/* $OpenBSD: if_vrreg.h,v 1.20 2007/10/04 01:29:39 brad Exp $ */ /* * Copyright (c) 1997, 1998 * Bill Paul . 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: src/sys/pci/if_vrreg.h,v 1.17 2003/02/01 01:27:05 silby Exp $ */ /* * Rhine register definitions. */ #define VR_PAR0 0x00 /* node address 0 to 4 */ #define VR_PAR1 0x04 /* node address 2 to 6 */ #define VR_RXCFG 0x06 /* receiver config register */ #define VR_TXCFG 0x07 /* transmit config register */ #define VR_COMMAND 0x08 /* command register */ #define VR_ISR 0x0C /* interrupt/status register */ #define VR_IMR 0x0E /* interrupt mask register */ #define VR_MAR0 0x10 /* multicast hash 0 */ #define VR_MAR1 0x14 /* multicast hash 1 */ #define VR_RXADDR 0x18 /* rx descriptor list start addr */ #define VR_TXADDR 0x1C /* tx descriptor list start addr */ #define VR_CURRXDESC0 0x20 #define VR_CURRXDESC1 0x24 #define VR_CURRXDESC2 0x28 #define VR_CURRXDESC3 0x2C #define VR_NEXTRXDESC0 0x30 #define VR_NEXTRXDESC1 0x34 #define VR_NEXTRXDESC2 0x38 #define VR_NEXTRXDESC3 0x3C #define VR_CURTXDESC0 0x40 #define VR_CURTXDESC1 0x44 #define VR_CURTXDESC2 0x48 #define VR_CURTXDESC3 0x4C #define VR_NEXTTXDESC0 0x50 #define VR_NEXTTXDESC1 0x54 #define VR_NEXTTXDESC2 0x58 #define VR_NEXTTXDESC3 0x5C #define VR_CURRXDMA 0x60 /* current RX DMA address */ #define VR_CURTXDMA 0x64 /* current TX DMA address */ #define VR_TALLYCNT 0x68 /* tally counter test register */ #define VR_PHYADDR 0x6C #define VR_MIISTAT 0x6D #define VR_BCR0 0x6E #define VR_BCR1 0x6F #define VR_MIICMD 0x70 #define VR_MIIADDR 0x71 #define VR_MIIDATA 0x72 #define VR_EECSR 0x74 #define VR_TEST 0x75 #define VR_GPIO 0x76 #define VR_CONFIG 0x78 #define VR_MPA_CNT 0x7C #define VR_CRC_CNT 0x7E #define VR_STICKHW 0x83 /* Misc Registers */ #define VR_MISC_CR1 0x81 #define VR_MISCCR1_FORSRST 0x40 /* * RX config bits. */ #define VR_RXCFG_RX_ERRPKTS 0x01 #define VR_RXCFG_RX_RUNT 0x02 #define VR_RXCFG_RX_MULTI 0x04 #define VR_RXCFG_RX_BROAD 0x08 #define VR_RXCFG_RX_PROMISC 0x10 #define VR_RXCFG_RX_THRESH 0xE0 #define VR_RXTHRESH_32BYTES 0x00 #define VR_RXTHRESH_64BYTES 0x20 #define VR_RXTHRESH_128BYTES 0x40 #define VR_RXTHRESH_256BYTES 0x60 #define VR_RXTHRESH_512BYTES 0x80 #define VR_RXTHRESH_768BYTES 0xA0 #define VR_RXTHRESH_1024BYTES 0xC0 #define VR_RXTHRESH_STORENFWD 0xE0 /* * TX config bits. */ #define VR_TXCFG_RSVD0 0x01 #define VR_TXCFG_LOOPBKMODE 0x06 #define VR_TXCFG_BACKOFF 0x08 #define VR_TXCFG_RSVD1 0x10 #define VR_TXCFG_TX_THRESH 0xE0 #define VR_TXTHRESH_32BYTES 