| /* |
| * Copyright (c) 2011 Broadcom Corporation |
| * |
| * 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/kernel.h> |
| #include <linux/module.h> |
| #include <linux/firmware.h> |
| #include <linux/usb.h> |
| #include <linux/vmalloc.h> |
| |
| #include <brcmu_utils.h> |
| #include <brcm_hw_ids.h> |
| #include <brcmu_wifi.h> |
| #include "bus.h" |
| #include "debug.h" |
| #include "firmware.h" |
| #include "usb.h" |
| |
| |
| #define IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000) |
| |
| #define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */ |
| #define BRCMF_USB_RESET_GETVER_LOOP_CNT 10 |
| |
| #define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle |
| has boot up */ |
| #define BRCMF_USB_NRXQ 50 |
| #define BRCMF_USB_NTXQ 50 |
| |
| #define BRCMF_USB_CBCTL_WRITE 0 |
| #define BRCMF_USB_CBCTL_READ 1 |
| #define BRCMF_USB_MAX_PKT_SIZE 1600 |
| |
| BRCMF_FW_DEF(43143, "brcmfmac43143.bin"); |
| BRCMF_FW_DEF(43236B, "brcmfmac43236b.bin"); |
| BRCMF_FW_DEF(43242A, "brcmfmac43242a.bin"); |
| BRCMF_FW_DEF(43569, "brcmfmac43569.bin"); |
| |
| static struct brcmf_firmware_mapping brcmf_usb_fwnames[] = { |
| BRCMF_FW_ENTRY(BRCM_CC_43143_CHIP_ID, 0xFFFFFFFF, 43143), |
| BRCMF_FW_ENTRY(BRCM_CC_43235_CHIP_ID, 0x00000008, 43236B), |
| BRCMF_FW_ENTRY(BRCM_CC_43236_CHIP_ID, 0x00000008, 43236B), |
| BRCMF_FW_ENTRY(BRCM_CC_43238_CHIP_ID, 0x00000008, 43236B), |
| BRCMF_FW_ENTRY(BRCM_CC_43242_CHIP_ID, 0xFFFFFFFF, 43242A), |
| BRCMF_FW_ENTRY(BRCM_CC_43566_CHIP_ID, 0xFFFFFFFF, 43569), |
| BRCMF_FW_ENTRY(BRCM_CC_43569_CHIP_ID, 0xFFFFFFFF, 43569) |
| }; |
| |
| #define TRX_MAGIC 0x30524448 /* "HDR0" */ |
| #define TRX_MAX_OFFSET 3 /* Max number of file offsets */ |
| #define TRX_UNCOMP_IMAGE 0x20 /* Trx holds uncompressed img */ |
| #define TRX_RDL_CHUNK 1500 /* size of each dl transfer */ |
| #define TRX_OFFSETS_DLFWLEN_IDX 0 |
| |
| /* Control messages: bRequest values */ |
| #define DL_GETSTATE 0 /* returns the rdl_state_t struct */ |
| #define DL_CHECK_CRC 1 /* currently unused */ |
| #define DL_GO 2 /* execute downloaded image */ |
| #define DL_START 3 /* initialize dl state */ |
| #define DL_REBOOT 4 /* reboot the device in 2 seconds */ |
| #define DL_GETVER 5 /* returns the bootrom_id_t struct */ |
| #define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset |
| * event to occur in 2 seconds. It is the |
| * responsibility of the downloaded code to |
| * clear this event |
| */ |
| #define DL_EXEC 7 /* jump to a supplied address */ |
| #define DL_RESETCFG 8 /* To support single enum on dongle |
| * - Not used by bootloader |
| */ |
| #define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup |
| * if resp unavailable |
| */ |
| |
| /* states */ |
| #define DL_WAITING 0 /* waiting to rx first pkt */ |
| #define DL_READY 1 /* hdr was good, waiting for more of the |
| * compressed image |
| */ |
| #define DL_BAD_HDR 2 /* hdr was corrupted */ |
| #define DL_BAD_CRC 3 /* compressed image was corrupted */ |
| #define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */ |
| #define DL_START_FAIL 5 /* failed to initialize correctly */ |
| #define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM |
| * value |
| */ |
| #define DL_IMAGE_TOOBIG 7 /* firmware image too big */ |
| |
| |
| struct trx_header_le { |
| __le32 magic; /* "HDR0" */ |
| __le32 len; /* Length of file including header */ |
| __le32 crc32; /* CRC from flag_version to end of file */ |
| __le32 flag_version; /* 0:15 flags, 16:31 version */ |
| __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of |
| * header |
| */ |
| }; |
| |
| struct rdl_state_le { |
| __le32 state; |
| __le32 bytes; |
| }; |
| |
| struct bootrom_id_le { |
| __le32 chip; /* Chip id */ |
| __le32 chiprev; /* Chip rev */ |
| __le32 ramsize; /* Size of RAM */ |
| __le32 remapbase; /* Current remap base address */ |
| __le32 boardtype; /* Type of board */ |
| __le32 boardrev; /* Board revision */ |
| }; |
| |
| struct brcmf_usb_image { |
| struct list_head list; |
| s8 *fwname; |
| u8 *image; |
| int image_len; |
| }; |
| |
| struct brcmf_usbdev_info { |
| struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ |
| spinlock_t qlock; |
| struct list_head rx_freeq; |
| struct list_head rx_postq; |
| struct list_head tx_freeq; |
| struct list_head tx_postq; |
| uint rx_pipe, tx_pipe; |
| |
| int rx_low_watermark; |
| int tx_low_watermark; |
| int tx_high_watermark; |
| int tx_freecount; |
| bool tx_flowblock; |
| spinlock_t tx_flowblock_lock; |
| |
| struct brcmf_usbreq *tx_reqs; |
| struct brcmf_usbreq *rx_reqs; |
| |
| char fw_name[BRCMF_FW_NAME_LEN]; |
| const u8 *image; /* buffer for combine fw and nvram */ |
| int image_len; |
| |
| struct usb_device *usbdev; |
| struct device *dev; |
| struct mutex dev_init_lock; |
| |
| int ctl_in_pipe, ctl_out_pipe; |
| struct urb *ctl_urb; /* URB for control endpoint */ |
| struct usb_ctrlrequest ctl_write; |
| struct usb_ctrlrequest ctl_read; |
| u32 ctl_urb_actual_length; |
| int ctl_urb_status; |
| int ctl_completed; |
| wait_queue_head_t ioctl_resp_wait; |
