c51cd5fe91
Before safecopies, the IO_ENDPT and DL_ENDPT message fields were needed to know which actual process to copy data from/to, as that process may not always be the caller. Now that we have full safecopy support, these fields have become useless for that purpose: the owner of the grant is *always* the caller. Allowing the caller to supply another endpoint is in fact dangerous, because the callee may then end up using a grant from a third party. One could call this a variant of the confused deputy problem. From now on, safecopy calls should always use the caller's endpoint as grant owner. This fully obsoletes the DL_ENDPT field in the inet/ethernet protocol. IO_ENDPT has other uses besides identifying the grant owner though. This patch renames IO_ENDPT to USER_ENDPT, not only because that is a more fitting name (it should never be used for I/O after all), but also in order to intentionally break any old system source code outside the base system. If this patch breaks your code, fixing it is fairly simple: - DL_ENDPT should be replaced with m_source; - IO_ENDPT should be replaced with m_source when used for safecopies; - IO_ENDPT should be replaced with USER_ENDPT for any other use, e.g. when setting REP_ENDPT, matching requests in CANCEL calls, getting DEV_SELECT flags, and retrieving of the real user process's endpoint in DEV_OPEN. The changes in this patch are binary backward compatible.
235 lines
8.2 KiB
C
235 lines
8.2 KiB
C
#ifndef INCL_DEC21041_H_GUARD
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#define INCL_DEC21041_H_GUARD
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/*
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de.h
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Header for the driver of the DEC 21140A ethernet card as emulated
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by VirtualPC 2007
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Created: 09/01/2009 Nicolas Tittley (first.last @ gmail DOT com)
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*/
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#include <sys/null.h>
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#define DE_FKEY 8 /* Shitf+ this value will dump info on console */
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#define NOT(x) (~(x))
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#if debug == 1
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# define DEBUG(statm) statm
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#else
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# define DEBUG(statm)
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#endif
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#define SA_ADDR_LEN sizeof(ether_addr_t)
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#define DE_NB_SEND_DESCR 32
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#define DE_SEND_BUF_SIZE (ETH_MAX_PACK_SIZE+2)
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#define DE_NB_RECV_DESCR 32
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#define DE_RECV_BUF_SIZE (ETH_MAX_PACK_SIZE+2)
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#define IOVEC_NR 16
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#define DE_MIN_BASE_ADDR 0x0400
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#define DE_SROM_EA_OFFSET 20
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#define DE_SETUP_FRAME_SIZE 192
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#define DEC21140A_VID 0x1011
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#define DEC21140A_DID 0x0009
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typedef struct iovec_dat_s {
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iovec_s_t iod_iovec[IOVEC_NR];
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int iod_iovec_s;
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endpoint_t iod_proc_nr;
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cp_grant_id_t iod_grant;
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vir_bytes iod_iovec_offset;
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} iovec_dat_s_t;
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typedef struct de_descr {
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u32_t des[4];
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} de_descr_t;
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typedef struct de_local_descr {
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de_descr_t *descr;
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u8_t *buf1;
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u8_t *buf2;
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} de_loc_descr_t;
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typedef struct dpeth {
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message rx_return_msg; /* Holds VREAD message until int */
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message tx_return_msg; /* Holds VWRITE message until int */
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char de_name[32]; /* Name of this interface */
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port_t de_base_port; /* Base port, for multiple card instance */
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int de_irq; /* IRQ line number */
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int de_hook; /* interrupt hook at kernel */
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int de_type; /* What kind of hardware */
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ether_addr_t de_address; /* Ethernet Address */
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eth_stat_t de_stat; /* Stats */
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unsigned long bytes_tx; /* Number of bytes sent */
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unsigned long bytes_rx; /* Number of bytes recv */
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/* Space reservation. We will allocate all structures later in the code.
