diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 1571 |
1 files changed, 1571 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c new file mode 100644 index 0000000..fdf4b5f --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c @@ -0,0 +1,1571 @@ +// SPDX-License-Identifier: ISC +/* + * Copyright (c) 2011 Broadcom Corporation + */ + +#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" +#include "core.h" +#include "common.h" +#include "bcdc.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"); +BRCMF_FW_DEF(43236B, "brcmfmac43236b"); +BRCMF_FW_DEF(43242A, "brcmfmac43242a"); +BRCMF_FW_DEF(43569, "brcmfmac43569"); +BRCMF_FW_DEF(4373, "brcmfmac4373"); + +static const 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), + BRCMF_FW_ENTRY(CY_CC_4373_CHIP_ID, 0xFFFFFFFF, 4373) +}; + +#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 completion dev_init_done; + + 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; + struct brcmf_mp_device *settings; +}; + +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); + } + kfree(reqs); + return NULL; + +} + +static void brcmf_usb_free_q(struct list_head *q) +{ + struct brcmf_usbreq *req, *next; + + list_for_each_entry_safe(req, next, q, list) { + if (!req->urb) { + brcmf_err("bad req\n"); + break; + } + 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_proto_bcdc_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_proto_bcdc_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 length 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, true); + 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; + + brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", + devinfo->bus_pub.state, state); + + if (devinfo->bus_pub.state == state) + return; + + 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_proto_bcdc_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) +{ + int i; + + if (devinfo->ctl_urb) + usb_kill_urb(devinfo->ctl_urb); + if (devinfo->bulk_urb) + usb_kill_urb(devinfo->bulk_urb); + if (devinfo->tx_reqs) + for (i = 0; i < devinfo->bus_pub.ntxq; i++) + usb_kill_urb(devinfo->tx_reqs[i].urb); + if (devinfo->rx_reqs) + for (i = 0; i < devinfo->bus_pub.nrxq; i++) + usb_kill_urb(devinfo->rx_reqs[i].urb); +} + +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); + brcmf_usb_free_q(&devinfo->tx_freeq); + + usb_free_urb(devinfo->ctl_urb); + usb_free_urb(devinfo->bulk_urb); + + kfree(devinfo->tx_reqs); + kfree(devinfo->rx_reqs); + + if (devinfo->settings) + brcmf_release_module_param(devinfo->settings); +} + + +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) + goto error; + devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!devinfo->bulk_urb) + 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 +int brcmf_usb_get_fwname(struct device *dev, const char *ext, u8 *fw_name) +{ + struct brcmf_bus *bus = dev_get_drvdata(dev); + struct brcmf_fw_request *fwreq; + struct brcmf_fw_name fwnames[] = { + { ext, fw_name }, + }; + + fwreq = brcmf_fw_alloc_request(bus->chip, bus->chiprev, + brcmf_usb_fwnames, + ARRAY_SIZE(brcmf_usb_fwnames), + fwnames, ARRAY_SIZE(fwnames)); + if (!fwreq) + return -ENOMEM; + + kfree(fwreq); + return 0; +} + +static const struct brcmf_bus_ops brcmf_usb_bus_ops = { + .preinit = brcmf_usb_up, + .stop = brcmf_usb_down, + .txdata = brcmf_usb_tx, + .txctl = brcmf_usb_tx_ctlpkt, + .rxctl = brcmf_usb_rx_ctlpkt, + .wowl_config = brcmf_usb_wowl_config, + .get_fwname = brcmf_usb_get_fwname, +}; + +#define BRCMF_USB_FW_CODE 0 + +static void brcmf_usb_probe_phase2(struct device *dev, int ret, + struct brcmf_fw_request *fwreq) +{ + struct brcmf_bus *bus = dev_get_drvdata(dev); + struct brcmf_usbdev_info *devinfo = bus->bus_priv.usb->devinfo; + const struct firmware *fw; + + if (ret) + goto error; + + brcmf_dbg(USB, "Start fw downloading\n"); + + fw = fwreq->items[BRCMF_USB_FW_CODE].binary; + kfree(fwreq); + + 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_alloc(devinfo->dev, devinfo->settings); + if (ret) + goto error; + + /* Attach to the common