fc74a9f93a
struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
527 lines
16 KiB
C
527 lines
16 KiB
C
/*-
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* Copyright (c) 1997, 1998, 1999
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* Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Register definitions for the SiS 900 and SiS 7016 chipsets. The
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* 7016 is actually an older chip and some of its registers differ
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* from the 900, however the core operational registers are the same:
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* the differences lie in the OnNow/Wake on LAN stuff which we don't
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* use anyway. The 7016 needs an external MII compliant PHY while the
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* SiS 900 has one built in. All registers are 32-bits wide.
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*/
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/* Registers common to SiS 900 and SiS 7016 */
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#define SIS_CSR 0x00
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#define SIS_CFG 0x04
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#define SIS_EECTL 0x08
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#define SIS_PCICTL 0x0C
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#define SIS_ISR 0x10
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#define SIS_IMR 0x14
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#define SIS_IER 0x18
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#define SIS_PHYCTL 0x1C
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#define SIS_TX_LISTPTR 0x20
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#define SIS_TX_CFG 0x24
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#define SIS_RX_LISTPTR 0x30
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#define SIS_RX_CFG 0x34
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#define SIS_FLOWCTL 0x38
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#define SIS_RXFILT_CTL 0x48
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#define SIS_RXFILT_DATA 0x4C
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#define SIS_PWRMAN_CTL 0xB0
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#define SIS_PWERMAN_WKUP_EVENT 0xB4
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#define SIS_WKUP_FRAME_CRC 0xBC
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#define SIS_WKUP_FRAME_MASK0 0xC0
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#define SIS_WKUP_FRAME_MASKXX 0xEC
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/* SiS 7016 specific registers */
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#define SIS_SILICON_REV 0x5C
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#define SIS_MIB_CTL0 0x60
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#define SIS_MIB_CTL1 0x64
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#define SIS_MIB_CTL2 0x68
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#define SIS_MIB_CTL3 0x6C
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#define SIS_MIB 0x80
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#define SIS_LINKSTS 0xA0
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#define SIS_TIMEUNIT 0xA4
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#define SIS_GPIO 0xB8
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/* NS DP83815/6 registers */
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#define NS_IHR 0x1C
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#define NS_CLKRUN 0x3C
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#define NS_SRR 0x58
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#define NS_BMCR 0x80
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#define NS_BMSR 0x84
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#define NS_PHYIDR1 0x88
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#define NS_PHYIDR2 0x8C
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#define NS_ANAR 0x90
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#define NS_ANLPAR 0x94
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#define NS_ANER 0x98
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#define NS_ANNPTR 0x9C
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#define NS_PHY_CR 0xE4
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#define NS_PHY_10BTSCR 0xE8
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#define NS_PHY_PAGE 0xCC
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#define NS_PHY_EXTCFG 0xF0
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#define NS_PHY_DSPCFG 0xF4
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#define NS_PHY_SDCFG 0xF8
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#define NS_PHY_TDATA 0xFC
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#define NS_CLKRUN_PMESTS 0x00008000
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#define NS_CLKRUN_PMEENB 0x00000100
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#define NS_CLNRUN_CLKRUN_ENB 0x00000001
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/* NS silicon revisions */
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#define NS_SRR_15C 0x302
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#define NS_SRR_15D 0x403