0x00 #define VR_TXTHRESH_64BYTES 0x20 #define VR_TXTHRESH_128BYTES 0x40 #define VR_TXTHRESH_256BYTES 0x60 #define VR_TXTHRESH_512BYTES 0x80 #define VR_TXTHRESH_768BYTES 0xA0 #define VR_TXTHRESH_1024BYTES 0xC0 #define VR_TXTHRESH_STORENFWD 0xE0 /* * Command register bits. */ #define VR_CMD_INIT 0x0001 #define VR_CMD_START 0x0002 #define VR_CMD_STOP 0x0004 #define VR_CMD_RX_ON 0x0008 #define VR_CMD_TX_ON 0x0010 #define VR_CMD_TX_GO 0x0020 #define VR_CMD_RX_GO 0x0040 #define VR_CMD_RSVD 0x0080 #define VR_CMD_RX_EARLY 0x0100 #define VR_CMD_TX_EARLY 0x0200 #define VR_CMD_FULLDUPLEX 0x0400 #define VR_CMD_TX_NOPOLL 0x0800 #define VR_CMD_RESET 0x8000 /* * Interrupt status bits. */ #define VR_ISR_RX_OK 0x0001 /* packet rx ok */ #define VR_ISR_TX_OK 0x0002 /* packet tx ok */ #define VR_ISR_RX_ERR 0x0004 /* packet rx with err */ #define VR_ISR_TX_ABRT 0x0008 /* tx aborted due to excess colls */ #define VR_ISR_TX_UNDERRUN 0x0010 /* tx buffer underflow */ #define VR_ISR_RX_NOBUF 0x0020 /* no rx buffer available */ #define VR_ISR_BUSERR 0x0040 /* PCI bus error */ #define VR_ISR_STATSOFLOW 0x0080 /* stats counter oflow */ #define VR_ISR_RX_EARLY 0x0100 /* rx early */ #define VR_ISR_LINKSTAT 0x0200 /* MII status change */ #define VR_ISR_ETI 0x0200 /* Tx early (3043/3071) */ #define VR_ISR_UDFI 0x0200 /* Tx FIFO underflow (3065) */ #define VR_ISR_RX_OFLOW 0x0400 /* rx FIFO overflow */ #define VR_ISR_RX_DROPPED 0x0800 #define VR_ISR_RX_NOBUF2 0x1000 #define VR_ISR_TX_ABRT2 0x2000 #define VR_ISR_LINKSTAT2 0x4000 #define VR_ISR_MAGICPACKET 0x8000 /* * Interrupt mask bits. */ #define VR_IMR_RX_OK 0x0001 /* packet rx ok */ #define VR_IMR_TX_OK 0x0002 /* packet tx ok */ #define VR_IMR_RX_ERR 0x0004 /* packet rx with err */ #define VR_IMR_TX_ABRT 0x0008 /* tx aborted due to excess colls */ #define VR_IMR_TX_UNDERRUN 0x0010 /* tx buffer underflow */ #define VR_IMR_RX_NOBUF 0x0020 /* no rx buffer available */ #define VR_IMR_BUSERR 0x0040 /* PCI bus error */ #define VR_IMR_STATSOFLOW 0x0080 /* stats counter oflow */ #define VR_IMR_RX_EARLY 0x0100 /* rx early */ #define VR_IMR_LINKSTAT 0x0200 /* MII status change */ #define VR_IMR_RX_OFLOW 0x0400 /* rx FIFO overflow */ #define VR_IMR_RX_DROPPED 0x0800 #define VR_IMR_RX_NOBUF2 0x1000 #define VR_IMR_TX_ABRT2 0x2000 #define VR_IMR_LINKSTAT2 0x4000 #define VR_IMR_MAGICPACKET 0x8000 #define VR_INTRS \ (VR_IMR_RX_OK|VR_IMR_TX_OK|VR_IMR_RX_NOBUF| \ VR_IMR_TX_ABRT|VR_IMR_TX_UNDERRUN|VR_IMR_BUSERR| \ VR_IMR_RX_ERR|VR_ISR_RX_DROPPED) /* * MII status