driver interface */ + ret = brcmf_attach(devinfo->dev); + if (ret) + goto error; + + complete(&devinfo->dev_init_done); + return; +error: + brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); + complete(&devinfo->dev_init_done); + device_release_driver(dev); +} + +static struct brcmf_fw_request * +brcmf_usb_prepare_fw_request(struct brcmf_usbdev_info *devinfo) +{ + struct brcmf_fw_request *fwreq; + struct brcmf_fw_name fwnames[] = { + { ".bin", devinfo->fw_name }, + }; + + fwreq = brcmf_fw_alloc_request(devinfo->bus_pub.devid, + devinfo->bus_pub.chiprev, + brcmf_usb_fwnames, + ARRAY_SIZE(brcmf_usb_fwnames), + fwnames, ARRAY_SIZE(fwnames)); + if (!fwreq) + return NULL; + + fwreq->items[BRCMF_USB_FW_CODE].type = BRCMF_FW_TYPE_BINARY; + + return fwreq; +} + +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; + struct brcmf_fw_request *fwreq; + 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 + + devinfo->settings = brcmf_get_module_param(bus->dev, BRCMF_BUSTYPE_USB, + bus_pub->devid, + bus_pub->chiprev); + if (!devinfo->settings) { + ret = -ENOMEM; + goto fail; + } + + if (!brcmf_usb_dlneeded(devinfo)) { + ret = brcmf_alloc(devinfo->dev, devinfo->settings); + if (ret) + goto fail; + ret = brcmf_attach(devinfo->dev); + if (ret) + goto fail; + /* we are done */ + complete(&devinfo->dev_init_done); + return 0; + } + bus->chip = bus_pub->devid; + bus->chiprev = bus_pub->chiprev; + + fwreq = brcmf_usb_prepare_fw_request(devinfo); + if (!fwreq) { + ret = -ENOMEM; + goto fail; + } + + /* request firmware here */ + ret = brcmf_fw_get_firmwares(dev, fwreq, brcmf_usb_probe_phase2); + if (ret) { + brcmf_err("firmware request failed: %d\n", ret); + kfree(fwreq); + goto fail; + } + + return 0; + +fail: + /* Release resources in reverse order */ + brcmf_free(devinfo->dev); + 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); + brcmf_free(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; + /* Init completion, to protect for disconnect while still loading. + * Necessary because of the asynchronous firmware load construction + */ + init_completion(&devinfo->dev_init_done); + + 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->cur_altsetting->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->cur_altsetting->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_PLUS) + brcmf_dbg(USB, "Broadcom super speed plus USB WLAN interface detected\n"); + else 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: + complete(&devinfo->dev_init_done); + 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) { + wait_for_completion(&devinfo->dev_init_done); + /* 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); + brcmf_free(&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) { + int err; + + err = brcmf_alloc(&usb->dev, devinfo->settings); + if (err) + return err; + + err = brcmf_attach(devinfo->dev); + if (err) { + brcmf_free(devinfo->dev); + return err; + } + } + + 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); + struct brcmf_fw_request *fwreq; + int ret; + + brcmf_dbg(USB, "Enter\n"); + + fwreq = brcmf_usb_prepare_fw_request(devinfo); + if (!fwreq) + return -ENOMEM; + + ret = brcmf_fw_get_firmwares(&usb->dev, fwreq, brcmf_usb_probe_phase2); + if (ret < 0) + kfree(fwreq); + + return ret; +} + +#define BRCMF_USB_DEVICE(dev_id) \ + { USB_DEVICE(BRCM_USB_VENDOR_ID_BROADCOM, dev_id) } + +#define LINKSYS_USB_DEVICE(dev_id) \ + { USB_DEVICE(BRCM_USB_VENDOR_ID_LINKSYS, dev_id) } + +#define CYPRESS_USB_DEVICE(dev_id) \ + { USB_DEVICE(CY_USB_VENDOR_ID_CYPRESS, dev_id) } + +static const 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), + LINKSYS_USB_DEVICE(BRCM_USB_43235_LINKSYS_DEVICE_ID), + CYPRESS_USB_DEVICE(CY_USB_4373_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), + CYPRESS_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_IS_GEQ(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) +{ + int ret; + + brcmf_dbg(USB, "Enter\n"); + ret = usb_register(&brcmf_usbdrvr); + if (ret) + brcmf_err("usb_register failed %d\n", ret); +} |