From 803599d4041812a2e90d7e9dd423b6977c56e1fb Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Wed, 19 Sep 2012 22:21:10 +0200 Subject: [PATCH] brcmfmac: store usb fw images in local linked list. For suspend/resume it is necessary to store firmware in memory. In order to support multiple usb dongles at the same time a linked list of firmwares was created. Reviewed-by: Arend Van Spriel Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/usb.c | 64 +++++++++++++++++---------- 1 file changed, 41 insertions(+), 23 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c index 03f59cd0572a..edb431182d10 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c @@ -81,10 +81,12 @@ enum usbdev_suspend_state { }; struct brcmf_usb_image { - void *data; - u32 len; + struct list_head list; + s8 *fwname; + u8 *image; + int image_len; }; -static struct brcmf_usb_image g_image = { NULL, 0 }; +static struct list_head fw_image_list; struct intr_transfer_buf { u32 notification; @@ -1152,10 +1154,6 @@ static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) { brcmf_dbg(TRACE, "devinfo %p\n", devinfo); - /* store the image globally */ - g_image.data = devinfo->image; - g_image.len = devinfo->image_len; - /* free the URBS */ brcmf_usb_free_q(&devinfo->rx_freeq, false); brcmf_usb_free_q(&devinfo->tx_freeq, false); @@ -1207,17 +1205,9 @@ static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo) { s8 *fwname; const struct firmware *fw; + struct brcmf_usb_image *fw_image; int err; - devinfo->image = g_image.data; - devinfo->image_len = g_image.len; - - /* - * if we have an image we can leave here. - */ - if (devinfo->image) - return 0; - switch (devinfo->bus_pub.devid) { case 43143: fwname = BRCMF_USB_43143_FW_NAME; @@ -1235,6 +1225,14 @@ static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo) break; } + list_for_each_entry(fw_image, &fw_image_list, list) { + if (fw_image->fwname == fwname) { + devinfo->image = fw_image->image; + devinfo->image_len = fw_image->image_len; + return 0; + } + } + /* fw image not yet loaded. Load it now and add to list */ err = request_firmware(&fw, fwname, devinfo->dev); if (!fw) { brcmf_dbg(ERROR, "fail to request firmware %s\n", fwname); @@ -1245,14 +1243,24 @@ static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo) return -EINVAL; } - devinfo->image = vmalloc(fw->size); /* plus nvram */ - if (!devinfo->image) + fw_image = kzalloc(sizeof(*fw_image), GFP_ATOMIC); + if (!fw_image) + return -ENOMEM; + INIT_LIST_HEAD(&fw_image->list); + list_add_tail(&fw_image->list, &fw_image_list); + fw_image->fwname = fwname; + fw_image->image = vmalloc(fw->size); + if (!fw_image->image) return -ENOMEM; - memcpy(devinfo->image, fw->data, fw->size); - devinfo->image_len = fw->size; + memcpy(fw_image->image, fw->data, fw->size); + fw_image->image_len = fw->size; release_firmware(fw); + + devinfo->image = fw_image->image; + devinfo->image_len = fw_image->image_len; + return 0; } @@ -1594,15 +1602,25 @@ static struct usb_driver brcmf_usbdrvr = { .disable_hub_initiated_lpm = 1, }; +static void brcmf_release_fw(struct list_head *q) +{ + struct brcmf_usb_image *fw_image, *next; + + list_for_each_entry_safe(fw_image, next, q, list) { + vfree(fw_image->image); + list_del_init(&fw_image->list); + } +} + + void brcmf_usb_exit(void) { usb_deregister(&brcmf_usbdrvr); - vfree(g_image.data); - g_image.data = NULL; - g_image.len = 0; + brcmf_release_fw(&fw_image_list); } void brcmf_usb_init(void) { + INIT_LIST_HEAD(&fw_image_list); usb_register(&brcmf_usbdrvr); } -- 2.11.0