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freebsd-nq/sys/pci/if_pcnreg.h
Brooks Davis fc74a9f93a Stop embedding struct ifnet at the top of driver softcs. Instead the 
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
2005-06-10 16:49:24 +00:00

539 lines
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/*-
* Copyright (c) 2000 Berkeley Software Design, Inc.
* Copyright (c) 1997, 1998, 1999, 2000
* Bill Paul <wpaul@ee.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* I/O map in 16-bit mode. To switch to 32-bit mode,
* you need to perform a 32-bit write to the RDP register
* (writing a 0 is recommended).
*/
#define PCN_IO16_APROM00 0x00
#define PCN_IO16_APROM01 0x02
#define PCN_IO16_APROM02 0x04
#define PCN_IO16_APROM03 0x06
#define PCN_IO16_APROM04 0x08
#define PCN_IO16_APROM05 0x0A
#define PCN_IO16_APROM06 0x0C
#define PCN_IO16_APROM07 0x0E
#define PCN_IO16_RDP 0x10
#define PCN_IO16_RAP 0x12
#define PCN_IO16_RESET 0x14
#define PCN_IO16_BDP 0x16
/*
* I/O map in 32-bit mode.
*/
#define PCN_IO32_APROM00 0x00
#define PCN_IO32_APROM01 0x04
#define PCN_IO32_APROM02 0x08
#define PCN_IO32_APROM03 0x0C
#define PCN_IO32_RDP 0x10
#define PCN_IO32_RAP 0x14
#define PCN_IO32_RESET 0x18
#define PCN_IO32_BDP 0x1C
/*
* CSR registers
*/
#define PCN_CSR_CSR 0x00
#define PCN_CSR_IAB0 0x01
#define PCN_CSR_IAB1 0x02
#define PCN_CSR_IMR 0x03
#define PCN_CSR_TFEAT 0x04
#define PCN_CSR_EXTCTL1 0x05
#define PCN_CSR_DTBLLEN 0x06
#define PCN_CSR_EXTCTL2 0x07
#define PCN_CSR_MAR0 0x08
#define PCN_CSR_MAR1 0x09
#define PCN_CSR_MAR2 0x0A
#define PCN_CSR_MAR3 0x0B
#define PCN_CSR_PAR0 0x0C
#define PCN_CSR_PAR1 0x0D
#define PCN_CSR_PAR2 0x0E
#define PCN_CSR_MODE 0x0F
#define PCN_CSR_RXADDR0 0x18
#define PCN_CSR_RXADDR1 0x19
#define PCN_CSR_TXADDR0 0x1E
#define PCN_CSR_TXADDR1 0x1F
#define PCN_CSR_TXPOLL 0x2F
#define PCN_CSR_RXPOLL 0x31
#define PCN_CSR_RXRINGLEN 0x4C
#define PCN_CSR_TXRINGLEN 0x4E
#define PCN_CSR_DMACTL 0x50
#define PCN_CSR_BUSTIMER 0x52
#define PCN_CSR_MEMERRTIMEO 0x64
#define PCN_CSR_ONNOWMISC 0x74
#define PCN_CSR_ADVFEAT 0x7A
#define PCN_CSR_MACCFG 0x7D
#define PCN_CSR_CHIPID0 0x58
#define PCN_CSR_CHIPID1 0x59
/*
* Control and status register (CSR0)
*/
#define PCN_CSR_INIT 0x0001
#define PCN_CSR_START 0x0002
#define PCN_CSR_STOP 0x0004
#define PCN_CSR_TX 0x0008
#define PCN_CSR_TXON 0x0010
#define PCN_CSR_RXON 0x0020
#define PCN_CSR_INTEN 0x0040
#define PCN_CSR_INTR 0x0080
#define PCN_CSR_IDONE 0x0100
#define PCN_CSR_TINT 0x0200
#define PCN_CSR_RINT 0x0400
#define PCN_CSR_MERR 0x0800
#define PCN_CSR_MISS 0x1000
#define PCN_CSR_CERR 0x2000
#define PCN_CSR_ERR 0x8000
/*
* Interrupt masks and deferral control (CSR3)
*/
#define PCN_IMR_BSWAP 0x0004
#define PCN_IMR_ENMBA 0x0008 /* enable modified backoff alg */
#define PCN_IMR_DXMT2PD 0x0010
#define PCN_IMR_LAPPEN 0x0020 /* lookahead packet processing enb */