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here we just make sure we have the space we need at compile time */
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u8_t sendrecv_descr_buf[(DE_NB_SEND_DESCR+DE_NB_RECV_DESCR)*
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sizeof(de_descr_t)];
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u8_t sendrecv_buf[DE_NB_SEND_DESCR*DE_SEND_BUF_SIZE +
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DE_NB_RECV_DESCR*DE_RECV_BUF_SIZE];
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phys_bytes sendrecv_descr_phys_addr[2];
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de_loc_descr_t descr[2][MAX(DE_NB_RECV_DESCR, DE_NB_SEND_DESCR)];
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int cur_descr[2];
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#define DESCR_RECV 0
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#define DESCR_TRAN 1
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int de_flags; /* Send/Receive mode (Configuration) */
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#define DEF_EMPTY 0x0000
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#define DEF_READING 0x0001
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#define DEF_RECV_BUSY 0x0002
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#define DEF_ACK_RECV 0x0004
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#define DEF_SENDING 0x0010
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#define DEF_XMIT_BUSY 0x0020
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#define DEF_ACK_SEND 0x0040
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#define DEF_PROMISC 0x0100
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#define DEF_MULTI 0x0200
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#define DEF_BROAD 0x0400
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#define DEF_ENABLED 0x2000
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#define DEF_STOPPED 0x4000
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int de_mode; /* Status of the Interface */
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#define DEM_DISABLED 0x0000
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#define DEM_SINK 0x0001
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#define DEM_ENABLED 0x0002
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/* Serial ROM */
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#define SROM_BITWIDTH 6
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u8_t srom[((1<<SROM_BITWIDTH)-1)*2]; /* Space to read in
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all the configuration ROM */
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/* Temporary storage for RECV/SEND requests */
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iovec_dat_s_t de_read_iovec;
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iovec_dat_s_t de_write_iovec;
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vir_bytes de_read_s;
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vir_bytes de_send_s;
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endpoint_t de_client;
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} dpeth_t;
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/************/
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/* Revisons */
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/************/
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#define DEC_21140A 0x20
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#define DE_TYPE_UNKNOWN 0x0
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/* #define CSR_ADDR(x, i) csraddr2(x->de_base_port + i) */
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#define CSR_ADDR(x, i) (x->de_base_port + i)
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/* CSRs */
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#define CSR0 0x00
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#define CSR0_SWR 0x00000001 /* sw reset */
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#define CSR0_BAR 0x00000002 /* bus arbitration */
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#define CSR0_CAL_8 0x00004000 /* cache align 8 long word */
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#define CSR0_TAP 0x00080000 /* trans auto polling */
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#define CSR1 0x08 /* transmit poll demand */
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#define CSR2 0x10 /* receive poll demand */
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#define CSR3 0x18 /* receive list address */
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#define CSR4 0x20 /* transmit list address */
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#define CSR5 0x28 /* status register */
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#define CSR5_EB 0x03800000 /* error bits */
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#define CSR5_TS 0x00700000 /* Transmit proc state */
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#define CSR5_RS 0x000E0000 /* Receive proc state */
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#define CSR5_NIS 0x00010000 /* Norm Int summ */
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#define CSR5_AIS 0x00008000 /* Abnorm Int sum */
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#define CSR5_FBE 0x00002000 /* Fatal bit error */
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#define CSR5_GTE 0x00000800 /* Gen-purp timer exp */
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#define CSR5_ETI 0x00000400 /* Early Trans int */
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#define CSR5_RWT 0x00000200 /* Recv watchdog timeout */
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#define CSR5_RPS 0x00000100 /* Recv proc stop */
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#define CSR5_RU 0x00000080 /* Recv buf unavail */
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#define CSR5_RI 0x00000040 /* Recv interrupt */
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#define CSR5_UNF 0x00000020 /* Trans underflow */
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#define CSR5_TJT 0x00000008 /* Trans Jabber Timeout */
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#define CSR5_TU 0x00000004 /* Trans buf unavail */
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#define CSR5_TPS 0x00000002 /* Trans proc stopped */
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#define CSR5_TI 0x00000001 /* Trans interrupt */
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#define CSR6 0x30 /* Operation mode */
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#define CSR6_SC 0x80000000 /* Special capt effect ena 31 */
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#define CSR6_RA 0x40000000 /* receive all 30 */