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#define NS_SRR_16A 0x505
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#define SIS_CSR_TX_ENABLE 0x00000001
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#define SIS_CSR_TX_DISABLE 0x00000002
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#define SIS_CSR_RX_ENABLE 0x00000004
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#define SIS_CSR_RX_DISABLE 0x00000008
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#define SIS_CSR_TX_RESET 0x00000010
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#define SIS_CSR_RX_RESET 0x00000020
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#define SIS_CSR_SOFTINTR 0x00000080
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#define SIS_CSR_RESET 0x00000100
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#define SIS_CSR_ACCESS_MODE 0x00000200
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#define SIS_CSR_RELOAD 0x00000400
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#define SIS_CFG_BIGENDIAN 0x00000001
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#define SIS_CFG_PERR_DETECT 0x00000008
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#define SIS_CFG_DEFER_DISABLE 0x00000010
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#define SIS_CFG_OUTOFWIN_TIMER 0x00000020
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#define SIS_CFG_SINGLE_BACKOFF 0x00000040
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#define SIS_CFG_PCIREQ_ALG 0x00000080
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#define SIS_CFG_FAIR_BACKOFF 0x00000200 /* 635 & 900B Specific */
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#define SIS_CFG_RND_CNT 0x00000400 /* 635 & 900B Specific */
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#define SIS_CFG_EDB_MASTER_EN 0x00002000
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#define SIS_EECTL_DIN 0x00000001
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#define SIS_EECTL_DOUT 0x00000002
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#define SIS_EECTL_CLK 0x00000004
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#define SIS_EECTL_CSEL 0x00000008
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#define SIS_MII_CLK 0x00000040
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#define SIS_MII_DIR 0x00000020
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#define SIS_MII_DATA 0x00000010
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#define SIS_EECMD_WRITE 0x140
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#define SIS_EECMD_READ 0x180
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#define SIS_EECMD_ERASE 0x1c0
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/*
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* EEPROM Commands for SiS96x
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* chipsets.
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*/
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#define SIS_EECMD_REQ 0x00000400
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#define SIS_EECMD_DONE 0x00000200
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#define SIS_EECMD_GNT 0x00000100
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#define SIS_EE_NODEADDR 0x8
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#define NS_EE_NODEADDR 0x6
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#define SIS_PCICTL_SRAMADDR 0x0000001F
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#define SIS_PCICTL_RAMTSTENB 0x00000020
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#define SIS_PCICTL_TXTSTENB 0x00000040
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#define SIS_PCICTL_RXTSTENB 0x00000080
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#define SIS_PCICTL_BMTSTENB 0x00000200
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#define SIS_PCICTL_RAMADDR 0x001F0000
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#define SIS_PCICTL_ROMTIME 0x0F000000
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#define SIS_PCICTL_DISCTEST 0x40000000
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#define SIS_ISR_RX_OK 0x00000001
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#define SIS_ISR_RX_DESC_OK 0x00000002
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#define SIS_ISR_RX_ERR 0x00000004
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#define SIS_ISR_RX_EARLY 0x00000008
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#define SIS_ISR_RX_IDLE 0x00000010
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#define SIS_ISR_RX_OFLOW 0x00000020
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#define SIS_ISR_TX_OK 0x00000040
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#define SIS_ISR_TX_DESC_OK 0x00000080
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#define SIS_ISR_TX_ERR 0x00000100
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#define SIS_ISR_TX_IDLE 0x00000200
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#define SIS_ISR_TX_UFLOW 0x00000400
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#define SIS_ISR_SOFTINTR 0x00000800
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#define SIS_ISR_HIBITS 0x00008000
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#define SIS_ISR_RX_FIFO_OFLOW 0x00010000
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#define SIS_ISR_TGT_ABRT 0x00100000
