoint; struct ath6kl_usb_pipe *pipe; int i, urbcount, status = 0; u8 pipe_num; ath6kl_dbg(ATH6KL_DBG_USB, "setting up USB Pipes using interface\n"); /* walk descriptors and setup pipes */ for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { endpoint = &iface_desc->endpoint[i].desc; if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) { ath6kl_dbg(ATH6KL_DBG_USB, "%s Bulk Ep:0x%2.2X maxpktsz:%d\n", ATH6KL_USB_IS_DIR_IN (endpoint->bEndpointAddress) ? "RX" : "TX", endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize)); } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) { ath6kl_dbg(ATH6KL_DBG_USB, "%s Int Ep:0x%2.2X maxpktsz:%d interval:%d\n", ATH6KL_USB_IS_DIR_IN (endpoint->bEndpointAddress) ? "RX" : "TX", endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize), endpoint->bInterval); } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) { /* TODO for ISO */ ath6kl_dbg(ATH6KL_DBG_USB, "%s ISOC Ep:0x%2.2X maxpktsz:%d interval:%d\n", ATH6KL_USB_IS_DIR_IN (endpoint->bEndpointAddress) ? "RX" : "TX", endpoint->bEndpointAddress, le16_to_cpu(endpoint->wMaxPacketSize), endpoint->bInterval); } /* Ignore broken descriptors. */ if (usb_endpoint_maxp(endpoint) == 0) continue; urbcount = 0; pipe_num = ath6kl_usb_get_logical_pipe_num(ar_usb, endpoint->bEndpointAddress, &urbcount); if (pipe_num == ATH6KL_USB_PIPE_INVALID) continue; pipe = &ar_usb->pipes[pipe_num]; if (pipe->ar_usb != NULL) { /* hmmm..pipe was already setup */ continue; } pipe->ar_usb = ar_usb; pipe->logical_pipe_num = pipe_num; pipe->ep_address = endpoint->bEndpointAddress; pipe->max_packet_size = le16_to_cpu(endpoint->wMaxPacketSize); if (ATH6KL_USB_IS_BULK_EP(endpoint->bmAttributes)) { if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) { pipe->usb_pipe_handle = usb_rcvbulkpipe(ar_usb->udev, pipe->ep_address); } else { pipe->usb_pipe_handle = usb_sndbulkpipe(ar_usb->udev, pipe->ep_address); } } else if (ATH6KL_USB_IS_INT_EP(endpoint->bmAttributes)) { if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) { pipe->usb_pipe_handle = usb_rcvintpipe(ar_usb->udev, pipe->ep_address); } else { pipe->usb_pipe_handle = usb_sndintpipe(ar_usb->udev, pipe->ep_address); } } else if (ATH6KL_USB_IS_ISOC_EP(endpoint->bmAttributes)) { /* TODO for ISO */ if (ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) { pipe->usb_pipe_handle = usb_rcvisocpipe(ar_usb->udev, pipe->ep_address); } else { pipe->usb_pipe_handle = usb_sndisocpipe(ar_usb->udev, pipe->ep_address); } } pipe->ep_desc = endpoint; if (!ATH6KL_USB_IS_DIR_IN(pipe->ep_address)) pipe->flags |= ATH6KL_USB_PIPE_FLAG_TX; status = ath6kl_usb_alloc_pipe_resources(pipe, urbcount); if (status != 0) break; } return status; } /* pipe operations */ static void ath6kl_usb_post_recv_transfers(struct ath6kl_usb_pipe *recv_pipe, int buffer_length) { struct ath6kl_urb_context *urb_context; struct urb *urb; int usb_status; while (true) { urb_context = ath6kl_usb_alloc_urb_from_pipe(recv_pipe); if (urb_context == NULL) break; urb_context->skb = dev_alloc_skb(buffer_length); if (urb_context->skb == NULL) goto err_cleanup_urb; urb = usb_alloc_urb(0, GFP_ATOMIC); if (urb == NULL) goto