| ulong ctl_op; |
| u8 ifnum; |
| |
| struct urb *bulk_urb; /* used for FW download */ |
| |
| bool wowl_enabled; |
| }; |
| |
| static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, |
| struct brcmf_usbreq *req); |
| |
| static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) |
| { |
| struct brcmf_bus *bus_if = dev_get_drvdata(dev); |
| return bus_if->bus_priv.usb; |
| } |
| |
| static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) |
| { |
| return brcmf_usb_get_buspub(dev)->devinfo; |
| } |
| |
| static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) |
| { |
| return wait_event_timeout(devinfo->ioctl_resp_wait, |
| devinfo->ctl_completed, IOCTL_RESP_TIMEOUT); |
| } |
| |
| static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) |
| { |
| wake_up(&devinfo->ioctl_resp_wait); |
| } |
| |
| static void |
| brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) |
| { |
| brcmf_dbg(USB, "Enter, status=%d\n", status); |
| |
| if (unlikely(devinfo == NULL)) |
| return; |
| |
| if (type == BRCMF_USB_CBCTL_READ) { |
| if (status == 0) |
| devinfo->bus_pub.stats.rx_ctlpkts++; |
| else |
| devinfo->bus_pub.stats.rx_ctlerrs++; |
| } else if (type == BRCMF_USB_CBCTL_WRITE) { |
| if (status == 0) |
| devinfo->bus_pub.stats.tx_ctlpkts++; |
| else |
| devinfo->bus_pub.stats.tx_ctlerrs++; |
| } |
| |
| devinfo->ctl_urb_status = status; |
| devinfo->ctl_completed = true; |
| brcmf_usb_ioctl_resp_wake(devinfo); |
| } |
| |
| static void |
| brcmf_usb_ctlread_complete(struct urb *urb) |
| { |
| struct brcmf_usbdev_info *devinfo = |
| (struct brcmf_usbdev_info *)urb->context; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| devinfo->ctl_urb_actual_length = urb->actual_length; |
| brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, |
| urb->status); |
| } |
| |
| static void |
| brcmf_usb_ctlwrite_complete(struct urb *urb) |
| { |
| struct brcmf_usbdev_info *devinfo = |
| (struct brcmf_usbdev_info *)urb->context; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, |
| urb->status); |
| } |
| |
| static int |
| brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) |
| { |
| int ret; |
| u16 size; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (devinfo == NULL || buf == NULL || |
| len == 0 || devinfo->ctl_urb == NULL) |
| return -EINVAL; |
| |
| size = len; |
| devinfo->ctl_write.wLength = cpu_to_le16p(&size); |
| devinfo->ctl_urb->transfer_buffer_length = size; |
| devinfo->ctl_urb_status = 0; |
| devinfo->ctl_urb_actual_length = 0; |
| |
| usb_fill_control_urb(devinfo->ctl_urb, |
| devinfo->usbdev, |
| devinfo->ctl_out_pipe, |
| (unsigned char *) &devinfo->ctl_write, |
| buf, size, |
| (usb_complete_t)brcmf_usb_ctlwrite_complete, |
| devinfo); |
| |
| ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); |
| if (ret < 0) |
| brcmf_err("usb_submit_urb failed %d\n", ret); |
| |
| return ret; |
| } |
| |
| static int |
| brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) |
| { |
| int ret; |
| u16 size; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if ((devinfo == NULL) || (buf == NULL) || (len == 0) |
| || (devinfo->ctl_urb == NULL)) |
| return -EINVAL; |
| |
| size = len; |
| devinfo->ctl_read.wLength = cpu_to_le16p(&size); |
| devinfo->ctl_urb->transfer_buffer_length = size; |
| |
| devinfo->ctl_read.bRequestType = USB_DIR_IN |
| | USB_TYPE_CLASS | USB_RECIP_INTERFACE; |
| devinfo->ctl_read.bRequest = 1; |
| |
| usb_fill_control_urb(devinfo->ctl_urb, |
| devinfo->usbdev, |
| devinfo->ctl_in_pipe, |
| (unsigned char *) &devinfo->ctl_read, |
| buf, size, |
| (usb_complete_t)brcmf_usb_ctlread_complete, |
| devinfo); |
| |
| ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); |
| if (ret < 0) |
| brcmf_err("usb_submit_urb failed %d\n", ret); |
| |
| return ret; |
| } |
| |
| static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) |
| { |
| int err = 0; |
| int timeout = 0; |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) |
| return -EIO; |
| |
| if (test_and_set_bit(0, &devinfo->ctl_op)) |
| return -EIO; |
| |
| devinfo->ctl_completed = false; |
| err = brcmf_usb_send_ctl(devinfo, buf, len); |
| if (err) { |
| brcmf_err("fail %d bytes: %d\n", err, len); |
| clear_bit(0, &devinfo->ctl_op); |
| return err; |
| } |
| timeout = brcmf_usb_ioctl_resp_wait(devinfo); |
| clear_bit(0, &devinfo->ctl_op); |
| if (!timeout) { |
| brcmf_err("Txctl wait timed out\n"); |
| err = -EIO; |
| } |
| return err; |
| } |
| |
| static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) |
| { |
| int err = 0; |
| int timeout = 0; |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) |
| return -EIO; |
| |
| if (test_and_set_bit(0, &devinfo->ctl_op)) |
| return -EIO; |
| |
| devinfo->ctl_completed = false; |
| err = brcmf_usb_recv_ctl(devinfo, buf, len); |
| if (err) { |
| brcmf_err("fail %d bytes: %d\n", err, len); |
| clear_bit(0, &devinfo->ctl_op); |
| return err; |
| } |
| timeout = brcmf_usb_ioctl_resp_wait(devinfo); |
| err = devinfo->ctl_urb_status; |
| clear_bit(0, &devinfo->ctl_op); |
| if (!timeout) { |
| brcmf_err("rxctl wait timed out\n"); |