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#define SIS_ISR_BM_ABRT 0x00200000
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#define SIS_ISR_SYSERR 0x00400000
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#define SIS_ISR_PARITY_ERR 0x00800000
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#define SIS_ISR_RX_RESET_DONE 0x01000000
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#define SIS_ISR_TX_RESET_DONE 0x02000000
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#define SIS_ISR_TX_PAUSE_START 0x04000000
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#define SIS_ISR_TX_PAUSE_DONE 0x08000000
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#define SIS_ISR_WAKE_EVENT 0x10000000
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#define SIS_IMR_RX_OK 0x00000001
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#define SIS_IMR_RX_DESC_OK 0x00000002
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#define SIS_IMR_RX_ERR 0x00000004
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#define SIS_IMR_RX_EARLY 0x00000008
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#define SIS_IMR_RX_IDLE 0x00000010
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#define SIS_IMR_RX_OFLOW 0x00000020
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#define SIS_IMR_TX_OK 0x00000040
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#define SIS_IMR_TX_DESC_OK 0x00000080
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#define SIS_IMR_TX_ERR 0x00000100
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#define SIS_IMR_TX_IDLE 0x00000200
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#define SIS_IMR_TX_UFLOW 0x00000400
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#define SIS_IMR_SOFTINTR 0x00000800
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#define SIS_IMR_HIBITS 0x00008000
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#define SIS_IMR_RX_FIFO_OFLOW 0x00010000
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#define SIS_IMR_TGT_ABRT 0x00100000
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#define SIS_IMR_BM_ABRT 0x00200000
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#define SIS_IMR_SYSERR 0x00400000
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#define SIS_IMR_PARITY_ERR 0x00800000
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#define SIS_IMR_RX_RESET_DONE 0x01000000
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#define SIS_IMR_TX_RESET_DONE 0x02000000
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#define SIS_IMR_TX_PAUSE_START 0x04000000
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#define SIS_IMR_TX_PAUSE_DONE 0x08000000
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#define SIS_IMR_WAKE_EVENT 0x10000000
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#define SIS_INTRS \
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(SIS_IMR_RX_OFLOW|SIS_IMR_TX_UFLOW|SIS_IMR_TX_OK|\
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SIS_IMR_TX_IDLE|SIS_IMR_RX_OK|SIS_IMR_RX_ERR|\
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SIS_IMR_RX_IDLE|\
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SIS_IMR_SYSERR)
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#define SIS_IER_INTRENB 0x00000001
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#define SIS_PHYCTL_ACCESS 0x00000010
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#define SIS_PHYCTL_OP 0x00000020
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#define SIS_PHYCTL_REGADDR 0x000007C0
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#define SIS_PHYCTL_PHYADDR 0x0000F800
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#define SIS_PHYCTL_PHYDATA 0xFFFF0000
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#define SIS_PHYOP_READ 0x00000020
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#define SIS_PHYOP_WRITE 0x00000000
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#define SIS_TXCFG_DRAIN_THRESH 0x0000003F /* 32-byte units */
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#define SIS_TXCFG_FILL_THRESH 0x00003F00 /* 32-byte units */
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#define SIS_TXCFG_DMABURST 0x00700000
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#define SIS_TXCFG_AUTOPAD 0x10000000
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#define SIS_TXCFG_LOOPBK 0x20000000
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#define SIS_TXCFG_IGN_HBEAT 0x40000000
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#define SIS_TXCFG_IGN_CARR 0x80000000
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#define SIS_TXCFG_DRAIN(x) (((x) >> 5) & SIS_TXCFG_DRAIN_THRESH)
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#define SIS_TXCFG_FILL(x) ((((x) >> 5) << 8) & SIS_TXCFG_FILL_THRESH)
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#define SIS_TXDMA_512BYTES 0x00000000
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#define SIS_TXDMA_4BYTES 0x00100000
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#define SIS_TXDMA_8BYTES 0x00200000
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#define SIS_TXDMA_16BYTES 0x00300000
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#define SIS_TXDMA_32BYTES 0x00400000
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#define SIS_TXDMA_64BYTES 0x00500000