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#define CSR6_MBO 0x02000000 /* must be one 25 */
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#define CSR6_SCR 0x01000000 /* Scrambler mode 24 */
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#define CSR6_PCS 0x00800000 /* PCS function 23 */
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#define CSR6_TTM 0x00400000 /* Trans threshold mode 22 */
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#define CSR6_SF 0x00200000 /* store and forward 21 */
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#define CSR6_HBD 0x00080000 /* Heartbeat disable 19 */
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#define CSR6_PS 0x00040000 /* port select 18 */
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#define CSR6_CA 0x00020000 /* Capt effect ena 17 */
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#define CSR6_TR_00 0x00000000 /* Trans thresh 15:14 */
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#define CSR6_TR_01 0x00004000 /* Trans thresh 15:14 */
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#define CSR6_TR_10 0x00008000 /* Trans thresh 15:14 */
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#define CSR6_TR_11 0x0000C000 /* Trans thresh 15:14 */
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#define CSR6_ST 0x00002000 /* start/stop trans 13 */
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#define CSR6_FD 0x00000200 /* Full Duplex 9 */
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#define CSR6_PM 0x00000080 /* Pass all multicast 7 */
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#define CSR6_PR 0x00000040 /* Promisc mode 6 */
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#define CSR6_IF 0x00000010 /* Inv filtering 4 */
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#define CSR6_HO 0x00000004 /* Hash-only filtering 2 */
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#define CSR6_SR 0x00000002 /* start/stop recv 1 */
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#define CSR6_HP 0x00000001 /* Hash/perfect recv filt mode 0 */
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#define CSR7 0x38 /* Interrupt enable */
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#define CSR7_NI 0x00010000 /* Normal interrupt ena */
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#define CSR7_AI 0x00008000 /* Abnormal int ena */
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#define CSR7_TI 0x00000001 /* trans int ena */
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#define CSR7_TU 0x00000004 /* trans buf unavail ena */
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#define CSR7_RI 0x00000040 /* recv interp ena */
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#define CSR7_GPT 0x00000800 /* gen purpose timer ena */
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#define CSR9 0x48 /* Boot Rom, serial ROM, MII */
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#define CSR9_SR 0x0800 /* serial ROM select */
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#define CSR9_RD 0x4000 /* read */
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#define CSR9_DO 0x0008 /* data out */
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#define CSR9_DI 0x0004 /* data in */
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#define CSR9_SRC 0x0002 /* serial clock */
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#define CSR9_CS 0x0001 /* serial rom chip select */
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/* Send/Recv Descriptors */
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#define DES0 0
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#define DES0_OWN 0x80000000 /* descr ownership. 1=211140A */
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#define DES0_FL 0x3FFF0000 /* frame length */
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#define DES0_FL_SHIFT 16 /* shift to fix frame length */
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#define DES0_ES 0x00008000 /* Error sum */
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#define DES0_TO 0x00004000 /* Trans jabber timeout */
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#define DES0_LO 0x00000800 /* Loss of carrier */
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#define DES0_NC 0x00000400 /* no carrier */
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#define DES0_LC 0x00000200 /* Late coll */
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#define DES0_EC 0x00000100 /* Excessive coll */
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#define DES0_UF 0x00000002 /* Underflow error */
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#define DES0_RE 0x00000008 /* MII error */
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#define DES0_FS 0x00000200 /* first descr */
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#define DES0_LS 0x00000100 /* last descr */
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#define DES1 1
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#define DES1_ER 0x02000000 /* end of ring */
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#define DES1_SAC 0x01000000 /* 2nd address chained */
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#define DES1_BS2 0x003FF800 /* 2nd buffer size */
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#define DES1_BS2_SHFT 11 /* shift to obtain 2nd buffer size */
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#define DES1_BS1 0x000007FF /* 1nd buffer size */
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#define DES1_IC 0x80000000 /* Interrupt on completion 31 */
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#define DES1_LS 0x40000000 /* Last Segment 30 */
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#define DES1_FS 0x20000000 /* First Segment 29 */
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#define DES1_FT1 0x10000000 /* Filtering type 28 */
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#define DES1_SET 0x08000000 /* Setup frame 27 */
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#define DES1_AC 0x04000000 /* Add CRC disable 26 */
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#define DES1_DPD 0x00800000 /* Disabled padding 23 */
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#define DES1_FT0 0x00400000 /* Filtering type 22 */
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#define DES2 2 /* 1st buffer addr */
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#define DES3 3 /* 2nd buffer addr */
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#define DES_BUF1 DES2
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#define DES_BUF2 DES3
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#endif /* Include Guard */
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