| err = -EIO; |
| } |
| if (!err) |
| return devinfo->ctl_urb_actual_length; |
| else |
| return err; |
| } |
| |
| static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, |
| struct list_head *q, int *counter) |
| { |
| unsigned long flags; |
| struct brcmf_usbreq *req; |
| spin_lock_irqsave(&devinfo->qlock, flags); |
| if (list_empty(q)) { |
| spin_unlock_irqrestore(&devinfo->qlock, flags); |
| return NULL; |
| } |
| req = list_entry(q->next, struct brcmf_usbreq, list); |
| list_del_init(q->next); |
| if (counter) |
| (*counter)--; |
| spin_unlock_irqrestore(&devinfo->qlock, flags); |
| return req; |
| |
| } |
| |
| static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, |
| struct list_head *q, struct brcmf_usbreq *req, |
| int *counter) |
| { |
| unsigned long flags; |
| spin_lock_irqsave(&devinfo->qlock, flags); |
| list_add_tail(&req->list, q); |
| if (counter) |
| (*counter)++; |
| spin_unlock_irqrestore(&devinfo->qlock, flags); |
| } |
| |
| static struct brcmf_usbreq * |
| brcmf_usbdev_qinit(struct list_head *q, int qsize) |
| { |
| int i; |
| struct brcmf_usbreq *req, *reqs; |
| |
| reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); |
| if (reqs == NULL) |
| return NULL; |
| |
| req = reqs; |
| |
| for (i = 0; i < qsize; i++) { |
| req->urb = usb_alloc_urb(0, GFP_ATOMIC); |
| if (!req->urb) |
| goto fail; |
| |
| INIT_LIST_HEAD(&req->list); |
| list_add_tail(&req->list, q); |
| req++; |
| } |
| return reqs; |
| fail: |
| brcmf_err("fail!\n"); |
| while (!list_empty(q)) { |
| req = list_entry(q->next, struct brcmf_usbreq, list); |
| if (req) |
| usb_free_urb(req->urb); |
| list_del(q->next); |
| } |
| return NULL; |
| |
| } |
| |
| static void brcmf_usb_free_q(struct list_head *q, bool pending) |
| { |
| struct brcmf_usbreq *req, *next; |
| int i = 0; |
| list_for_each_entry_safe(req, next, q, list) { |
| if (!req->urb) { |
| brcmf_err("bad req\n"); |
| break; |
| } |
| i++; |
| if (pending) { |
| usb_kill_urb(req->urb); |
| } else { |
| usb_free_urb(req->urb); |
| list_del_init(&req->list); |
| } |
| } |
| } |
| |
| static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, |
| struct brcmf_usbreq *req) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&devinfo->qlock, flags); |
| list_del_init(&req->list); |
| spin_unlock_irqrestore(&devinfo->qlock, flags); |
| } |
| |
| |
| static void brcmf_usb_tx_complete(struct urb *urb) |
| { |
| struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; |
| struct brcmf_usbdev_info *devinfo = req->devinfo; |
| unsigned long flags; |
| |
| brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, |
| req->skb); |
| brcmf_usb_del_fromq(devinfo, req); |
| |
| brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0); |
| req->skb = NULL; |
| brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); |
| spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); |
| if (devinfo->tx_freecount > devinfo->tx_high_watermark && |
| devinfo->tx_flowblock) { |
| brcmf_txflowblock(devinfo->dev, false); |
| devinfo->tx_flowblock = false; |
| } |
| spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); |
| } |
| |
| static void brcmf_usb_rx_complete(struct urb *urb) |
| { |
| struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; |
| struct brcmf_usbdev_info *devinfo = req->devinfo; |
| struct sk_buff *skb; |
| |
| brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); |
| brcmf_usb_del_fromq(devinfo, req); |
| skb = req->skb; |
| req->skb = NULL; |
| |
| /* zero lenght packets indicate usb "failure". Do not refill */ |
| if (urb->status != 0 || !urb->actual_length) { |
| brcmu_pkt_buf_free_skb(skb); |
| brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); |
| return; |
| } |
| |
| if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) { |
| skb_put(skb, urb->actual_length); |
| brcmf_rx_frame(devinfo->dev, skb); |
| brcmf_usb_rx_refill(devinfo, req); |
| } else { |
| brcmu_pkt_buf_free_skb(skb); |
| brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); |
| } |
| return; |
| |
| } |
| |
| static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, |
| struct brcmf_usbreq *req) |
| { |
| struct sk_buff *skb; |
| int ret; |
| |
| if (!req || !devinfo) |
| return; |
| |
| skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); |
| if (!skb) { |
| brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); |
| return; |
| } |
| req->skb = skb; |
| |
| usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, |
| skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, |
| req); |
| req->devinfo = devinfo; |
| brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); |
| |
| ret = usb_submit_urb(req->urb, GFP_ATOMIC); |
| if (ret) { |
| brcmf_usb_del_fromq(devinfo, req); |
| brcmu_pkt_buf_free_skb(req->skb); |
| req->skb = NULL; |
| brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); |
| } |
| return; |
| } |
| |
| static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) |
| { |
| struct brcmf_usbreq *req; |
| |
| if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { |
| brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); |
| return; |
| } |
| while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) |
| brcmf_usb_rx_refill(devinfo, req); |
| } |
| |
| static void |
| brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) |
| { |
| struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; |
| int old_state; |
| |
| brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", |
| devinfo->bus_pub.state, state); |
| |
| if (devinfo->bus_pub.state == state) |
| return; |
| |
| old_state = devinfo->bus_pub.state; |
| devinfo->bus_pub.state = state; |
| |
| /* update state of upper layer */ |
| if (state == BRCMFMAC_USB_STATE_DOWN) { |
| brcmf_dbg(USB, "DBUS is down\n"); |
| brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); |
| } else if (state == BRCMFMAC_USB_STATE_UP) { |
| brcmf_dbg(USB, "DBUS is up\n"); |
| brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_UP); |
| } else { |
| brcmf_dbg(USB, "DBUS current state=%d\n", state); |
| } |
| } |
| |
| static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) |
| { |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); |
| struct brcmf_usbreq *req; |
| int ret; |
| unsigned long flags; |
| |
| brcmf_dbg(USB, "Enter, skb=%p\n", skb); |
| if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { |
| ret = -EIO; |
| goto fail; |
| } |
| |
| req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, |
| &devinfo->tx_freecount); |
| if (!req) { |
| brcmf_err("no req to send\n"); |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| req->skb = skb; |
| req->devinfo = devinfo; |
| usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, |
| skb->data, skb->len, brcmf_usb_tx_complete, req); |
| req->urb->transfer_flags |= URB_ZERO_PACKET; |
| brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); |
| ret = usb_submit_urb(req->urb, GFP_ATOMIC); |
| if (ret) { |
| brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); |
| brcmf_usb_del_fromq(devinfo, req); |
| req->skb = NULL; |
| brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, |
| &devinfo->tx_freecount); |
| goto fail; |
| } |
| |
| spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); |
| if (devinfo->tx_freecount < devinfo->tx_low_watermark && |
| !devinfo->tx_flowblock) { |
| brcmf_txflowblock(dev, true); |
| devinfo->tx_flowblock = true; |
| } |
| spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); |
| return 0; |
| |
| fail: |
| return ret; |
| } |
| |
| |
| static int brcmf_usb_up(struct device *dev) |
| { |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) |
| return 0; |
| |
| /* Success, indicate devinfo is fully up */ |
| brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); |
| |
| if (devinfo->ctl_urb) { |
| devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); |
| devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); |
| |
| /* CTL Write */ |
| devinfo->ctl_write.bRequestType = |
| USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; |
| devinfo->ctl_write.bRequest = 0; |
| devinfo->ctl_write.wValue = cpu_to_le16(0); |
| devinfo->ctl_write.wIndex = cpu_to_le16(devinfo->ifnum); |
| |
| /* CTL Read */ |
| devinfo->ctl_read.bRequestType = |
| USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; |
| devinfo->ctl_read.bRequest = 1; |
| devinfo->ctl_read.wValue = cpu_to_le16(0); |
| devinfo->ctl_read.wIndex = cpu_to_le16(devinfo->ifnum); |
| } |
| brcmf_usb_rx_fill_all(devinfo); |
| return 0; |
| } |
| |
| static void brcmf_cancel_all_urbs(struct brcmf_usbdev_info *devinfo) |
| { |
| if (devinfo->ctl_urb) |
| usb_kill_urb(devinfo->ctl_urb); |
| if (devinfo->bulk_urb) |
| usb_kill_urb(devinfo->bulk_urb); |
| brcmf_usb_free_q(&devinfo->tx_postq, true); |
| brcmf_usb_free_q(&devinfo->rx_postq, true); |
| } |
| |
| static void brcmf_usb_down(struct device *dev) |
| { |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (devinfo == NULL) |
| return; |
| |
| if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) |
| return; |
| |
| brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); |
| |
| brcmf_cancel_all_urbs(devinfo); |
| } |
| |
| static void |
| brcmf_usb_sync_complete(struct urb *urb) |
| { |
| struct brcmf_usbdev_info *devinfo = |
| (struct brcmf_usbdev_info *)urb->context; |
| |
| devinfo->ctl_completed = true; |
| brcmf_usb_ioctl_resp_wake(devinfo); |
| } |
| |
| static int brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, |
| void *buffer, int buflen) |
| { |
| int ret; |
| char *tmpbuf; |
| u16 size; |
| |
| if ((!devinfo) || (devinfo->ctl_urb == NULL)) |
| return -EINVAL; |
| |
| tmpbuf = kmalloc(buflen, GFP_ATOMIC); |
| if (!tmpbuf) |
| return -ENOMEM; |
| |
| size = buflen; |
| devinfo->ctl_urb->transfer_buffer_length = size; |
| |
| devinfo->ctl_read.wLength = cpu_to_le16p(&size); |
| devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | |
| USB_RECIP_INTERFACE; |
| devinfo->ctl_read.bRequest = cmd; |
| |
| usb_fill_control_urb(devinfo->ctl_urb, |
| devinfo->usbdev, |
| usb_rcvctrlpipe(devinfo->usbdev, 0), |
| (unsigned char *) &devinfo->ctl_read, |