register. */ #define VR_MIISTAT_SPEED 0x01 #define VR_MIISTAT_LINKFAULT 0x02 #define VR_MIISTAT_MGTREADERR 0x04 #define VR_MIISTAT_MIIERR 0x08 #define VR_MIISTAT_PHYOPT 0x10 #define VR_MIISTAT_MDC_SPEED 0x20 #define VR_MIISTAT_RSVD 0x40 #define VR_MIISTAT_GPIO1POLL 0x80 /* * MII command register bits. */ #define VR_MIICMD_CLK 0x01 #define VR_MIICMD_DATAOUT 0x02 #define VR_MIICMD_DATAIN 0x04 #define VR_MIICMD_DIR 0x08 #define VR_MIICMD_DIRECTPGM 0x10 #define VR_MIICMD_WRITE_ENB 0x20 #define VR_MIICMD_READ_ENB 0x40 #define VR_MIICMD_AUTOPOLL 0x80 /* * EEPROM control bits. */ #define VR_EECSR_DATAIN 0x01 /* data out */ #define VR_EECSR_DATAOUT 0x02 /* data in */ #define VR_EECSR_CLK 0x04 /* clock */ #define VR_EECSR_CS 0x08 /* chip select */ #define VR_EECSR_DPM 0x10 #define VR_EECSR_LOAD 0x20 #define VR_EECSR_EMBP 0x40 #define VR_EECSR_EEPR 0x80 #define VR_EECMD_WRITE 0x140 #define VR_EECMD_READ 0x180 #define VR_EECMD_ERASE 0x1c0 /* * Test register bits. */ #define VR_TEST_TEST0 0x01 #define VR_TEST_TEST1 0x02 #define VR_TEST_TEST2 0x04 #define VR_TEST_TSTUD 0x08 #define VR_TEST_TSTOV 0x10 #define VR_TEST_BKOFF 0x20 #define VR_TEST_FCOL 0x40 #define VR_TEST_HBDES 0x80 /* * Config register bits. */ #define VR_CFG_GPIO2OUTENB 0x00000001 #define VR_CFG_GPIO2OUT 0x00000002 /* gen. purp. pin */ #define VR_CFG_GPIO2IN 0x00000004 /* gen. purp. pin */ #define VR_CFG_AUTOOPT 0x00000008 /* enable rx/tx autopoll */ #define VR_CFG_MIIOPT 0x00000010 #define VR_CFG_MMIENB 0x00000020 /* memory mapped mode enb */ #define VR_CFG_JUMPER 0x00000040 /* PHY and oper. mode select */ #define VR_CFG_EELOAD 0x00000080 /* enable EEPROM programming */ #define VR_CFG_LATMENB 0x00000100 /* larency timer effect enb. */ #define VR_CFG_MRREADWAIT 0x00000200 #define VR_CFG_MRWRITEWAIT 0x00000400 #define VR_CFG_RX_ARB 0x00000800 #define VR_CFG_TX_ARB 0x00001000 #define VR_CFG_READMULTI 0x00002000 #define VR_CFG_TX_PACE 0x00004000 #define VR_CFG_TX_QDIS 0x00008000 #define VR_CFG_ROMSEL0 0x00010000 #define VR_CFG_ROMSEL1 0x00020000 #define VR_CFG_ROMSEL2 0x00040000 #define VR_CFG_ROMTIMESEL 0x00080000 #define VR_CFG_RSVD0 0x00100000 #define VR_CFG_ROMDLY 0x00200000 #define VR_CFG_ROMOPT 0x00400000 #define VR_CFG_RSVD1 0x00800000 #define VR_CFG_BACKOFFOPT 0x01000000 #define VR_CFG_BACKOFFMOD 0x02000000 #define VR_CFG_CAPEFFECT 0x04000000 #define VR_CFG_BACKOFFRAND 0x08000000 #define VR_CFG_MAGICKPACKET 0x10000000 #define VR_CFG_PCIREADLINE 0x20000000 #define VR_CFG_DIAG 0x40000000 #define VR_CFG_GPIOEN 