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#define SIS_TXDMA_128BYTES 0x00600000
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#define SIS_TXDMA_256BYTES 0x00700000
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#define SIS_TXCFG_100 \
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(SIS_TXDMA_64BYTES|SIS_TXCFG_AUTOPAD|\
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SIS_TXCFG_FILL(64)|SIS_TXCFG_DRAIN(1536))
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#define SIS_TXCFG_10 \
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(SIS_TXDMA_32BYTES|SIS_TXCFG_AUTOPAD|\
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SIS_TXCFG_FILL(64)|SIS_TXCFG_DRAIN(1536))
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#define SIS_RXCFG_DRAIN_THRESH 0x0000003E /* 8-byte units */
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#define SIS_TXCFG_MPII03D 0x00040000 /* "Must be 1" */
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#define SIS_RXCFG_DMABURST 0x00700000
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#define SIS_RXCFG_RX_JABBER 0x08000000
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#define SIS_RXCFG_RX_TXPKTS 0x10000000
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#define SIS_RXCFG_RX_RUNTS 0x40000000
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#define SIS_RXCFG_RX_GIANTS 0x80000000
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#define SIS_RXCFG_DRAIN(x) ((((x) >> 3) << 1) & SIS_RXCFG_DRAIN_THRESH)
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#define SIS_RXDMA_512BYTES 0x00000000
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#define SIS_RXDMA_4BYTES 0x00100000
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#define SIS_RXDMA_8BYTES 0x00200000
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#define SIS_RXDMA_16BYTES 0x00300000
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#define SIS_RXDMA_32BYTES 0x00400000
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#define SIS_RXDMA_64BYTES 0x00500000
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#define SIS_RXDMA_128BYTES 0x00600000
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#define SIS_RXDMA_256BYTES 0x00700000
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#define SIS_RXCFG256 \
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(SIS_RXCFG_DRAIN(64)|SIS_RXDMA_256BYTES)
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#define SIS_RXCFG64 \
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(SIS_RXCFG_DRAIN(64)|SIS_RXDMA_64BYTES)
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#define SIS_RXFILTCTL_ADDR 0x000F0000
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#define NS_RXFILTCTL_MCHASH 0x00200000
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#define NS_RXFILTCTL_ARP 0x00400000
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#define NS_RXFILTCTL_PERFECT 0x08000000
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#define SIS_RXFILTCTL_ALLPHYS 0x10000000
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#define SIS_RXFILTCTL_ALLMULTI 0x20000000
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#define SIS_RXFILTCTL_BROAD 0x40000000
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#define SIS_RXFILTCTL_ENABLE 0x80000000
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#define SIS_FILTADDR_PAR0 0x00000000
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#define SIS_FILTADDR_PAR1 0x00010000
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#define SIS_FILTADDR_PAR2 0x00020000
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#define SIS_FILTADDR_MAR0 0x00040000
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#define SIS_FILTADDR_MAR1 0x00050000
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#define SIS_FILTADDR_MAR2 0x00060000
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#define SIS_FILTADDR_MAR3 0x00070000
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#define SIS_FILTADDR_MAR4 0x00080000
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#define SIS_FILTADDR_MAR5 0x00090000
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#define SIS_FILTADDR_MAR6 0x000A0000
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#define SIS_FILTADDR_MAR7 0x000B0000
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#define NS_FILTADDR_PAR0 0x00000000
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#define NS_FILTADDR_PAR1 0x00000002
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#define NS_FILTADDR_PAR2 0x00000004
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#define NS_FILTADDR_FMEM_LO 0x00000200
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#define NS_FILTADDR_FMEM_HI 0x000003FE
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/*
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* DMA descriptor structures. The first part of the descriptor
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* is the hardware descriptor format, which is just three longwords.
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* After this, we include some additional structure members for
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* use by the driver. Note that for this structure will be a different
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* size on the alpha, but that's okay as long as it's a multiple of 4
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* bytes in size.