err_cleanup_urb; usb_fill_bulk_urb(urb, recv_pipe->ar_usb->udev, recv_pipe->usb_pipe_handle, urb_context->skb->data, buffer_length, ath6kl_usb_recv_complete, urb_context); ath6kl_dbg(ATH6KL_DBG_USB_BULK, "ath6kl usb: bulk recv submit:%d, 0x%X (ep:0x%2.2X), %d bytes buf:0x%p\n", recv_pipe->logical_pipe_num, recv_pipe->usb_pipe_handle, recv_pipe->ep_address, buffer_length, urb_context->skb); usb_anchor_urb(urb, &recv_pipe->urb_submitted); usb_status = usb_submit_urb(urb, GFP_ATOMIC); if (usb_status) { ath6kl_dbg(ATH6KL_DBG_USB_BULK, "ath6kl usb : usb bulk recv failed %d\n", usb_status); usb_unanchor_urb(urb); usb_free_urb(urb); goto err_cleanup_urb; } usb_free_urb(urb); } return; err_cleanup_urb: ath6kl_usb_cleanup_recv_urb(urb_context); return; } static void ath6kl_usb_flush_all(struct ath6kl_usb *ar_usb) { int i; for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) { if (ar_usb->pipes[i].ar_usb != NULL) usb_kill_anchored_urbs(&ar_usb->pipes[i].urb_submitted); } /* * Flushing any pending I/O may schedule work this call will block * until all scheduled work runs to completion. */ flush_workqueue(ar_usb->wq); } static void ath6kl_usb_start_recv_pipes(struct ath6kl_usb *ar_usb) { /* * note: control pipe is no longer used * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_cnt_thresh = * ar_usb->pipes[ATH6KL_USB_PIPE_RX_CTRL].urb_alloc/2; * ath6kl_usb_post_recv_transfers(&ar_usb-> * pipes[ATH6KL_USB_PIPE_RX_CTRL], * ATH6KL_USB_RX_BUFFER_SIZE); */ ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA].urb_cnt_thresh = 1; ath6kl_usb_post_recv_transfers(&ar_usb->pipes[ATH6KL_USB_PIPE_RX_DATA], ATH6KL_USB_RX_BUFFER_SIZE); } /* hif usb rx/tx completion functions */ static void ath6kl_usb_recv_complete(struct urb *urb) { struct ath6kl_urb_context *urb_context = urb->context; struct ath6kl_usb_pipe *pipe = urb_context->pipe; struct sk_buff *skb = NULL; int status = 0; ath6kl_dbg(ATH6KL_DBG_USB_BULK, "%s: recv pipe: %d, stat:%d, len:%d urb:0x%p\n", __func__, pipe->logical_pipe_num, urb->status, urb->actual_length, urb); if (urb->status != 0) { status = -EIO; switch (urb->status) { case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: /* * no need to spew these errors when device * removed or urb killed due to driver shutdown */ status = -ECANCELED; break; default: ath6kl_dbg(ATH6KL_DBG_USB_BULK, "%s recv pipe: %d (ep:0x%2.2X), failed:%d\n", __func__, pipe->logical_pipe_num, pipe->ep_address, urb->status); break; } goto cleanup_recv_urb; } if (urb->actual_length == 0) goto cleanup_recv_urb; skb = urb_context->skb; /* we are going to pass it up */ urb_context->skb = NULL; skb_put(skb, urb->actual_length); /* note: queue implements a lock */ skb_queue_tail(&pipe->io_comp_queue, skb); queue_work(pipe->ar_usb->wq, &pipe->io_complete_work); cleanup_recv_urb: ath6kl_usb_cleanup_recv_urb(urb_context); if (status == 0 && pipe->urb_cnt >= pipe->urb_cnt_thresh) { /* our free urbs are piling up, post more transfers */ ath6kl_usb_post_recv_transfers(pipe, ATH6KL_USB_RX_BUFFER_SIZE); } } static void ath6kl_usb_usb_transmit_complete(struct urb *urb) { struct ath6kl_urb_context *urb_context = urb->context; struct ath6kl_usb_pipe *pipe = urb_context->pipe; struct sk_buff *skb; ath6kl_dbg(ATH6KL_DBG_USB_BULK, "%s: pipe: %d, stat:%d, len:%d\n", __func__, pipe->logical_pipe_num, urb->status, urb->actual_length); if (urb->status != 0) { ath6kl_dbg(ATH6KL_DBG_USB_BULK, "%s: pipe: %d, failed:%d\n", __func__, pipe->logical_pipe_num, urb->status); } skb = urb_context->skb; urb_context->skb = NULL; ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context); /* note: queue implements a lock */ skb_queue_tail(&pipe->io_comp_queue, skb); queue_work(pipe->ar_usb->wq, &pipe->io_complete_work); } static void ath6kl_usb_io_comp_work(struct work_struct *work) { struct ath6kl_usb_pipe *pipe = container_of(work, struct ath6kl_usb_pipe, io_complete_work); struct ath6kl_usb *ar_usb; struct sk_buff *skb; ar_usb = pipe->ar_usb; while ((skb = skb_dequeue(&pipe->io_comp_queue))) { if (pipe->flags & ATH6KL_USB_PIPE_FLAG_TX) { ath6kl_dbg(ATH6KL_DBG_USB_BULK, "ath6kl usb xmit callback buf:0x%p\n", skb); ath6kl_core_tx_complete(ar_usb->ar, skb); } else { ath6kl_dbg(ATH6KL_DBG_USB_BULK, "ath6kl usb recv callback buf:0x%p\n", skb); ath6kl_core_rx_complete(ar_usb->ar, skb, pipe->logical_pipe_num); } } } #define ATH6KL_USB_MAX_DIAG_CMD (sizeof(struct ath6kl_usb_ctrl_diag_cmd_write)) #define ATH6KL_USB_MAX_DIAG_RESP (sizeof(struct ath6kl_usb_ctrl_diag_resp_read)) static void ath6kl_usb_destroy(struct ath6kl_usb *ar_usb) { ath6kl_usb_flush_all(ar_usb); ath6kl_usb_cleanup_pipe_resources(ar_usb); usb_set_intfdata(ar_usb->interface, NULL); kfree(ar_usb->diag_cmd_buffer); kfree(ar_usb->diag_resp_buffer); destroy_workqueue(ar_usb->wq); kfree(ar_usb); } static struct ath6kl_usb *ath6kl_usb_create(struct usb_interface *interface) { struct usb_device *dev = interface_to_usbdev(interface); struct ath6kl_usb *ar_usb; struct ath6kl_usb_pipe *pipe; int status = 0; int i; /* ath6kl_usb_destroy() needs ar_usb != NULL && ar_usb->wq != NULL. */ ar_usb = kzalloc(sizeof(struct ath6kl_usb), GFP_KERNEL); if (ar_usb == NULL) return NULL; ar_usb->wq = alloc_workqueue("ath6kl_wq", 0, 0); if (!ar_usb->wq) { kfree(ar_usb); return NULL; } usb_set_intfdata(interface, ar_usb); spin_lock_init(&(ar_usb->cs_lock)); ar_usb->udev = dev; ar_usb->interface = interface; for (i = 0; i < ATH6KL_USB_PIPE_MAX; i++) { pipe = &ar_usb->pipes[i]; INIT_WORK(&pipe->io_complete_work, ath6kl_usb_io_comp_work); skb_queue_head_init(&pipe->io_comp_queue); } ar_usb->diag_cmd_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_CMD, GFP_KERNEL); if (ar_usb->diag_cmd_buffer == NULL) { status = -ENOMEM; goto fail_ath6kl_usb_create; } ar_usb->diag_resp_buffer = kzalloc(ATH6KL_USB_MAX_DIAG_RESP, GFP_KERNEL); if (ar_usb->diag_resp_buffer == NULL) { status = -ENOMEM; goto fail_ath6kl_usb_create; } status = ath6kl_usb_setup_pipe_resources(ar_usb); fail_ath6kl_usb_create: if (status != 0) { ath6kl_usb_destroy(ar_usb); ar_usb = NULL; } return ar_usb; } static void ath6kl_usb_device_detached(struct usb_interface *interface) { struct ath6kl_usb *ar_usb; ar_usb = usb_get_intfdata(interface); if (ar_usb == NULL) return; ath6kl_stop_txrx(ar_usb->ar); /* Delay to wait for the target to reboot */ mdelay(20); ath6kl_core_cleanup(ar_usb->ar); ath6kl_usb_destroy(ar_usb); } /* exported