| (void *) tmpbuf, size, |
| (usb_complete_t)brcmf_usb_sync_complete, devinfo); |
| |
| devinfo->ctl_completed = false; |
| ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); |
| if (ret < 0) { |
| brcmf_err("usb_submit_urb failed %d\n", ret); |
| goto finalize; |
| } |
| |
| if (!brcmf_usb_ioctl_resp_wait(devinfo)) { |
| usb_kill_urb(devinfo->ctl_urb); |
| ret = -ETIMEDOUT; |
| } else { |
| memcpy(buffer, tmpbuf, buflen); |
| } |
| |
| finalize: |
| kfree(tmpbuf); |
| return ret; |
| } |
| |
| static bool |
| brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) |
| { |
| struct bootrom_id_le id; |
| u32 chipid, chiprev; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| |
| if (devinfo == NULL) |
| return false; |
| |
| /* Check if firmware downloaded already by querying runtime ID */ |
| id.chip = cpu_to_le32(0xDEAD); |
| brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); |
| |
| chipid = le32_to_cpu(id.chip); |
| chiprev = le32_to_cpu(id.chiprev); |
| |
| if ((chipid & 0x4300) == 0x4300) |
| brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); |
| else |
| brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); |
| if (chipid == BRCMF_POSTBOOT_ID) { |
| brcmf_dbg(USB, "firmware already downloaded\n"); |
| brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); |
| return false; |
| } else { |
| devinfo->bus_pub.devid = chipid; |
| devinfo->bus_pub.chiprev = chiprev; |
| } |
| return true; |
| } |
| |
| static int |
| brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) |
| { |
| struct bootrom_id_le id; |
| u32 loop_cnt; |
| int err; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| |
| loop_cnt = 0; |
| do { |
| mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); |
| loop_cnt++; |
| id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ |
| err = brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); |
| if ((err) && (err != -ETIMEDOUT)) |
| return err; |
| if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) |
| break; |
| } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); |
| |
| if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { |
| brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", |
| le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); |
| |
| brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); |
| return 0; |
| } else { |
| brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", |
| BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); |
| return -EINVAL; |
| } |
| } |
| |
| |
| static int |
| brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) |
| { |
| int ret; |
| |
| if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) |
| return -EINVAL; |
| |
| /* Prepare the URB */ |
| usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, |
| devinfo->tx_pipe, buffer, len, |
| (usb_complete_t)brcmf_usb_sync_complete, devinfo); |
| |
| devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; |
| |
| devinfo->ctl_completed = false; |
| ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); |
| if (ret) { |
| brcmf_err("usb_submit_urb failed %d\n", ret); |
| return ret; |
| } |
| ret = brcmf_usb_ioctl_resp_wait(devinfo); |
| return (ret == 0); |
| } |
| |
| static int |
| brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) |
| { |
| unsigned int sendlen, sent, dllen; |
| char *bulkchunk = NULL, *dlpos; |
| struct rdl_state_le state; |
| u32 rdlstate, rdlbytes; |
| int err = 0; |
| |
| brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); |
| |
| bulkchunk = kmalloc(TRX_RDL_CHUNK, GFP_ATOMIC); |
| if (bulkchunk == NULL) { |
| err = -ENOMEM; |
| goto fail; |
| } |
| |
| /* 1) Prepare USB boot loader for runtime image */ |
| brcmf_usb_dl_cmd(devinfo, DL_START, &state, sizeof(state)); |
| |
| rdlstate = le32_to_cpu(state.state); |
| rdlbytes = le32_to_cpu(state.bytes); |
| |
| /* 2) Check we are in the Waiting state */ |
| if (rdlstate != DL_WAITING) { |
| brcmf_err("Failed to DL_START\n"); |
| err = -EINVAL; |
| goto fail; |
| } |
| sent = 0; |
| dlpos = fw; |
| dllen = fwlen; |
| |
| /* Get chip id and rev */ |
| while (rdlbytes != dllen) { |
| /* Wait until the usb device reports it received all |
| * the bytes we sent */ |
| if ((rdlbytes == sent) && (rdlbytes != dllen)) { |
| if ((dllen-sent) < TRX_RDL_CHUNK) |
| sendlen = dllen-sent; |
| else |
| sendlen = TRX_RDL_CHUNK; |
| |
| /* simply avoid having to send a ZLP by ensuring we |
| * never have an even |
| * multiple of 64 |
| */ |
| if (!(sendlen % 64)) |
| sendlen -= 4; |
| |
| /* send data */ |
| memcpy(bulkchunk, dlpos, sendlen); |
| if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, |
| sendlen)) { |
| brcmf_err("send_bulk failed\n"); |
| err = -EINVAL; |
| goto fail; |
| } |
| |
| dlpos += sendlen; |
| sent += sendlen; |
| } |
| err = brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, |
| sizeof(state)); |
| if (err) { |
| brcmf_err("DL_GETSTATE Failed\n"); |
| goto fail; |
| } |
| |
| rdlstate = le32_to_cpu(state.state); |
| rdlbytes = le32_to_cpu(state.bytes); |
| |
| /* restart if an error is reported */ |