#define PCN_IMR_DXSUFLO 0x0040 /* disable TX stop on underflow */
#define PCN_IMR_IDONE 0x0100
#define PCN_IMR_TINT 0x0200
#define PCN_IMR_RINT 0x0400
#define PCN_IMR_MERR 0x0800
#define PCN_IMR_MISS 0x1000
/*
* Test and features control (CSR4)
*/
#define PCN_TFEAT_TXSTRTMASK 0x0004
#define PCN_TFEAT_TXSTRT 0x0008
#define PCN_TFEAT_RXCCOFLOWM 0x0010 /* Rx collision counter oflow */
#define PCN_TFEAT_RXCCOFLOW 0x0020
#define PCN_TFEAT_UINT 0x0040
#define PCN_TFEAT_UINTREQ 0x0080
#define PCN_TFEAT_MISSOFLOWM 0x0100
#define PCN_TFEAT_MISSOFLOW 0x0200
#define PCN_TFEAT_STRIP_FCS 0x0400
#define PCN_TFEAT_PAD_TX 0x0800
#define PCN_TFEAT_TXDPOLL 0x1000
#define PCN_TFEAT_DMAPLUS 0x4000
/*
* Extended control and interrupt 1 (CSR5)
*/
#define PCN_EXTCTL1_SPND 0x0001 /* suspend */
#define PCN_EXTCTL1_MPMODE 0x0002 /* magic packet mode */
#define PCN_EXTCTL1_MPENB 0x0004 /* magic packet enable */
#define PCN_EXTCTL1_MPINTEN 0x0008 /* magic packet interrupt enable */
#define PCN_EXTCTL1_MPINT 0x0010 /* magic packet interrupt */
#define PCN_EXTCTL1_MPPLBA 0x0020 /* magic packet phys. logical bcast */
#define PCN_EXTCTL1_EXDEFEN 0x0040 /* excessive deferral interrupt enb. */
#define PCN_EXTCTL1_EXDEF 0x0080 /* excessive deferral interrupt */
#define PCN_EXTCTL1_SINTEN 0x0400 /* system interrupt enable */
#define PCN_EXTCTL1_SINT 0x0800 /* system interrupt */
#define PCN_EXTCTL1_LTINTEN 0x4000 /* last TX interrupt enb */
#define PCN_EXTCTL1_TXOKINTD 0x8000 /* TX OK interrupt disable */
/*
* RX/TX descriptor len (CSR6)
*/
#define PCN_DTBLLEN_RLEN 0x0F00
#define PCN_DTBLLEN_TLEN 0xF000
/*
* Extended control and interrupt 2 (CSR7)
*/
#define PCN_EXTCTL2_MIIPDTINTE 0x0001
#define PCN_EXTCTL2_MIIPDTINT 0x0002
#define PCN_EXTCTL2_MCCIINTE 0x0004
#define PCN_EXTCTL2_MCCIINT 0x0008
#define PCN_EXTCTL2_MCCINTE 0x0010
#define PCN_EXTCTL2_MCCINT 0x0020
#define PCN_EXTCTL2_MAPINTE 0x0040
#define PCN_EXTCTL2_MAPINT 0x0080
#define PCN_EXTCTL2_MREINTE 0x0100
#define PCN_EXTCTL2_MREINT 0x0200
#define PCN_EXTCTL2_STINTE 0x0400
#define PCN_EXTCTL2_STINT 0x0800
#define PCN_EXTCTL2_RXDPOLL 0x1000
#define PCN_EXTCTL2_RDMD 0x2000
#define PCN_EXTCTL2_RXFRTG 0x4000
#define PCN_EXTCTL2_FASTSPNDE 0x8000
/*
* Mode (CSR15)
*/
#define PCN_MODE_RXD 0x0001 /* RX disable */
#define PCN_MODE_TXD 0x0002 /* TX disable */
#define PCN_MODE_LOOP 0x0004 /* loopback enable */
#define PCN_MODE_TXCRCD 0x0008
#define PCN_MODE_FORCECOLL 0x0010
#define PCN_MODE_RETRYD 0x0020
#define PCN_MODE_INTLOOP 0x0040
#define PCN_MODE_PORTSEL 0x0180
#define PCN_MODE_RXVPAD 0x2000
#define PCN_MODE_RXNOBROAD 0x4000
#define PCN_MODE_PROMISC 0x8000
/* Settings for PCN_MODE_PORTSEL when ASEL (BCR2[1] is 0 */
#define PCN_PORT_AUI 0x0000
#define PCN_PORT_10BASET 0x0080
#define PCN_PORT_GPSI 0x0100
#define PCN_PORT_MII 0x0180
/*
* Chip ID values.