0x80000000 /* Sticky HW bits */ #define VR_STICKHW_DS0 0x01 #define VR_STICKHW_DS1 0x02 #define VR_STICKHW_WOL_ENB 0x04 #define VR_STICKHW_WOL_STS 0x08 #define VR_STICKHW_LEGWOL_ENB 0x80 /* * BCR0 register bits. (At least for the VT6102 chip.) */ #define VR_BCR0_DMA_LENGTH 0x07 #define VR_BCR0_DMA_32BYTES 0x00 #define VR_BCR0_DMA_64BYTES 0x01 #define VR_BCR0_DMA_128BYTES 0x02 #define VR_BCR0_DMA_256BYTES 0x03 #define VR_BCR0_DMA_512BYTES 0x04 #define VR_BCR0_DMA_1024BYTES 0x05 #define VR_BCR0_DMA_STORENFWD 0x07 #define VR_BCR0_RX_THRESH 0x38 #define VR_BCR0_RXTHRESHCFG 0x00 #define VR_BCR0_RXTHRESH64BYTES 0x08 #define VR_BCR0_RXTHRESH128BYTES 0x10 #define VR_BCR0_RXTHRESH256BYTES 0x18 #define VR_BCR0_RXTHRESH512BYTES 0x20 #define VR_BCR0_RXTHRESH1024BYTES 0x28 #define VR_BCR0_RXTHRESHSTORENFWD 0x38 #define VR_BCR0_EXTLED 0x40 #define VR_BCR0_MED2 0x80 /* * BCR1 register bits. (At least for the VT6102 chip.) */ #define VR_BCR1_POT0 0x01 #define VR_BCR1_POT1 0x02 #define VR_BCR1_POT2 0x04 #define VR_BCR1_TX_THRESH 0x38 #define VR_BCR1_TXTHRESHCFG 0x00 #define VR_BCR1_TXTHRESH64BYTES 0x08 #define VR_BCR1_TXTHRESH128BYTES 0x10 #define VR_BCR1_TXTHRESH256BYTES 0x18 #define VR_BCR1_TXTHRESH512BYTES 0x20 #define VR_BCR1_TXTHRESH1024BYTES 0x28 #define VR_BCR1_TXTHRESHSTORENFWD 0x38 /* * Rhine TX/RX list structure. */ struct vr_desc { u_int32_t vr_status; u_int32_t vr_ctl; u_int32_t vr_data; u_int32_t vr_next; }; #define VR_RXSTAT_RXERR 0x00000001 #define VR_RXSTAT_CRCERR 0x00000002 #define VR_RXSTAT_FRAMEALIGNERR 0x00000004 #define VR_RXSTAT_FIFOOFLOW 0x00000008 #define VR_RXSTAT_GIANT 0x00000010 #define VR_RXSTAT_RUNT 0x00000020 #define VR_RXSTAT_BUSERR 0x00000040 #define VR_RXSTAT_BUFFERR 0x00000080 #define VR_RXSTAT_LASTFRAG 0x00000100 #define VR_RXSTAT_FIRSTFRAG 0x00000200 #define VR_RXSTAT_RLINK 0x00000400 #define VR_RXSTAT_RX_PHYS 0x00000800 #define VR_RXSTAT_RX_BROAD 0x00001000 #define VR_RXSTAT_RX_MULTI 0x00002000 #define VR_RXSTAT_RX_OK 0x00004000 #define VR_RXSTAT_RXLEN 0x07FF0000 #define VR_RXSTAT_RXLEN_EXT 0x78000000 #define VR_RXSTAT_OWN 0x80000000 #define VR_RXBYTES(x) ((x & VR_RXSTAT_RXLEN) >> 16) #define VR_RXSTAT (VR_RXSTAT_FIRSTFRAG|VR_RXSTAT_LASTFRAG|VR_RXSTAT_OWN) #define VR_RXCTL_BUFLEN 0x000007FF #define VR_RXCTL_BUFLEN_EXT 0x00007800 #define VR_RXCTL_CHAIN 0x00008000 #define VR_RXCTL_RX_INTR 0x00800000 #define VR_RXCTL (VR_RXCTL_CHAIN|VR_RXCTL_RX_INTR) #define VR_TXSTAT_DEFER 0x00000001 #define VR_TXSTAT_UNDERRUN 0x00000002 #define VR_TXSTAT_COLLCNT 0x00000078 #define VR_TXSTAT_SQE 0x00000080 #define VR_TXSTAT_ABRT 0x00000100 #define VR_TXSTAT_LATECOLL 0x00000200 #define VR_TXSTAT_CARRLOST 0x00000400 #define VR_TXSTAT_UDF 0x00000800 #define VR_TXSTAT_BUSERR 0x00002000 #define VR_TXSTAT_JABTIMEO 0x00004000 #define VR_TXSTAT_ERRSUM 0x00008000 #define VR_TXSTAT_OWN 0x80000000 #define VR_TXCTL_BUFLEN 0x000007FF #define VR_TXCTL_BUFLEN_EXT 0x00007800 #define VR_TXCTL_TLINK 0x00008000 #define VR_TXCTL_FIRSTFRAG 0x00200000 #define VR_TXCTL_LASTFRAG 0x00400000 #define VR_TXCTL_FINT 0x00800000 #define VR_MAXFRAGS 16 #define VR_RX_LIST_CNT 64 #define VR_TX_LIST_CNT 128 #define VR_MIN_FRAMELEN 60 #define VR_RXLEN 1524 #define VR_TXOWN(x) x->vr_ptr->vr_status struct vr_list_data { struct vr_desc vr_rx_list[VR_RX_LIST_CNT]; struct vr_desc vr_tx_list[VR_TX_LIST_CNT]; }; struct vr_chain { struct vr_desc *vr_ptr; struct mbuf *vr_mbuf; struct vr_chain *vr_nextdesc; bus_addr_t vr_paddr; bus_dmamap_t vr_map; }; struct vr_chain_onefrag { struct vr_desc *vr_ptr; struct vr_chain_onefrag *vr_nextdesc; u_int8_t *vr_buf; bus_addr_t vr_paddr; bus_dmamap_t vr_map; }; struct vr_chain_data { struct vr_chain_onefrag vr_rx_chain[VR_RX_LIST_CNT]; struct vr_chain vr_tx_chain[VR_TX_LIST_CNT]; struct vr_chain_onefrag *vr_rx_head; struct vr_chain *vr_tx_cons; struct vr_chain *vr_tx_prod; }; struct vr_type { u_int16_t vr_vid; u_int16_t vr_did; char *vr_name; }; struct vr_mii_frame { u_int8_t mii_stdelim; u_int8_t mii_opcode; u_int8_t mii_phyaddr; u_int8_t mii_regaddr; u_int8_t mii_turnaround; u_int16_t mii_data; }; /* * MII constants */ #define VR_MII_STARTDELIM 0x01 #define VR_MII_READOP 0x02 #define VR_MII_WRITEOP 0x01 #define VR_MII_TURNAROUND 0x02 #define VR_FLAG_FORCEDELAY 1 #define VR_FLAG_SCHEDDELAY 2 #define VR_FLAG_DELAYTIMEO 3 struct vr_softc { struct device sc_dev; /* generic device structure */ void * sc_ih; /* interrupt handler cookie */ struct arpcom arpcom; /* interface info */ bus_space_handle_t vr_bhandle; /* bus space handle */ bus_space_tag_t vr_btag; /* bus space tag */ bus_dma_tag_t sc_dmat; struct vr_type *vr_info; /* Rhine adapter info */ u_int8_t vr_revid; /* Rhine chip revision */ u_int8_t vr_flags; /* See VR_F_* below */ struct vr_list_data *vr_ldata; struct vr_chain_data vr_cdata; struct mii_data sc_mii; struct timeout sc_to; bus_dmamap_t sc_listmap; /* descriptor list map */ bus_dma_segment_t sc_listseg; int sc_if_flags; }; #define VR_F_RESTART 0x01 /* Restart unit on next tick */ /* * register space access macros */ #define