1*1b8adde7SWilliam Kucharski /* 2*1b8adde7SWilliam Kucharski * Constants etc. for the Bochs/Etherboot pseudo-NIC 3*1b8adde7SWilliam Kucharski * 4*1b8adde7SWilliam Kucharski * This header file must be valid C and C++. 5*1b8adde7SWilliam Kucharski * 6*1b8adde7SWilliam Kucharski * Operation of the pseudo-NIC (PNIC) is pretty simple. To write a 7*1b8adde7SWilliam Kucharski * command plus data, first write the length of the data to 8*1b8adde7SWilliam Kucharski * PNIC_REG_LEN, then write the data a byte at a type to 9*1b8adde7SWilliam Kucharski * PNIC_REG_DATA, then write the command code to PNIC_REG_CMD. The 10*1b8adde7SWilliam Kucharski * status will be available from PNIC_REG_STAT. The length of any 11*1b8adde7SWilliam Kucharski * data returned will be in PNIC_REG_LEN and can be read a byte at a 12*1b8adde7SWilliam Kucharski * time from PNIC_REG_DATA. 13*1b8adde7SWilliam Kucharski */ 14*1b8adde7SWilliam Kucharski 15*1b8adde7SWilliam Kucharski /* 16*1b8adde7SWilliam Kucharski * PCI parameters 17*1b8adde7SWilliam Kucharski */ 18*1b8adde7SWilliam Kucharski #define PNIC_PCI_VENDOR 0xfefe /* Hopefully these won't clash with */ 19*1b8adde7SWilliam Kucharski #define PNIC_PCI_DEVICE 0xefef /* any real PCI device IDs. */ 20*1b8adde7SWilliam Kucharski 21*1b8adde7SWilliam Kucharski /* 22*1b8adde7SWilliam Kucharski * 'Hardware' register addresses, offset from io_base 23*1b8adde7SWilliam Kucharski */ 24*1b8adde7SWilliam Kucharski #define PNIC_REG_CMD 0x00 /* Command register, 2 bytes, write only */ 25*1b8adde7SWilliam Kucharski #define PNIC_REG_STAT 0x00 /* Status register, 2 bytes, read only */ 26*1b8adde7SWilliam Kucharski #define PNIC_REG_LEN 0x02 /* Length register, 2 bytes, read-write */ 27*1b8adde7SWilliam Kucharski #define PNIC_REG_DATA 0x04 /* Data port, 1 byte, read-write */ 28*1b8adde7SWilliam Kucharski /* 29*1b8adde7SWilliam Kucharski * PNIC_MAX_REG used in Bochs to claim i/o space 30*1b8adde7SWilliam Kucharski */ 31*1b8adde7SWilliam Kucharski #define PNIC_MAX_REG 0x04 32*1b8adde7SWilliam Kucharski 33*1b8adde7SWilliam Kucharski /* 34*1b8adde7SWilliam Kucharski * Command code definitions: write these into PNIC_REG_CMD 35*1b8adde7SWilliam Kucharski */ 36*1b8adde7SWilliam Kucharski #define PNIC_CMD_NOOP 0x0000 37*1b8adde7SWilliam Kucharski #define PNIC_CMD_API_VER 0x0001 38*1b8adde7SWilliam Kucharski #define PNIC_CMD_READ_MAC 0x0002 39*1b8adde7SWilliam Kucharski #define PNIC_CMD_RESET 0x0003 40*1b8adde7SWilliam Kucharski #define PNIC_CMD_XMIT 0x0004 41*1b8adde7SWilliam Kucharski #define PNIC_CMD_RECV 0x0005 42*1b8adde7SWilliam Kucharski #define PNIC_CMD_RECV_QLEN 0x0006 43*1b8adde7SWilliam Kucharski #define PNIC_CMD_MASK_IRQ 0x0007 44*1b8adde7SWilliam Kucharski #define PNIC_CMD_FORCE_IRQ 0x0008 45*1b8adde7SWilliam Kucharski 46*1b8adde7SWilliam Kucharski /* 47*1b8adde7SWilliam Kucharski * Status code definitions: read these from PNIC_REG_STAT 48*1b8adde7SWilliam Kucharski * 49*1b8adde7SWilliam Kucharski * We avoid using status codes that might be confused with 50*1b8adde7SWilliam Kucharski * randomly-read data (e.g. 0x0000, 0xffff etc.) 51*1b8adde7SWilliam Kucharski */ 52*1b8adde7SWilliam Kucharski #define PNIC_STATUS_OK 0x4f4b /* 'OK' */ 53*1b8adde7SWilliam Kucharski #define PNIC_STATUS_UNKNOWN_CMD 0x3f3f /* '??' */ 54*1b8adde7SWilliam Kucharski 55*1b8adde7SWilliam Kucharski /* 56*1b8adde7SWilliam Kucharski * Other miscellaneous information 57*1b8adde7SWilliam Kucharski */ 58*1b8adde7SWilliam Kucharski 59*1b8adde7SWilliam Kucharski #define PNIC_API_VERSION 0x0101 /* 1.1 */ 60