*/
/* CSR88-89: Chip ID masks */
#define AMD_MASK 0x003
#define PART_MASK 0xffff
#define Am79C960 0x0003
#define Am79C961 0x2260
#define Am79C961A 0x2261
#define Am79C965 0x2430
#define Am79C970 0x0242
#define Am79C970A 0x2621
#define Am79C971 0x2623
#define Am79C972 0x2624
#define Am79C973 0x2625
#define Am79C978 0x2626
#define Am79C975 0x2627
#define Am79C976 0x2628
/*
* Advanced feature control (CSR122)
*/
#define PCN_AFC_RXALIGN 0x0001
/*
* BCR (bus control) registers
*/
#define PCN_BCR_MMRA 0x00 /* Master Mode Read Active */
#define PCN_BCR_MMW 0x01 /* Master Mode Write Active */
#define PCN_BCR_MISCCFG 0x02
#define PCN_BCR_LED0 0x04
#define PCN_BCR_LED1 0x05
#define PCN_BCR_LED2 0x06
#define PCN_BCR_LED3 0x07
#define PCN_BCR_DUPLEX 0x09
#define PCN_BCR_BUSCTL 0x12
#define PCN_BCR_EECTL 0x13
#define PCN_BCR_SSTYLE 0x14
#define PCN_BCR_PCILAT 0x16
#define PCN_BCR_PCISUBVENID 0x17
#define PCN_BCR_PCISUBSYSID 0x18
#define PCN_BCR_SRAMSIZE 0x19
#define PCN_BCR_SRAMBOUND 0x1A
#define PCN_BCR_SRAMCTL 0x1B
#define PCN_BCR_MIICTL 0x20
#define PCN_BCR_MIIADDR 0x21
#define PCN_BCR_MIIDATA 0x22
#define PCN_BCR_PCIVENID 0x23
#define PCN_BCR_PCIPCAP 0x24
#define PCN_BCR_DATA0 0x25
#define PCN_BCR_DATA1 0x26
#define PCN_BCR_DATA2 0x27
#define PCN_BCR_DATA3 0x28
#define PCN_BCR_DATA4 0x29
#define PCN_BCR_DATA5 0x2A
#define PCN_BCR_DATA6 0x2B
#define PCN_BCR_DATA7 0x2C
#define PCN_BCR_ONNOWPAT0 0x2D
#define PCN_BCR_ONNOWPAT1 0x2E
#define PCN_BCR_ONNOWPAT2 0x2F
#define PCN_BCR_PHYSEL 0x31
/*
* Miscellaneous Configuration (BCR2)
*/
#define PCN_MISC_TMAULOOP 1<<14 /* T-MAU Loopback packet enable. */
#define PCN_MISC_LEDPE 1<<12 /* LED Program Enable */
#define PCN_MISC_APROMWE 1<<8 /* Address PROM Write Enable */
#define PCN_MISC_INTLEVEL 1<<7 /* Interrupt level */
#define PCN_MISC_EADISEL 1<<3 /* EADI Select */
#define PCN_MISC_AWAKE 1<<2 /* Power saving mode select */
#define PCN_MISC_ASEL 1<<1 /* Auto Select */
#define PCN_MISC_XMAUSEL 1<<0 /* Reserved. */
/*
* Full duplex control (BCR9)
*/
#define PCN_DUPLEX_FDEN 0x0001 /* Full-duplex enable */
#define PCN_DUPLEX_AUI 0x0002 /* AUI full-duplex */
#define PCN_DUPLEX_FDRPAD 0x0004 /* Full-duplex runt pkt accept dis. */
/*
* Burst and bus control register (BCR18)
*/
#define PCN_BUSCTL_BWRITE 0x0020
#define PCN_BUSCTL_BREAD 0x0040
#define PCN_BUSCTL_DWIO 0x0080
#define PCN_BUSCTL_EXTREQ 0x0100
#define PCN_BUSCTL_MEMCMD 0x0200
#define PCN_BUSCTL_NOUFLOW 0x0800
#define PCN_BUSCTL_ROMTMG 0xF000
/*
* EEPROM control (BCR19)
*/
#define PCN_EECTL_EDATA 0x0001
#define PCN_EECTL_ECLK 0x0002
#define PCN_EECTL_EECS 0x0004
#define PCN_EECTL_EEN 0x0100
#define PCN_EECTL_EEDET 0x2000
#define PCN_EECTL_PREAD 0x4000
#define PCN_EECTL_PVALID 0x8000
/*
* Software style (BCR20)
*/
#define PCN_SSTYLE_APERREN 0x0400 /* advanced parity error checking */
#define PCN_SSTYLE_SSIZE32 0x0100
#define PCN_SSTYLE_SWSTYLE 0x00FF
#define PCN_SWSTYLE_LANCE 0x0000
#define PCN_SWSTYLE_PCNETPCI 0x0102
#define PCN_SWSTYLE_PCNETPCI_BURST 0x0103
/*
* MII control and status (BCR32)
*/
#define PCN_MIICTL_MIILP 0x0002 /* MII internal loopback */
