update the old warhorse with a few msi-x registers.

Reference: /n/atom/patch/applied/i63msixbits
Date: Sat Mar 22 04:44:21 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/k10/ether82563.c	Sat Mar 22 04:44:05 2014
+++ /sys/src/nix/k10/ether82563.c	Sat Mar 22 04:44:05 2014
@@ -31,7 +31,7 @@
 	Fla		= 0x001c,	/* Flash Access */
 	Mdic		= 0x0020,	/* MDI Control */
 	Fcal		= 0x0028,	/* Flow Control Address Low */
-	Fcah		= 0x002C,	/* Flow Control Address High */
+	Fcah		= 0x002c,	/* Flow Control Address High */
 	Fct		= 0x0030,	/* Flow Control Type */
 	Kumctrlsta	= 0x0034,	/* Kumeran Control and Status Register */
 	Connsw		= 0x0034,	/* copper / fiber switch control; 82575/82576 */
@@ -39,19 +39,22 @@
 	Fcttv		= 0x0170,	/* Flow Control Transmit Timer Value */
 	Txcw		= 0x0178,	/* Transmit Configuration Word */
 	Rxcw		= 0x0180,	/* Receive Configuration Word */
-	Ledctl		= 0x0E00,	/* LED control */
+	Ledctl		= 0x0e00,	/* LED control */
 	Pba		= 0x1000,	/* Packet Buffer Allocation */
 	Pbs		= 0x1008,	/* Packet Buffer Size */
 
 	/* Interrupt */
 
-	Icr		= 0x00C0,	/* Interrupt Cause Read */
+	Icr		= 0x00c0,	/* Interrupt Cause Read */
 	Itr		= 0x00c4,	/* Interrupt Throttling Rate */
-	Ics		= 0x00C8,	/* Interrupt Cause Set */
-	Ims		= 0x00D0,	/* Interrupt Mask Set/Read */
-	Imc		= 0x00D8,	/* Interrupt mask Clear */
-	Iam		= 0x00E0,	/* Interrupt acknowledge Auto Mask */
+	Ics		= 0x00c8,	/* Interrupt Cause Set */
+	Ims		= 0x00d0,	/* Interrupt Mask Set/Read */
+	Imc		= 0x00d8,	/* Interrupt mask Clear */
+	Iam		= 0x00e0,	/* Interrupt acknowledge Auto Mask */
+	Ivar		= 0x00e4,	/* Ivar: interrupt allocation */
 	Eitr		= 0x1680,	/* Extended itr; 82575/6 80 only */
+	P3gio		= 0x5b00,	/*  */
+	Pbaclr		= 0x5b68,	/* clear msi-x pba */
 
 	/* Receive */
 
@@ -143,6 +146,9 @@
 	Internalphy	= 0<<22,	/* " internal phy (copper) */
 	Sgmii		= 2<<22,	/* " sgmii */
 	Serdes		= 3<<22,	/* " serdes */
+	Eiame		= 1<<24,	/* extended auto mask enable */
+	Iame		= 1<<27,	/* auto mask enable */
+	Pbasup		= 1<<31,	/* msi-x pba support */
 };
 
 enum {
@@ -2048,11 +2054,11 @@
 		print("%s: can't map %#P\n", cname(ctlr), ctlr->port);
 		return -1;
 	}
+	pcisetbme(p);
 	if(i82563reset(ctlr)){
 		vunmap(ctlr->nic, p->mem[0].size);
 		return -1;
 	}
-	pcisetbme(ctlr->pcidev);
 	return 0;
 }