bnx2x: HW lock mechanism

HW lock mechanism
Enhancing the HW lock to work per function and not only per port - this
is needed for the next patch that protects races over HW attention
detection between the different functions. At this chance, changing the
functions names to be more inline with the current naming convention
Signed-off-by: Yitchak Gertner <gertner@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bnx2x_reg.h

@@ -1372,6 +1372,23 @@
    be asserted). */
 #define MISC_REG_DRIVER_CONTROL_16				 0xa5f0
 #define MISC_REG_DRIVER_CONTROL_16_SIZE 			 2
+/* [RW 32] The following driver registers(1...16) represent 16 drivers and
+   32 clients. Each client can be controlled by one driver only. One in each
+   bit represent that this driver control the appropriate client (Ex: bit 5
+   is set means this driver control client number 5). addr1 = set; addr0 =
+   clear; read from both addresses will give the same result = status. write
+   to address 1 will set a request to control all the clients that their
+   appropriate bit (in the write command) is set. if the client is free (the
+   appropriate bit in all the other drivers is clear) one will be written to
+   that driver register; if the client isn't free the bit will remain zero.
+   if the appropriate bit is set (the driver request to gain control on a
+   client it already controls the ~MISC_REGISTERS_INT_STS.GENERIC_SW
+   interrupt will be asserted). write to address 0 will set a request to
+   free all the clients that their appropriate bit (in the write command) is
+   set. if the appropriate bit is clear (the driver request to free a client
+   it doesn't controls the ~MISC_REGISTERS_INT_STS.GENERIC_SW interrupt will
+   be asserted). */
+#define MISC_REG_DRIVER_CONTROL_7				 0xa3c8
 /* [RW 1] e1hmf for WOL. If clr WOL signal o the PXP will be send on bit 0
    only. */
 #define MISC_REG_E1HMF_MODE					 0xa5f8