hif usb APIs for htc pipe */ static void hif_start(struct ath6kl *ar) { struct ath6kl_usb *device = ath6kl_usb_priv(ar); int i; ath6kl_usb_start_recv_pipes(device); /* set the TX resource avail threshold for each TX pipe */ for (i = ATH6KL_USB_PIPE_TX_CTRL; i <= ATH6KL_USB_PIPE_TX_DATA_HP; i++) { device->pipes[i].urb_cnt_thresh = device->pipes[i].urb_alloc / 2; } } static int ath6kl_usb_send(struct ath6kl *ar, u8 PipeID, struct sk_buff *hdr_skb, struct sk_buff *skb) { struct ath6kl_usb *device = ath6kl_usb_priv(ar); struct ath6kl_usb_pipe *pipe = &device->pipes[PipeID]; struct ath6kl_urb_context *urb_context; int usb_status, status = 0; struct urb *urb; u8 *data; u32 len; ath6kl_dbg(ATH6KL_DBG_USB_BULK, "+%s pipe : %d, buf:0x%p\n", __func__, PipeID, skb); urb_context = ath6kl_usb_alloc_urb_from_pipe(pipe); if (urb_context == NULL) { /* * TODO: it is possible to run out of urbs if * 2 endpoints map to the same pipe ID */ ath6kl_dbg(ATH6KL_DBG_USB_BULK, "%s pipe:%d no urbs left. URB Cnt : %d\n", __func__, PipeID, pipe->urb_cnt); status = -ENOMEM; goto fail_hif_send; } urb_context->skb = skb; data = skb->data; len = skb->len; urb = usb_alloc_urb(0, GFP_ATOMIC); if (urb == NULL) { status = -ENOMEM; ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context); goto fail_hif_send; } usb_fill_bulk_urb(urb, device->udev, pipe->usb_pipe_handle, data, len, ath6kl_usb_usb_transmit_complete, urb_context); if ((len % pipe->max_packet_size) == 0) { /* hit a max packet boundary on this pipe */ urb->transfer_flags |= URB_ZERO_PACKET; } ath6kl_dbg(ATH6KL_DBG_USB_BULK, "athusb bulk send submit:%d, 0x%X (ep:0x%2.2X), %d bytes\n", pipe->logical_pipe_num, pipe->usb_pipe_handle, pipe->ep_address, len); usb_anchor_urb(urb, &pipe->urb_submitted); usb_status = usb_submit_urb(urb, GFP_ATOMIC); if (usb_status) { ath6kl_dbg(ATH6KL_DBG_USB_BULK, "ath6kl usb : usb bulk transmit failed %d\n", usb_status); usb_unanchor_urb(urb); ath6kl_usb_free_urb_to_pipe(urb_context->pipe, urb_context); status = -EINVAL; } usb_free_urb(urb); fail_hif_send: return status; } static void hif_stop(struct ath6kl *ar) { struct ath6kl_usb *device = ath6kl_usb_priv(ar); ath6kl_usb_flush_all(device); } static void ath6kl_usb_get_default_pipe(struct ath6kl *ar, u8 *ul_pipe, u8 *dl_pipe) { *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL; *dl_pipe = ATH6KL_USB_PIPE_RX_CTRL; } static int ath6kl_usb_map_service_pipe(struct ath6kl *ar, u16 svc_id, u8 *ul_pipe, u8 *dl_pipe) { int status = 0; switch (svc_id) { case HTC_CTRL_RSVD_SVC: case WMI_CONTROL_SVC: *ul_pipe = ATH6KL_USB_PIPE_TX_CTRL; /* due to large control packets, shift to data pipe */ *dl_pipe = ATH6KL_USB_PIPE_RX_DATA; break; case WMI_DATA_BE_SVC: case WMI_DATA_BK_SVC: *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP; /* * Disable rxdata2 directly, it will be enabled * if FW enable rxdata2 */ *dl_pipe = ATH6KL_USB_PIPE_RX_DATA; break; case WMI_DATA_VI_SVC: if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, ar->fw_capabilities)) *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP; else *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP; /* * Disable