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*/
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struct sis_desc {
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/* SiS hardware descriptor section */
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u_int32_t sis_next;
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u_int32_t sis_cmdsts;
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#define sis_rxstat sis_cmdsts
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#define sis_txstat sis_cmdsts
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#define sis_ctl sis_cmdsts
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u_int32_t sis_ptr;
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/* Driver software section */
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struct mbuf *sis_mbuf;
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struct sis_desc *sis_nextdesc;
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bus_dmamap_t sis_map;
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};
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#define SIS_CMDSTS_BUFLEN 0x00000FFF
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#define SIS_CMDSTS_PKT_OK 0x08000000
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#define SIS_CMDSTS_CRC 0x10000000
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#define SIS_CMDSTS_INTR 0x20000000
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#define SIS_CMDSTS_MORE 0x40000000
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#define SIS_CMDSTS_OWN 0x80000000
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#define SIS_LASTDESC(x) (!((x)->sis_ctl & SIS_CMDSTS_MORE))
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#define SIS_OWNDESC(x) ((x)->sis_ctl & SIS_CMDSTS_OWN)
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#define SIS_INC(x, y) (x) = ((x) == ((y)-1)) ? 0 : (x)+1
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#define SIS_RXBYTES(x) (((x)->sis_ctl & SIS_CMDSTS_BUFLEN) - ETHER_CRC_LEN)
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#define SIS_RXSTAT_COLL 0x00010000
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#define SIS_RXSTAT_LOOPBK 0x00020000
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#define SIS_RXSTAT_ALIGNERR 0x00040000
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#define SIS_RXSTAT_CRCERR 0x00080000
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#define SIS_RXSTAT_SYMBOLERR 0x00100000
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#define SIS_RXSTAT_RUNT 0x00200000
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#define SIS_RXSTAT_GIANT 0x00400000
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#define SIS_RXSTAT_DSTCLASS 0x01800000
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#define SIS_RXSTAT_OVERRUN 0x02000000
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#define SIS_RXSTAT_RX_ABORT 0x04000000
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#define SIS_DSTCLASS_REJECT 0x00000000
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#define SIS_DSTCLASS_UNICAST 0x00800000
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#define SIS_DSTCLASS_MULTICAST 0x01000000
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#define SIS_DSTCLASS_BROADCAST 0x02000000
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#define SIS_TXSTAT_COLLCNT 0x000F0000
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#define SIS_TXSTAT_EXCESSCOLLS 0x00100000
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#define SIS_TXSTAT_OUTOFWINCOLL 0x00200000
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#define SIS_TXSTAT_EXCESS_DEFER 0x00400000
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#define SIS_TXSTAT_DEFERED 0x00800000
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#define SIS_TXSTAT_CARR_LOST 0x01000000
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#define SIS_TXSTAT_UNDERRUN 0x02000000
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#define SIS_TXSTAT_TX_ABORT 0x04000000
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#define SIS_RX_LIST_CNT 64
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#define SIS_TX_LIST_CNT 128
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#define SIS_RX_LIST_SZ SIS_RX_LIST_CNT * sizeof(struct sis_desc)
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#define SIS_TX_LIST_SZ SIS_TX_LIST_CNT * sizeof(struct sis_desc)
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/*
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* SiS PCI vendor ID.
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*/
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#define SIS_VENDORID 0x1039
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/*
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* SiS PCI device IDs
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*/
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#define SIS_DEVICEID_900 0x0900
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#define SIS_DEVICEID_7016 0x7016
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/*
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* SiS 900 PCI revision codes.
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*/
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#define SIS_REV_900B 0x0003
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#define SIS_REV_630A 0x0080
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#define SIS_REV_630E 0x0081
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#define SIS_REV_630S 0x0082
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#define SIS_REV_630EA1 0x0083
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#define SIS_REV_630ET 0x0084
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#define SIS_REV_635 0x0090
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#define SIS_REV_96x 0x0091
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/*
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* NatSemi vendor ID
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*/
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#define NS_VENDORID 0x100B
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/*
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* DP83815 device ID
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*/
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#define NS_DEVICEID_DP83815 0x0020
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struct sis_type {
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u_int16_t sis_vid;
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u_int16_t sis_did;
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char *sis_name;
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};
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struct sis_mii_frame {
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u_int8_t mii_stdelim;
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u_int8_t mii_opcode;
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u_int8_t mii_phyaddr;
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u_int8_t mii_regaddr;
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u_int8_t mii_turnaround;
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u_int16_t mii_data;
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};
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/*
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* MII constants
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*/
