diff options
Diffstat (limited to 'drivers/net/usb/lan78xx.c')
| -rw-r--r-- | drivers/net/usb/lan78xx.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 2896d31e5573..ccfb2d47932d 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -46,6 +46,19 @@ #define MAX_RX_FIFO_SIZE (12 * 1024) #define MAX_TX_FIFO_SIZE (12 * 1024) + +#define FLOW_THRESHOLD(n) ((((n) + 511) / 512) & 0x7F) +#define FLOW_CTRL_THRESHOLD(on, off) ((FLOW_THRESHOLD(on) << 0) | \ + (FLOW_THRESHOLD(off) << 8)) + +/* Flow control turned on when Rx FIFO level rises above this level (bytes) */ +#define FLOW_ON_SS 9216 +#define FLOW_ON_HS 8704 + +/* Flow control turned off when Rx FIFO level falls below this level (bytes) */ +#define FLOW_OFF_SS 4096 +#define FLOW_OFF_HS 1024 + #define DEFAULT_BURST_CAP_SIZE (MAX_TX_FIFO_SIZE) #define DEFAULT_BULK_IN_DELAY (0x0800) #define MAX_SINGLE_PACKET_SIZE (9000) @@ -1135,9 +1148,9 @@ static int lan78xx_update_flowcontrol(struct lan78xx_net *dev, u8 duplex, flow |= FLOW_CR_RX_FCEN_; if (dev->udev->speed == USB_SPEED_SUPER) - fct_flow = 0x817; + fct_flow = FLOW_CTRL_THRESHOLD(FLOW_ON_SS, FLOW_OFF_SS); else if (dev->udev->speed == USB_SPEED_HIGH) - fct_flow = 0x211; + fct_flow = FLOW_CTRL_THRESHOLD(FLOW_ON_HS, FLOW_OFF_HS); netif_dbg(dev, link, dev->net, "rx pause %s, tx pause %s", (cap & FLOW_CTRL_RX ? "enabled" : "disabled"), |