rxdata2 directly, it will be enabled * if FW enable rxdata2 */ *dl_pipe = ATH6KL_USB_PIPE_RX_DATA; break; case WMI_DATA_VO_SVC: if (test_bit(ATH6KL_FW_CAPABILITY_MAP_LP_ENDPOINT, ar->fw_capabilities)) *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_LP; else *ul_pipe = ATH6KL_USB_PIPE_TX_DATA_MP; /* * Disable rxdata2 directly, it will be enabled * if FW enable rxdata2 */ *dl_pipe = ATH6KL_USB_PIPE_RX_DATA; break; default: status = -EPERM; break; } return status; } static u16 ath6kl_usb_get_free_queue_number(struct ath6kl *ar, u8 pipe_id) { struct ath6kl_usb *device = ath6kl_usb_priv(ar); return device->pipes[pipe_id].urb_cnt; } static void hif_detach_htc(struct ath6kl *ar) { struct ath6kl_usb *device = ath6kl_usb_priv(ar); ath6kl_usb_flush_all(device); } static int ath6kl_usb_submit_ctrl_out(struct ath6kl_usb *ar_usb, u8 req, u16 value, u16 index, void *data, u32 size) { u8 *buf = NULL; int ret; if (size > 0) { buf = kmemdup(data, size, GFP_KERNEL); if (buf == NULL) return -ENOMEM; } /* note: if successful returns number of bytes transfered */ ret = usb_control_msg(ar_usb->udev, usb_sndctrlpipe(ar_usb->udev, 0), req, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, buf, size, 1000); if (ret < 0) { ath6kl_warn("Failed to submit usb control message: %d\n", ret); kfree(buf); return ret; } kfree(buf); return 0; } static int ath6kl_usb_submit_ctrl_in(struct ath6kl_usb *ar_usb, u8 req, u16 value, u16 index, void *data, u32 size) { u8 *buf = NULL; int ret; if (size > 0) { buf = kmalloc(size, GFP_KERNEL); if (buf == NULL) return -ENOMEM; } /* note: if successful returns number of bytes transfered */ ret = usb_control_msg(ar_usb->udev, usb_rcvctrlpipe(ar_usb->udev, 0), req, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, value, index, buf, size, 2000); if (ret < 0) { ath6kl_warn("Failed to read usb control message: %d\n", ret); kfree(buf); return ret; } memcpy((u8 *) data, buf, size); kfree(buf); return 0; } static int ath6kl_usb_ctrl_msg_exchange(struct ath6kl_usb *ar_usb, u8 req_val, u8 *req_buf, u32 req_len, u8 resp_val, u8 *resp_buf, u32 *resp_len) { int ret; /* send command */ ret = ath6kl_usb_submit_ctrl_out(ar_usb, req_val, 0, 0, req_buf, req_len); if (ret != 0) return ret; if (resp_buf == NULL) { /* no expected response */ return ret; } /* get response */ ret = ath6kl_usb_submit_ctrl_in(ar_usb, resp_val, 0, 0, resp_buf, *resp_len); return ret; } static int ath6kl_usb_diag_read32(struct ath6kl *ar, u32 address, u32 *data) { struct ath6kl_usb *ar_usb = ar->hif_priv; struct ath6kl_usb_ctrl_diag_resp_read *resp; struct ath6kl_usb_ctrl_diag_cmd_read *cmd; u32 resp_len; int ret; cmd = (struct ath6kl_usb_ctrl_diag_cmd_read *) ar_usb->diag_cmd_buffer; memset(cmd, 0, sizeof(*cmd)); cmd->cmd = ATH6KL_USB_CTRL_DIAG_CC_READ; cmd->address = cpu_to_le32(address); resp_len = sizeof(*resp); ret = ath6kl_usb_ctrl_msg_exchange(ar_usb, ATH6KL_USB_CONTROL_REQ_DIAG_CMD, (u8 *) cmd, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write), ATH6KL_USB_CONTROL_REQ_DIAG_RESP, ar_usb->diag_resp_buffer, &resp_len); if (ret) { ath6kl_warn("diag read32 failed: %d\n", ret); return ret; } resp = (struct