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#define SIS_MII_STARTDELIM 0x01
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#define SIS_MII_READOP 0x02
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#define SIS_MII_WRITEOP 0x01
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#define SIS_MII_TURNAROUND 0x02
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#define SIS_TYPE_900 1
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#define SIS_TYPE_7016 2
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#define SIS_TYPE_83815 3
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#define SIS_TYPE_83816 4
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struct sis_softc {
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struct ifnet *sis_ifp; /* interface info */
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bus_space_handle_t sis_bhandle;
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bus_space_tag_t sis_btag;
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struct resource *sis_res;
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struct resource *sis_irq;
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void *sis_intrhand;
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device_t sis_self;
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device_t sis_miibus;
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u_int8_t sis_unit;
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u_int8_t sis_type;
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u_int8_t sis_rev;
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u_int8_t sis_link;
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u_int sis_srr;
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struct sis_desc *sis_rx_list;
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struct sis_desc *sis_tx_list;
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bus_dma_tag_t sis_rx_tag;
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bus_dmamap_t sis_rx_dmamap;
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bus_dma_tag_t sis_tx_tag;
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bus_dmamap_t sis_tx_dmamap;
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bus_dma_tag_t sis_parent_tag;
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bus_dma_tag_t sis_tag;
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struct sis_desc *sis_rx_pdsc;
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int sis_tx_prod;
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int sis_tx_cons;
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int sis_tx_cnt;
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u_int32_t sis_rx_paddr;
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u_int32_t sis_tx_paddr;
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struct callout sis_stat_ch;
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int sis_stopped;
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#ifdef DEVICE_POLLING
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int rxcycles;
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#endif
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int in_tick;
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struct mtx sis_mtx;
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};
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#define SIS_LOCK(_sc) mtx_lock(&(_sc)->sis_mtx)
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#define SIS_UNLOCK(_sc) mtx_unlock(&(_sc)->sis_mtx)
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#define SIS_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->sis_mtx, MA_OWNED)
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/*
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* register space access macros
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*/
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#define CSR_WRITE_4(sc, reg, val) \
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bus_space_write_4(sc->sis_btag, sc->sis_bhandle, reg, val)
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#define CSR_READ_4(sc, reg) \
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bus_space_read_4(sc->sis_btag, sc->sis_bhandle, reg)
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#define CSR_READ_2(sc, reg) \
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bus_space_read_2(sc->sis_btag, sc->sis_bhandle, reg)
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#define SIS_TIMEOUT 1000
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#define ETHER_ALIGN 2
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#define SIS_RXLEN 1536
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#define SIS_MIN_FRAMELEN 60
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/*
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* PCI low memory base and low I/O base register, and
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* other PCI registers.
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*/
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#define SIS_PCI_VENDOR_ID 0x00
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#define SIS_PCI_DEVICE_ID 0x02
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#define SIS_PCI_COMMAND 0x04
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#define SIS_PCI_STATUS 0x06
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#define SIS_PCI_REVID 0x08
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#define SIS_PCI_CLASSCODE 0x09
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#define SIS_PCI_CACHELEN 0x0C
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#define SIS_PCI_LATENCY_TIMER 0x0D
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#define SIS_PCI_HEADER_TYPE 0x0E
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#define SIS_PCI_LOIO 0x10
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#define SIS_PCI_LOMEM 0x14
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#define SIS_PCI_BIOSROM 0x30
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#define SIS_PCI_INTLINE 0x3C
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#define SIS_PCI_INTPIN 0x3D
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#define SIS_PCI_MINGNT 0x3E
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#define SIS_PCI_MINLAT 0x0F
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#define SIS_PCI_RESETOPT 0x48
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#define SIS_PCI_EEPROM_DATA 0x4C
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/* power management registers */
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#define SIS_PCI_CAPID 0x50 /* 8 bits */
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#define SIS_PCI_NEXTPTR 0x51 /* 8 bits */
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#define SIS_PCI_PWRMGMTCAP 0x52 /* 16 bits */
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#define SIS_PCI_PWRMGMTCTRL 0x54 /* 16 bits */
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#define SIS_PSTATE_MASK 0x0003
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#define SIS_PSTATE_D0 0x0000
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#define SIS_PSTATE_D1 0x0001
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#define SIS_PSTATE_D2 0x0002
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#define SIS_PSTATE_D3 0x0003
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#define SIS_PME_EN 0x0010
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#define SIS_PME_STATUS 0x8000
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