| if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { |
| brcmf_err("Bad Hdr or Bad CRC state %d\n", |
| rdlstate); |
| err = -EINVAL; |
| goto fail; |
| } |
| } |
| |
| fail: |
| kfree(bulkchunk); |
| brcmf_dbg(USB, "Exit, err=%d\n", err); |
| return err; |
| } |
| |
| static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) |
| { |
| int err; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| |
| if (devinfo == NULL) |
| return -EINVAL; |
| |
| if (devinfo->bus_pub.devid == 0xDEAD) |
| return -EINVAL; |
| |
| err = brcmf_usb_dl_writeimage(devinfo, fw, len); |
| if (err == 0) |
| devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; |
| else |
| devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; |
| brcmf_dbg(USB, "Exit, err=%d\n", err); |
| |
| return err; |
| } |
| |
| static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) |
| { |
| struct rdl_state_le state; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (!devinfo) |
| return -EINVAL; |
| |
| if (devinfo->bus_pub.devid == 0xDEAD) |
| return -EINVAL; |
| |
| /* Check we are runnable */ |
| state.state = 0; |
| brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, sizeof(state)); |
| |
| /* Start the image */ |
| if (state.state == cpu_to_le32(DL_RUNNABLE)) { |
| if (brcmf_usb_dl_cmd(devinfo, DL_GO, &state, sizeof(state))) |
| return -ENODEV; |
| if (brcmf_usb_resetcfg(devinfo)) |
| return -ENODEV; |
| /* The Dongle may go for re-enumeration. */ |
| } else { |
| brcmf_err("Dongle not runnable\n"); |
| return -EINVAL; |
| } |
| brcmf_dbg(USB, "Exit\n"); |
| return 0; |
| } |
| |
| static int |
| brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) |
| { |
| int err; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (devinfo == NULL) |
| return -ENODEV; |
| |
| if (!devinfo->image) { |
| brcmf_err("No firmware!\n"); |
| return -ENOENT; |
| } |
| |
| err = brcmf_usb_dlstart(devinfo, |
| (u8 *)devinfo->image, devinfo->image_len); |
| if (err == 0) |
| err = brcmf_usb_dlrun(devinfo); |
| return err; |
| } |
| |
| |
| static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) |
| { |
| brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); |
| |
| /* free the URBS */ |
| brcmf_usb_free_q(&devinfo->rx_freeq, false); |
| brcmf_usb_free_q(&devinfo->tx_freeq, false); |
| |
| usb_free_urb(devinfo->ctl_urb); |
| usb_free_urb(devinfo->bulk_urb); |
| |
| kfree(devinfo->tx_reqs); |
| kfree(devinfo->rx_reqs); |
| } |
| |
| |
| static int check_file(const u8 *headers) |
| { |
| struct trx_header_le *trx; |
| int actual_len = -1; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| /* Extract trx header */ |
| trx = (struct trx_header_le *) headers; |
| if (trx->magic != cpu_to_le32(TRX_MAGIC)) |
| return -1; |
| |
| headers += sizeof(struct trx_header_le); |
| |
| if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { |
| actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); |
| return actual_len + sizeof(struct trx_header_le); |
| } |
| return -1; |
| } |
| |
| |
| static |
| struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, |
| int nrxq, int ntxq) |
| { |
| brcmf_dbg(USB, "Enter\n"); |
| |
| devinfo->bus_pub.nrxq = nrxq; |
| devinfo->rx_low_watermark = nrxq / 2; |
| devinfo->bus_pub.devinfo = devinfo; |
| devinfo->bus_pub.ntxq = ntxq; |
| devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; |
| |
| /* flow control when too many tx urbs posted */ |
| devinfo->tx_low_watermark = ntxq / 4; |
| devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; |
| devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; |
| |
| /* Initialize other structure content */ |
| init_waitqueue_head(&devinfo->ioctl_resp_wait); |
| |
| /* Initialize the spinlocks */ |
| spin_lock_init(&devinfo->qlock); |
| spin_lock_init(&devinfo->tx_flowblock_lock); |
| |
| INIT_LIST_HEAD(&devinfo->rx_freeq); |
| INIT_LIST_HEAD(&devinfo->rx_postq); |
| |
| INIT_LIST_HEAD(&devinfo->tx_freeq); |
| INIT_LIST_HEAD(&devinfo->tx_postq); |
| |
| devinfo->tx_flowblock = false; |
| |
| devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); |
| if (!devinfo->rx_reqs) |
| goto error; |
| |
| devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); |
| if (!devinfo->tx_reqs) |
| goto error; |
| devinfo->tx_freecount = ntxq; |
| |
| devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); |
| if (!devinfo->ctl_urb) { |
| brcmf_err("usb_alloc_urb (ctl) failed\n"); |
| goto error; |
| } |
| devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); |
| if (!devinfo->bulk_urb) { |
| brcmf_err("usb_alloc_urb (bulk) failed\n"); |
| goto error; |
| } |
| |
| return &devinfo->bus_pub; |
| |
| error: |
| brcmf_err("failed!\n"); |
| brcmf_usb_detach(devinfo); |
| return NULL; |
| } |
| |
| static void brcmf_usb_wowl_config(struct device *dev, bool enabled) |
| { |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); |
| |
| brcmf_dbg(USB, "Configuring WOWL, enabled=%d\n", enabled); |
| devinfo->wowl_enabled = enabled; |
| if (enabled) |
| device_set_wakeup_enable(devinfo->dev, true); |
| else |
