Return to pnic_api.h CVS log

Up to [Qemu by Fabrice Bellard] / qemu / roms / ipxe / src / drivers / net

Annotation of qemu/roms/ipxe/src/drivers/net/pnic_api.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Constants etc. for the Bochs/Etherboot pseudo-NIC
                      3:  * 
                      4:  * This header file must be valid C and C++.
                      5:  *
                      6:  * Operation of the pseudo-NIC (PNIC) is pretty simple.  To write a
                      7:  * command plus data, first write the length of the data to
                      8:  * PNIC_REG_LEN, then write the data a byte at a type to
                      9:  * PNIC_REG_DATA, then write the command code to PNIC_REG_CMD.  The
                     10:  * status will be available from PNIC_REG_STAT.  The length of any
                     11:  * data returned will be in PNIC_REG_LEN and can be read a byte at a
                     12:  * time from PNIC_REG_DATA.
                     13:  */
                     14: 
                     15: FILE_LICENCE ( GPL2_OR_LATER );
                     16: 
                     17: /*
                     18:  * PCI parameters
                     19:  */
                     20: #define PNIC_PCI_VENDOR        0xfefe  /* Hopefully these won't clash with */
                     21: #define PNIC_PCI_DEVICE 0xefef /* any real PCI device IDs.         */
                     22: 
                     23: /*
                     24:  * 'Hardware' register addresses, offset from io_base
                     25:  */
                     26: #define PNIC_REG_CMD   0x00    /* Command register, 2 bytes, write only */
                     27: #define PNIC_REG_STAT  0x00    /* Status register, 2 bytes, read only */
                     28: #define PNIC_REG_LEN   0x02    /* Length register, 2 bytes, read-write */
                     29: #define PNIC_REG_DATA  0x04    /* Data port, 1 byte, read-write */
                     30: /*
                     31:  * PNIC_MAX_REG used in Bochs to claim i/o space
                     32:  */
                     33: #define PNIC_MAX_REG   0x04
                     34: 
                     35: /*
                     36:  * Command code definitions: write these into PNIC_REG_CMD
                     37:  */
                     38: #define PNIC_CMD_NOOP          0x0000
                     39: #define PNIC_CMD_API_VER       0x0001
                     40: #define PNIC_CMD_READ_MAC      0x0002
                     41: #define PNIC_CMD_RESET         0x0003
                     42: #define PNIC_CMD_XMIT          0x0004
                     43: #define PNIC_CMD_RECV          0x0005
                     44: #define PNIC_CMD_RECV_QLEN     0x0006
                     45: #define PNIC_CMD_MASK_IRQ      0x0007
                     46: #define PNIC_CMD_FORCE_IRQ     0x0008
                     47: 
                     48: /*
                     49:  * Status code definitions: read these from PNIC_REG_STAT
                     50:  *
                     51:  * We avoid using status codes that might be confused with
                     52:  * randomly-read data (e.g. 0x0000, 0xffff etc.)
                     53:  */
                     54: #define PNIC_STATUS_OK         0x4f4b          /* 'OK' */
                     55: #define PNIC_STATUS_UNKNOWN_CMD        0x3f3f          /* '??' */
                     56: 
                     57: /*
                     58:  * Other miscellaneous information
                     59:  */
                     60: 
                     61: #define PNIC_API_VERSION       0x0101          /* 1.1 */

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.