CSR_WRITE_4(sc, reg, val) \ bus_space_write_4(sc->vr_btag, sc->vr_bhandle, reg, val) #define CSR_WRITE_2(sc, reg, val) \ bus_space_write_2(sc->vr_btag, sc->vr_bhandle, reg, val) #define CSR_WRITE_1(sc, reg, val) \ bus_space_write_1(sc->vr_btag, sc->vr_bhandle, reg, val) #define CSR_READ_4(sc, reg) \ bus_space_read_4(sc->vr_btag, sc->vr_bhandle, reg) #define CSR_READ_2(sc, reg) \ bus_space_read_2(sc->vr_btag, sc->vr_bhandle, reg) #define CSR_READ_1(sc, reg) \ bus_space_read_1(sc->vr_btag, sc->vr_bhandle, reg) #define VR_TIMEOUT 1000 /* * General constants that are fun to know. * * VIA vendor ID */ #define VIA_VENDORID 0x1106 /* * VIA Rhine device IDs. */ #define VIA_DEVICEID_RHINE 0x3043 #define VIA_DEVICEID_RHINE_II 0x6100 #define VIA_DEVICEID_RHINE_II_2 0x3065 #define VIA_DEVICEID_RHINE_III 0x3106 #define VIA_DEVICEID_RHINE_III_M 0x3053 /* * Delta Electronics device ID. */ #define DELTA_VENDORID 0x1500 /* * Delta device IDs. */ #define DELTA_DEVICEID_RHINE_II 0x1320 /* * Addtron vendor ID. */ #define ADDTRON_VENDORID 0x4033 /* * Addtron device IDs. */ #define ADDTRON_DEVICEID_RHINE_II 0x1320 /* * VIA Rhine revision IDs */ #define REV_ID_VT3043_E 0x04 #define REV_ID_VT3071_A 0x20 #define REV_ID_VT3071_B 0x21 #define REV_ID_VT3065_A 0x40 #define REV_ID_VT3065_B 0x41 #define REV_ID_VT3065_C 0x42 #define REV_ID_VT6102_APOLLO 0x74 #define REV_ID_VT6103 0x78 #define REV_ID_VT3106 0x80 #define REV_ID_VT3106_J 0x80 /* 0x80-0x8F */ #define REV_ID_VT3106_S 0x90 /* 0x90-0xA0 */ /* * PCI low memory base and low I/O base register, and * other PCI registers. */ #define VR_PCI_VENDOR_ID 0x00 #define VR_PCI_DEVICE_ID 0x02 #define VR_PCI_COMMAND 0x04 #define VR_PCI_STATUS 0x06 #define VR_PCI_REVID 0x08 #define VR_PCI_CLASSCODE 0x09 #define VR_PCI_LATENCY_TIMER 0x0D #define VR_PCI_HEADER_TYPE 0x0E #define VR_PCI_LOIO 0x10 #define VR_PCI_LOMEM 0x14 #define VR_PCI_BIOSROM 0x30 #define VR_PCI_INTLINE 0x3C #define VR_PCI_INTPIN 0x3D #define VR_PCI_MINGNT 0x3E #define VR_PCI_MINLAT 0x0F #define VR_PCI_RESETOPT 0x48 #define VR_PCI_EEPROM_DATA 0x4C #define VR_PCI_MODE 0x50 #define VR_MODE3_MIION 0x04 /* power management registers */ #define VR_PCI_CAPID 0xDC /* 8 bits */ #define VR_PCI_NEXTPTR 0xDD /* 8 bits */ #define VR_PCI_PWRMGMTCAP 0xDE /* 16 bits */ #define VR_PCI_PWRMGMTCTRL 0xE0 /* 16 bits */ #define VR_PSTATE_MASK 0x0003 #define VR_PSTATE_D0 0x0000 #define VR_PSTATE_D1 0x0002 #define VR_PSTATE_D2 0x0002 #define VR_PSTATE_D3 0x0003 #define VR_PME_EN 0x0010 #define VR_PME_STATUS 0x8000