| device_set_wakeup_enable(devinfo->dev, false); |
| } |
| |
| static const struct brcmf_bus_ops brcmf_usb_bus_ops = { |
| .txdata = brcmf_usb_tx, |
| .stop = brcmf_usb_down, |
| .txctl = brcmf_usb_tx_ctlpkt, |
| .rxctl = brcmf_usb_rx_ctlpkt, |
| .wowl_config = brcmf_usb_wowl_config, |
| }; |
| |
| static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo) |
| { |
| int ret; |
| |
| /* Attach to the common driver interface */ |
| ret = brcmf_attach(devinfo->dev); |
| if (ret) { |
| brcmf_err("brcmf_attach failed\n"); |
| return ret; |
| } |
| |
| ret = brcmf_usb_up(devinfo->dev); |
| if (ret) |
| goto fail; |
| |
| ret = brcmf_bus_start(devinfo->dev); |
| if (ret) |
| goto fail; |
| |
| return 0; |
| fail: |
| brcmf_detach(devinfo->dev); |
| return ret; |
| } |
| |
| static void brcmf_usb_probe_phase2(struct device *dev, |
| const struct firmware *fw, |
| void *nvram, u32 nvlen) |
| { |
| struct brcmf_bus *bus = dev_get_drvdata(dev); |
| struct brcmf_usbdev_info *devinfo; |
| int ret; |
| |
| brcmf_dbg(USB, "Start fw downloading\n"); |
| |
| devinfo = bus->bus_priv.usb->devinfo; |
| ret = check_file(fw->data); |
| if (ret < 0) { |
| brcmf_err("invalid firmware\n"); |
| release_firmware(fw); |
| goto error; |
| } |
| |
| devinfo->image = fw->data; |
| devinfo->image_len = fw->size; |
| |
| ret = brcmf_usb_fw_download(devinfo); |
| release_firmware(fw); |
| if (ret) |
| goto error; |
| |
| ret = brcmf_usb_bus_setup(devinfo); |
| if (ret) |
| goto error; |
| |
| mutex_unlock(&devinfo->dev_init_lock); |
| return; |
| error: |
| brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); |
| mutex_unlock(&devinfo->dev_init_lock); |
| device_release_driver(dev); |
| } |
| |
| static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) |
| { |
| struct brcmf_bus *bus = NULL; |
| struct brcmf_usbdev *bus_pub = NULL; |
| struct device *dev = devinfo->dev; |
| int ret; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); |
| if (!bus_pub) |
| return -ENODEV; |
| |
| bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); |
| if (!bus) { |
| ret = -ENOMEM; |
| goto fail; |
| } |
| |
| bus->dev = dev; |
| bus_pub->bus = bus; |
| bus->bus_priv.usb = bus_pub; |
| dev_set_drvdata(dev, bus); |
| bus->ops = &brcmf_usb_bus_ops; |
| bus->proto_type = BRCMF_PROTO_BCDC; |
| bus->always_use_fws_queue = true; |
| #ifdef CONFIG_PM |
| bus->wowl_supported = true; |
| #endif |
| |
| if (!brcmf_usb_dlneeded(devinfo)) { |
| ret = brcmf_usb_bus_setup(devinfo); |
| if (ret) |
| goto fail; |
| /* we are done */ |
| mutex_unlock(&devinfo->dev_init_lock); |
| return 0; |
| } |
| bus->chip = bus_pub->devid; |
| bus->chiprev = bus_pub->chiprev; |
| |
| ret = brcmf_fw_map_chip_to_name(bus_pub->devid, bus_pub->chiprev, |
| brcmf_usb_fwnames, |
| ARRAY_SIZE(brcmf_usb_fwnames), |
| devinfo->fw_name, NULL); |
| if (ret) |
| goto fail; |
| |
| /* request firmware here */ |
| ret = brcmf_fw_get_firmwares(dev, 0, devinfo->fw_name, NULL, |
| brcmf_usb_probe_phase2); |
| if (ret) { |
| brcmf_err("firmware request failed: %d\n", ret); |
| goto fail; |
| } |
| |
| return 0; |
| |
| fail: |
| /* Release resources in reverse order */ |
| kfree(bus); |
| brcmf_usb_detach(devinfo); |
| return ret; |
| } |
| |
| static void |
| brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) |
| { |
| if (!devinfo) |
| return; |
| brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); |
| |
| brcmf_detach(devinfo->dev); |
| kfree(devinfo->bus_pub.bus); |
| brcmf_usb_detach(devinfo); |
| } |
| |
| static int |
| brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) |
| { |
| struct usb_device *usb = interface_to_usbdev(intf); |
| struct brcmf_usbdev_info *devinfo; |
| struct usb_interface_descriptor *desc; |
| struct usb_endpoint_descriptor *endpoint; |
| int ret = 0; |
| u32 num_of_eps; |
| u8 endpoint_num, ep; |
| |
| brcmf_dbg(USB, "Enter 0x%04x:0x%04x\n", id->idVendor, id->idProduct); |
| |
| devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); |
| if (devinfo == NULL) |
| return -ENOMEM; |
| |
| devinfo->usbdev = usb; |
| devinfo->dev = &usb->dev; |
| /* Take an init lock, to protect for disconnect while still loading. |
| * Necessary because of the asynchronous firmware load construction |
| */ |
| mutex_init(&devinfo->dev_init_lock); |
| mutex_lock(&devinfo->dev_init_lock); |
| |
| usb_set_intfdata(intf, devinfo); |
| |
| /* Check that the device supports only one configuration */ |
| if (usb->descriptor.bNumConfigurations != 1) { |
| brcmf_err("Number of configurations: %d not supported\n", |
| usb->descriptor.bNumConfigurations); |
| ret = -ENODEV; |
| goto fail; |
| } |
| |
| if ((usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) && |
| (usb->descriptor.bDeviceClass != USB_CLASS_MISC) && |
| (usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS_CONTROLLER)) { |
| brcmf_err("Device class: 0x%x not supported\n", |
| usb->descriptor.bDeviceClass); |
| ret = -ENODEV; |
| goto fail; |
| } |
| |
| desc = &intf->altsetting[0].desc; |
| if ((desc->bInterfaceClass != USB_CLASS_VENDOR_SPEC) || |
| (desc->bInterfaceSubClass != 2) || |