#define PCN_MIICTL_XPHYSP 0x0008 /* external PHY speed */
#define PCN_MIICTL_XPHYFD 0x0010 /* external PHY full duplex */
#define PCN_MIICTL_XPHYANE 0x0020 /* external phy auto-neg enable */
#define PCN_MIICTL_XPHYRST 0x0040 /* external PHY reset */
#define PCN_MIICTL_DANAS 0x0080 /* disable auto-neg auto-setup */
#define PCN_MIICTL_APDW 0x0700 /* auto-poll dwell time */
#define PCN_MIICTL_APEP 0x0100 /* auto-poll external PHY */
#define PCN_MIICTL_FMDC 0x3000 /* data clock speed */
#define PCN_MIICTL_MIIPD 0x4000 /* PHY detect */
#define PCN_MIICTL_ANTST 0x8000 /* Manufacturing test */
/*
* MII address register (BCR33)
*/
#define PCN_MIIADDR_REGAD 0x001F
#define PCN_MIIADDR_PHYADD 0x03E0
/*
* MII data register (BCR34)
*/
#define PCN_MIIDATA_MIIMD 0xFFFF
/*
* PHY selection (BCR49) (HomePNA NIC only)
*/
#define PCN_PHYSEL_PHYSEL 0x0003
#define PCN_PHYSEL_DEFAULT 0x0300
#define PCN_PHYSEL_PCNET 0x8000
#define PCN_PHY_10BT 0x0000
#define PCN_PHY_HOMEPNA 0x0001
#define PCN_PHY_EXTERNAL 0x0002
struct pcn_rx_desc {
u_int16_t pcn_rxlen;
u_int16_t pcn_rsvd0;
u_int16_t pcn_bufsz;
u_int16_t pcn_rxstat;
u_int32_t pcn_rbaddr;
u_int32_t pcn_uspace;
};
#define PCN_RXSTAT_BPE 0x0080 /* bus parity error */
#define PCN_RXSTAT_ENP 0x0100 /* end of packet */
#define PCN_RXSTAT_STP 0x0200 /* start of packet */
#define PCN_RXSTAT_BUFF 0x0400 /* buffer error */
#define PCN_RXSTAT_CRC 0x0800 /* CRC error */
#define PCN_RXSTAT_OFLOW 0x1000 /* rx overrun */
#define PCN_RXSTAT_FRAM 0x2000 /* framing error */
#define PCN_RXSTAT_ERR 0x4000 /* error summary */
#define PCN_RXSTAT_OWN 0x8000
#define PCN_RXLEN_MBO 0xF000
#define PCN_RXLEN_BUFSZ 0x0FFF
#define PCN_OWN_RXDESC(x) (((x)->pcn_rxstat & PCN_RXSTAT_OWN) == 0)
struct pcn_tx_desc {
u_int32_t pcn_txstat;
u_int32_t pcn_txctl;
u_int32_t pcn_tbaddr;
u_int32_t pcn_uspace;
};
#define PCN_TXSTAT_TRC 0x0000000F /* transmit retries */
#define PCN_TXSTAT_RTRY 0x04000000 /* retry */
#define PCN_TXSTAT_LCAR 0x08000000 /* lost carrier */
#define PCN_TXSTAT_LCOL 0x10000000 /* late collision */
#define PCN_TXSTAT_EXDEF 0x20000000 /* excessive deferrals */
#define PCN_TXSTAT_UFLOW 0x40000000 /* transmit underrun */
#define PCN_TXSTAT_BUFF 0x80000000 /* buffer error */
#define PCN_TXCTL_OWN 0x80000000
#define PCN_TXCTL_ERR 0x40000000 /* error summary */
#define PCN_TXCTL_ADD_FCS 0x20000000 /* add FCS to pkt */
#define PCN_TXCTL_MORE_LTINT 0x10000000
#define PCN_TXCTL_ONE 0x08000000
#define PCN_TXCTL_DEF 0x04000000
#define PCN_TXCTL_STP 0x02000000
#define PCN_TXCTL_ENP 0x01000000
#define PCN_TXCTL_BPE 0x00800000
#define PCN_TXCTL_MBO 0x0000F000
#define PCN_TXCTL_BUFSZ 0x00000FFF
#define PCN_OWN_TXDESC(x) (((x)->pcn_txctl & PCN_TXCTL_OWN) == 0)
#define PCN_RX_LIST_CNT 64
#define PCN_TX_LIST_CNT 256
struct pcn_list_data {
struct pcn_rx_desc pcn_rx_list[PCN_RX_LIST_CNT];
struct pcn_tx_desc pcn_tx_list[PCN_TX_LIST_CNT];
};
struct pcn_ring_data {
struct mbuf *pcn_rx_chain[PCN_RX_LIST_CNT];
struct mbuf *pcn_tx_chain[PCN_TX_LIST_CNT];
int pcn_rx_prod;
int pcn_tx_prod;
int pcn_tx_cons;
int pcn_tx_cnt;
};
/*
* AMD PCI vendor ID.