ath6kl_usb_ctrl_diag_resp_read *) ar_usb->diag_resp_buffer; *data = le32_to_cpu(resp->value); return ret; } static int ath6kl_usb_diag_write32(struct ath6kl *ar, u32 address, __le32 data) { struct ath6kl_usb *ar_usb = ar->hif_priv; struct ath6kl_usb_ctrl_diag_cmd_write *cmd; int ret; cmd = (struct ath6kl_usb_ctrl_diag_cmd_write *) ar_usb->diag_cmd_buffer; memset(cmd, 0, sizeof(struct ath6kl_usb_ctrl_diag_cmd_write)); cmd->cmd = cpu_to_le32(ATH6KL_USB_CTRL_DIAG_CC_WRITE); cmd->address = cpu_to_le32(address); cmd->value = data; ret = ath6kl_usb_ctrl_msg_exchange(ar_usb, ATH6KL_USB_CONTROL_REQ_DIAG_CMD, (u8 *) cmd, sizeof(*cmd), 0, NULL, NULL); if (ret) { ath6kl_warn("diag_write32 failed: %d\n", ret); return ret; } return 0; } static int ath6kl_usb_bmi_read(struct ath6kl *ar, u8 *buf, u32 len) { struct ath6kl_usb *ar_usb = ar->hif_priv; int ret; /* get response */ ret = ath6kl_usb_submit_ctrl_in(ar_usb, ATH6KL_USB_CONTROL_REQ_RECV_BMI_RESP, 0, 0, buf, len); if (ret) { ath6kl_err("Unable to read the bmi data from the device: %d\n", ret); return ret; } return 0; } static int ath6kl_usb_bmi_write(struct ath6kl *ar, u8 *buf, u32 len) { struct ath6kl_usb *ar_usb = ar->hif_priv; int ret; /* send command */ ret = ath6kl_usb_submit_ctrl_out(ar_usb, ATH6KL_USB_CONTROL_REQ_SEND_BMI_CMD, 0, 0, buf, len); if (ret) { ath6kl_err("unable to send the bmi data to the device: %d\n", ret); return ret; } return 0; } static int ath6kl_usb_power_on(struct ath6kl *ar) { hif_start(ar); return 0; } static int ath6kl_usb_power_off(struct ath6kl *ar) { hif_detach_htc(ar); return 0; } static void ath6kl_usb_stop(struct ath6kl *ar) { hif_stop(ar); } static void ath6kl_usb_cleanup_scatter(struct ath6kl *ar) { /* * USB doesn't support it. Just return. */ return; } static int ath6kl_usb_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow) { /* * cfg80211 suspend/WOW currently not supported for USB. */ return 0; } static int ath6kl_usb_resume(struct ath6kl *ar) { /* * cfg80211 resume currently not supported for USB. */ return 0; } static const struct ath6kl_hif_ops ath6kl_usb_ops = { .diag_read32 = ath6kl_usb_diag_read32, .diag_write32 = ath6kl_usb_diag_write32, .bmi_read = ath6kl_usb_bmi_read, .bmi_write = ath6kl_usb_bmi_write, .power_on = ath6kl_usb_power_on, .power_off = ath6kl_usb_power_off, .stop = ath6kl_usb_stop, .pipe_send = ath6kl_usb_send, .pipe_get_default = ath6kl_usb_get_default_pipe, .pipe_map_service = ath6kl_usb_map_service_pipe, .pipe_get_free_queue_number = ath6kl_usb_get_free_queue_number, .cleanup_scatter = ath6kl_usb_cleanup_scatter, .suspend = ath6kl_usb_suspend, .resume = ath6kl_usb_resume, }; /* ath6kl usb driver registered functions */ static int ath6kl_usb_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_device *dev = interface_to_usbdev(interface); struct ath6kl *ar; struct ath6kl_usb *ar_usb = NULL; int vendor_id, product_id; int ret = 0; usb_get_dev(dev); vendor_id = le16_to_cpu(dev->descriptor.idVendor); product_id = le16_to_cpu(dev->descriptor.idProduct); ath6kl_dbg(ATH6KL_DBG_USB, "vendor_id = %04x\n", vendor_id); ath6kl_dbg(ATH6KL_DBG_USB, "product_id = %04x\n", product_id); if (interface->cur_altsetting) ath6kl_dbg(ATH6KL_DBG_USB, "USB