| (desc->bInterfaceProtocol != 0xff)) { |
| brcmf_err("non WLAN interface %d: 0x%x:0x%x:0x%x\n", |
| desc->bInterfaceNumber, desc->bInterfaceClass, |
| desc->bInterfaceSubClass, desc->bInterfaceProtocol); |
| ret = -ENODEV; |
| goto fail; |
| } |
| |
| num_of_eps = desc->bNumEndpoints; |
| for (ep = 0; ep < num_of_eps; ep++) { |
| endpoint = &intf->altsetting[0].endpoint[ep].desc; |
| endpoint_num = usb_endpoint_num(endpoint); |
| if (!usb_endpoint_xfer_bulk(endpoint)) |
| continue; |
| if (usb_endpoint_dir_in(endpoint)) { |
| if (!devinfo->rx_pipe) |
| devinfo->rx_pipe = |
| usb_rcvbulkpipe(usb, endpoint_num); |
| } else { |
| if (!devinfo->tx_pipe) |
| devinfo->tx_pipe = |
| usb_sndbulkpipe(usb, endpoint_num); |
| } |
| } |
| if (devinfo->rx_pipe == 0) { |
| brcmf_err("No RX (in) Bulk EP found\n"); |
| ret = -ENODEV; |
| goto fail; |
| } |
| if (devinfo->tx_pipe == 0) { |
| brcmf_err("No TX (out) Bulk EP found\n"); |
| ret = -ENODEV; |
| goto fail; |
| } |
| |
| devinfo->ifnum = desc->bInterfaceNumber; |
| |
| if (usb->speed == USB_SPEED_SUPER) |
| brcmf_dbg(USB, "Broadcom super speed USB WLAN interface detected\n"); |
| else if (usb->speed == USB_SPEED_HIGH) |
| brcmf_dbg(USB, "Broadcom high speed USB WLAN interface detected\n"); |
| else |
| brcmf_dbg(USB, "Broadcom full speed USB WLAN interface detected\n"); |
| |
| ret = brcmf_usb_probe_cb(devinfo); |
| if (ret) |
| goto fail; |
| |
| /* Success */ |
| return 0; |
| |
| fail: |
| mutex_unlock(&devinfo->dev_init_lock); |
| kfree(devinfo); |
| usb_set_intfdata(intf, NULL); |
| return ret; |
| } |
| |
| static void |
| brcmf_usb_disconnect(struct usb_interface *intf) |
| { |
| struct brcmf_usbdev_info *devinfo; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); |
| |
| if (devinfo) { |
| mutex_lock(&devinfo->dev_init_lock); |
| /* Make sure that devinfo still exists. Firmware probe routines |
| * may have released the device and cleared the intfdata. |
| */ |
| if (!usb_get_intfdata(intf)) |
| goto done; |
| |
| brcmf_usb_disconnect_cb(devinfo); |
| kfree(devinfo); |
| } |
| done: |
| brcmf_dbg(USB, "Exit\n"); |
| } |
| |
| /* |
| * only need to signal the bus being down and update the state. |
| */ |
| static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) |
| { |
| struct usb_device *usb = interface_to_usbdev(intf); |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); |
| |
| brcmf_dbg(USB, "Enter\n"); |
| devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; |
| if (devinfo->wowl_enabled) |
| brcmf_cancel_all_urbs(devinfo); |
| else |
| brcmf_detach(&usb->dev); |
| return 0; |
| } |
| |
| /* |
| * (re-) start the bus. |
| */ |
| static int brcmf_usb_resume(struct usb_interface *intf) |
| { |
| struct usb_device *usb = interface_to_usbdev(intf); |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); |
| |
| brcmf_dbg(USB, "Enter\n"); |
| if (!devinfo->wowl_enabled) |
| return brcmf_usb_bus_setup(devinfo); |
| |
| devinfo->bus_pub.state = BRCMFMAC_USB_STATE_UP; |
| brcmf_usb_rx_fill_all(devinfo); |
| return 0; |
| } |
| |
| static int brcmf_usb_reset_resume(struct usb_interface *intf) |
| { |
| struct usb_device *usb = interface_to_usbdev(intf); |
| struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); |
| |
| brcmf_dbg(USB, "Enter\n"); |
| |
| return brcmf_fw_get_firmwares(&usb->dev, 0, devinfo->fw_name, NULL, |
| brcmf_usb_probe_phase2); |
| } |
| |
| #define BRCMF_USB_DEVICE(dev_id) \ |
| { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) } |
| |
| static struct usb_device_id brcmf_usb_devid_table[] = { |
| BRCMF_USB_DEVICE(BRCM_USB_43143_DEVICE_ID), |
| BRCMF_USB_DEVICE(BRCM_USB_43236_DEVICE_ID), |
| BRCMF_USB_DEVICE(BRCM_USB_43242_DEVICE_ID), |
| BRCMF_USB_DEVICE(BRCM_USB_43569_DEVICE_ID), |
| { USB_DEVICE(BRCM_USB_VENDOR_ID_LG, BRCM_USB_43242_LG_DEVICE_ID) }, |
| /* special entry for device with firmware loaded and running */ |
| BRCMF_USB_DEVICE(BRCM_USB_BCMFW_DEVICE_ID), |
| { /* end: all zeroes */ } |
| }; |
| |
| MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); |
| |
| static struct usb_driver brcmf_usbdrvr = { |
| .name = KBUILD_MODNAME, |
| .probe = brcmf_usb_probe, |
| .disconnect = brcmf_usb_disconnect, |
| .id_table = brcmf_usb_devid_table, |
| .suspend = brcmf_usb_suspend, |
| .resume = brcmf_usb_resume, |
| .reset_resume = brcmf_usb_reset_resume, |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0)) |
| .disable_hub_initiated_lpm = 1, |
| #endif |
| }; |
| |
| static int brcmf_usb_reset_device(struct device *dev, void *notused) |
| { |
| /* device past is the usb interface so we |
| * need to use parent here. |
| */ |
| brcmf_dev_reset(dev->parent); |
| return 0; |
| } |
| |
| void brcmf_usb_exit(void) |
| { |
| struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; |
| int ret; |
| |
| brcmf_dbg(USB, "Enter\n"); |
| ret = driver_for_each_device(drv, NULL, NULL, |
| brcmf_usb_reset_device); |
| usb_deregister(&brcmf_usbdrvr); |
| } |
| |
| void brcmf_usb_register(void) |
| { |
| brcmf_dbg(USB, "Enter\n"); |
| usb_register(&brcmf_usbdrvr); |
| } |