*/
#define PCN_VENDORID 0x1022
/*
* AMD PCnet/PCI device IDs
*/
#define PCN_DEVICEID_PCNET 0x2000
#define PCN_DEVICEID_HOME 0x2001
struct pcn_type {
u_int16_t pcn_vid;
u_int16_t pcn_did;
char *pcn_name;
};
struct pcn_softc {
struct ifnet *pcn_ifp;
bus_space_handle_t pcn_bhandle;
bus_space_tag_t pcn_btag;
struct resource *pcn_res;
struct resource *pcn_irq;
void *pcn_intrhand;
device_t pcn_miibus;
u_int8_t pcn_unit;
u_int8_t pcn_link;
u_int8_t pcn_phyaddr;
int pcn_if_flags;
int pcn_type;
struct pcn_list_data *pcn_ldata;
struct pcn_ring_data pcn_cdata;
struct callout_handle pcn_stat_ch;
struct mtx pcn_mtx;
};
#define PCN_LOCK(_sc) mtx_lock(&(_sc)->pcn_mtx)
#define PCN_UNLOCK(_sc) mtx_unlock(&(_sc)->pcn_mtx)
#define PCN_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->pcn_mtx, MA_OWNED)
/*
* register space access macros
*/
#define CSR_WRITE_4(sc, reg, val) \
bus_space_write_4(sc->pcn_btag, sc->pcn_bhandle, reg, val)
#define CSR_READ_4(sc, reg) \
bus_space_read_4(sc->pcn_btag, sc->pcn_bhandle, reg)
#define CSR_WRITE_2(sc, reg, val) \
bus_space_write_2(sc->pcn_btag, sc->pcn_bhandle, reg, val)
#define CSR_READ_2(sc, reg) \
bus_space_read_2(sc->pcn_btag, sc->pcn_bhandle, reg)
#define PCN_TIMEOUT 1000
#define ETHER_ALIGN 2
#define PCN_RXLEN 1536
#define PCN_MIN_FRAMELEN 60
#define PCN_INC(x, y) (x) = (x + 1) % y
/*
* PCI low memory base and low I/O base register, and
* other PCI registers.
*/
#define PCN_PCI_VENDOR_ID 0x00
#define PCN_PCI_DEVICE_ID 0x02
#define PCN_PCI_COMMAND 0x04
#define PCN_PCI_STATUS 0x06
#define PCN_PCI_REVID 0x08
#define PCN_PCI_CLASSCODE 0x09
#define PCN_PCI_CACHELEN 0x0C
#define PCN_PCI_LATENCY_TIMER 0x0D
#define PCN_PCI_HEADER_TYPE 0x0E
#define PCN_PCI_LOIO 0x10
#define PCN_PCI_LOMEM 0x14
#define PCN_PCI_BIOSROM 0x30
#define PCN_PCI_INTLINE 0x3C
#define PCN_PCI_INTPIN 0x3D
#define PCN_PCI_MINGNT 0x3E
#define PCN_PCI_MINLAT 0x3F
#define PCN_PCI_RESETOPT 0x48
#define PCN_PCI_EEPROM_DATA 0x4C
/* power management registers */
#define PCN_PCI_CAPID 0x50 /* 8 bits */
#define PCN_PCI_NEXTPTR 0x51 /* 8 bits */
#define PCN_PCI_PWRMGMTCAP 0x52 /* 16 bits */
#define PCN_PCI_PWRMGMTCTRL 0x54 /* 16 bits */
#define PCN_PSTATE_MASK 0x0003
#define PCN_PSTATE_D0 0x0000
#define PCN_PSTATE_D1 0x0001
#define PCN_PSTATE_D2 0x0002
#define PCN_PSTATE_D3 0x0003
#define PCN_PME_EN 0x0010
#define PCN_PME_STATUS 0x8000
#ifdef __alpha__
#undef vtophys
#define vtophys(va) alpha_XXX_dmamap((vm_offset_t)va)
#endif
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