Interface %d\n", interface->cur_altsetting->desc.bInterfaceNumber); if (dev->speed == USB_SPEED_HIGH) ath6kl_dbg(ATH6KL_DBG_USB, "USB 2.0 Host\n"); else ath6kl_dbg(ATH6KL_DBG_USB, "USB 1.1 Host\n"); ar_usb = ath6kl_usb_create(interface); if (ar_usb == NULL) { ret = -ENOMEM; goto err_usb_put; } ar = ath6kl_core_create(&ar_usb->udev->dev); if (ar == NULL) { ath6kl_err("Failed to alloc ath6kl core\n"); ret = -ENOMEM; goto err_usb_destroy; } ar->hif_priv = ar_usb; ar->hif_type = ATH6KL_HIF_TYPE_USB; ar->hif_ops = &ath6kl_usb_ops; ar->mbox_info.block_size = 16; ar->bmi.max_data_size = 252; ar_usb->ar = ar; ret = ath6kl_core_init(ar, ATH6KL_HTC_TYPE_PIPE); if (ret) { ath6kl_err("Failed to init ath6kl core: %d\n", ret); goto err_core_free; } return ret; err_core_free: ath6kl_core_destroy(ar); err_usb_destroy: ath6kl_usb_destroy(ar_usb); err_usb_put: usb_put_dev(dev); return ret; } static void ath6kl_usb_remove(struct usb_interface *interface) { usb_put_dev(interface_to_usbdev(interface)); ath6kl_usb_device_detached(interface); } #ifdef CONFIG_PM static int ath6kl_usb_pm_suspend(struct usb_interface *interface, pm_message_t message) { struct ath6kl_usb *device; device = usb_get_intfdata(interface); ath6kl_usb_flush_all(device); return 0; } static int ath6kl_usb_pm_resume(struct usb_interface *interface) { struct ath6kl_usb *device; device = usb_get_intfdata(interface); ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA], ATH6KL_USB_RX_BUFFER_SIZE); ath6kl_usb_post_recv_transfers(&device->pipes[ATH6KL_USB_PIPE_RX_DATA2], ATH6KL_USB_RX_BUFFER_SIZE); return 0; } #else #define ath6kl_usb_pm_suspend NULL #define ath6kl_usb_pm_resume NULL #endif /* table of devices that work with this driver */ static const struct usb_device_id ath6kl_usb_ids[] = { {USB_DEVICE(0x0cf3, 0x9375)}, {USB_DEVICE(0x0cf3, 0x9374)}, {USB_DEVICE(0x04da, 0x390d)}, { /* Terminating entry */ }, }; MODULE_DEVICE_TABLE(usb, ath6kl_usb_ids); static struct usb_driver ath6kl_usb_driver = { .name = "ath6kl_usb", .probe = ath6kl_usb_probe, .suspend = ath6kl_usb_pm_suspend, .resume = ath6kl_usb_pm_resume, .disconnect = ath6kl_usb_remove, .id_table = ath6kl_usb_ids, .supports_autosuspend = true, .disable_hub_initiated_lpm = 1, }; module_usb_driver(ath6kl_usb_driver); MODULE_AUTHOR("Atheros Communications, Inc."); MODULE_DESCRIPTION("Driver support for Atheros AR600x USB devices"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_FIRMWARE(AR6004_HW_1_0_FIRMWARE_FILE); MODULE_FIRMWARE(AR6004_HW_1_0_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_0_DEFAULT_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_1_FIRMWARE_FILE); MODULE_FIRMWARE(AR6004_HW_1_1_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_1_DEFAULT_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_2_FIRMWARE_FILE); MODULE_FIRMWARE(AR6004_HW_1_2_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_2_DEFAULT_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_3_FW_DIR "/" AR6004_HW_1_3_FIRMWARE_FILE); MODULE_FIRMWARE(AR6004_HW_1_3_BOARD_DATA_FILE); MODULE_FIRMWARE(AR6004_HW_1_3_DEFAULT_BOARD_DATA_FILE);
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