16c4c5af26
- No more distinction between i/o-mapped and memory-mapped devices. It's all "bus space" now, and space tags differentiate the space with finer grain than the bus chipset tag. - Add memory barrier methods. - Implement space alloc/free methods. - Implement region read/write methods (like memcpy to/from bus space). This interface provides a better abstraction for dealing with machine-independent chipset drivers.
106 lines
2.9 KiB
C
106 lines
2.9 KiB
C
/* $NetBSD: cyvar.h,v 1.2 1996/10/21 22:34:19 thorpej Exp $ */
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/*
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* cy_var.h
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*
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* Driver for Cyclades Cyclom-8/16/32 multiport serial cards
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* (currently not tested with Cyclom-32 cards)
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*
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* Timo Rossi, 1996
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*
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* Supports both ISA and PCI Cyclom cards
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*/
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/* #define CY_DEBUG */
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#define CY_DEBUG1
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/*
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* Maximum number of ports per card
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*/
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#define CY_MAX_PORTS (CD1400_NO_OF_CHANNELS * CY_MAX_CD1400s)
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#define CY_RX_FIFO_THRESHOLD 6
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/*
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* Automatic RTS (or actually DTR, the RTS and DTR lines need to be
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* exchanged) handshake threshold used if CY_HW_RTS is defined
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*/
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#define CY_RX_DTR_THRESHOLD 9
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/*
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* Port number on card encoded in low 5 bits
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* card number in next 2 bits (only space for 4 cards)
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* high bit reserved for dialout flag
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*/
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#define CY_PORT(x) (minor(x) & 0xf)
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#define CY_CARD(x) ((minor(x) >> 5) & 3)
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#define CY_DIALOUT(x) ((minor(x) & 0x80) != 0)
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#define CY_DIALIN(x) (!CY_DIALOUT(x))
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/*
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* read/write cd1400 registers (when sc_softc-structure is available)
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*/
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#define cd_read_reg(sc,chip,reg) bus_space_read_1(sc->sc_memt, \
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sc->sc_bsh, sc->sc_cd1400_offs[chip] + \
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(((reg << 1)) << sc->sc_bustype))
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#define cd_write_reg(sc,chip,reg,val) bus_space_write_1(sc->sc_memt, \
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sc->sc_bsh, sc->sc_cd1400_offs[chip] + \
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(((reg << 1))<< sc->sc_bustype), (val))
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/*
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* ibuf is a simple ring buffer. It is always used two
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* bytes at a time (status and data)
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*/
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#define CY_IBUF_SIZE (2*512)
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/* software state for one port */
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struct cy_port {
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int cy_port_num;
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int cy_chip;
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struct tty *cy_tty;
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int cy_openflags;
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int cy_fifo_overruns;
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int cy_ibuf_overruns;
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u_char cy_channel_control; /* last CCR channel control
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* command bits */
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u_char cy_carrier_stat; /* copied from MSVR2 */
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u_char cy_flags;
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u_char *cy_ibuf, *cy_ibuf_end;
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u_char *cy_ibuf_rd_ptr, *cy_ibuf_wr_ptr;
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#ifdef CY_DEBUG1
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int cy_rx_int_count;
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int cy_tx_int_count;
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int cy_modem_int_count;
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int cy_start_count;
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#endif /* CY_DEBUG1 */
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};
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#define CY_F_CARRIER_CHANGED 0x01
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#define CY_F_START_BREAK 0x02
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#define CY_F_END_BREAK 0x04
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#define CY_F_STOP 0x08
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#define CY_F_SEND_NUL 0x10
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#define CY_F_START 0x20
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/* software state for one card */
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struct cy_softc {
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struct device sc_dev;
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void *sc_ih;
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bus_space_tag_t sc_memt;
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bus_space_tag_t sc_iot; /* only used by PCI card */
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bus_space_handle_t sc_bsh;
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int sc_bustype;
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int sc_nchips; /* Number of cd1400's on this card */
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int sc_cd1400_offs[CY_MAX_CD1400s];
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struct cy_port sc_ports[CY_MAX_PORTS];
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#ifdef CY_DEBUG1
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int sc_poll_count1;
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int sc_poll_count2;
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#endif
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};
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int cy_find __P((struct cy_softc *));
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void cy_attach __P((struct device *, struct device *, void *));
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int cy_intr __P((void *));
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