Sync with sys/i386/isa/sio.c revision 1.194.
This commit is contained in:
kato
parent
6c81cb515e
commit
3bb8cccf98
@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)com.c 7.5 (Berkeley) 5/16/91
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* $Id: sio.c,v 1.45 1997/12/16 17:40:39 eivind Exp $
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* $Id: sio.c,v 1.46 1997/12/29 16:08:48 kato Exp $
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*/
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#include "opt_comconsole.h"
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@ -221,6 +221,10 @@
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#define COM_VERBOSE(dev) ((dev)->id_flags & 0x80)
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#define COM_NOTST3(dev) ((dev)->id_flags & 0x10000)
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#define COM_ST16650A(dev) ((dev)->id_flags & 0x20000)
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#define COM_C_NOPROBE (0x40000)
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#define COM_NOPROBE(dev) ((dev)->id_flags & COM_C_NOPROBE)
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#define COM_C_IIR_TXRDYBUG (0x80000)
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#define COM_IIR_TXRDYBUG(dev) ((dev)->id_flags & COM_C_IIR_TXRDYBUG)
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#define COM_FIFOSIZE(dev) (((dev)->id_flags & 0xff000000) >> 24)
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#ifndef PC98
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@ -291,6 +295,7 @@ struct lbq {
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/* com device structure */
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struct com_s {
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u_int id_flags; /* Copy isa device falgas */
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u_char state; /* miscellaneous flag bits */
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bool_t active_out; /* nonzero if the callout device is open */
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u_char cfcr_image; /* copy of value written to CFCR */
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@ -356,6 +361,7 @@ struct com_s {
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Port_t modem_ctl_port;
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Port_t line_status_port;
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Port_t modem_status_port;
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Port_t intr_ctl_port; /* Ports of IIR register */
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struct tty *tp; /* cross reference */
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@ -736,6 +742,10 @@ sioinit(struct pccard_devinfo *devi)
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/* Make sure it isn't already probed. */
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if (com_addr(devi->isahd.id_unit))
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return(EBUSY);
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/* It's already probed as serial by Upper */
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devi->isahd.id_flags |= COM_C_NOPROBE;
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/*
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* Probe the device. If a value is returned, the
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* device was found at the location.
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@ -1011,6 +1021,37 @@ sioprobe(dev)
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/* EXTRA DELAY? */
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outb(iobase + com_mcr, mcr_image);
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/*
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* It's a definitly Serial PCMCIA(16550A), but still be required
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* for IIR_TXRDY implementation ( Palido 321s, DC-1S... )
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*/
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if ( COM_NOPROBE(dev) ) {
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/* Reading IIR register twice */
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for ( fn = 0; fn < 2; fn ++ ) {
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DELAY(10000);
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failures[6] = inb(iobase + com_iir);
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}
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/* Check IIR_TXRDY clear ? */
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result = IO_COMSIZE;
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if ( failures[6] & IIR_TXRDY ) {
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/* Nop, Double check with clearing IER */
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outb(iobase + com_ier, 0);
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if ( inb(iobase + com_iir) & IIR_NOPEND ) {
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/* Ok. we're familia this gang */
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dev->id_flags |= COM_C_IIR_TXRDYBUG; /* Set IIR_TXRDYBUG */
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} else {
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/* Unknow, Just omit this chip.. XXX*/
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result = 0;
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}
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} else {
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/* OK. this is well-known guys */
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dev->id_flags &= ~COM_C_IIR_TXRDYBUG; /*Clear IIR_TXRDYBUG*/
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}
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outb(iobase + com_cfcr, CFCR_8BITS);
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enable_intr();
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return( result );
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}
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/*
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* Check that
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* o the CFCR, IER and MCR in UART hold the values written to them
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@ -1185,6 +1226,7 @@ sioattach(isdp)
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com->mcr_image = inb(com->modem_ctl_port);
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com->line_status_port = iobase + com_lsr;
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com->modem_status_port = iobase + com_msr;
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com->intr_ctl_port = iobase + com_ier;
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}
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#else /* not PC98 */
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com->data_port = iobase + com_data;
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@ -1193,6 +1235,7 @@ sioattach(isdp)
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com->mcr_image = inb(com->modem_ctl_port);
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com->line_status_port = iobase + com_lsr;
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com->modem_status_port = iobase + com_msr;
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com->intr_ctl_port = iobase + com_ier;
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#endif
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/*
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@ -1235,7 +1278,9 @@ sioattach(isdp)
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#ifndef PC98
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#ifdef COM_MULTIPORT
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if (!COM_ISMULTIPORT(isdp))
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if (!COM_ISMULTIPORT(isdp) && !COM_IIR_TXRDYBUG(isdp))
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#else
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if (!COM_IIR_TXRDYBUG(isdp))
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#endif
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{
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u_char scr;
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@ -1372,6 +1417,8 @@ determined_type: ;
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#endif
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if (unit == comconsole)
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printf(", console");
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if ( COM_IIR_TXRDYBUG(isdp) )
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printf(" with a bogus IIR_TXRDY register");
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printf("\n");
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s = spltty();
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@ -1400,6 +1447,7 @@ determined_type: ;
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unit | CALLOUT_MASK | CONTROL_LOCK_STATE, DV_CHR,
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UID_UUCP, GID_DIALER, 0660, "cuala%n", unit);
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#endif
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com->id_flags = isdp->id_flags; /* Heritate id_flags for later */
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return (1);
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}
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@ -1556,8 +1604,13 @@ open_top:
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(void) inb(com->data_port);
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com->prev_modem_status = com->last_modem_status
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= inb(com->modem_status_port);
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outb(iobase + com_ier, IER_ERXRDY | IER_ETXRDY | IER_ERLS
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| IER_EMSC);
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if (COM_IIR_TXRDYBUG(com)) {
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outb(com->intr_ctl_port, IER_ERXRDY | IER_ERLS
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| IER_EMSC);
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} else {
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outb(com->intr_ctl_port, IER_ERXRDY | IER_ETXRDY
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| IER_ERLS | IER_EMSC);
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}
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#ifdef PC98
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}
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#endif
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@ -1892,11 +1945,18 @@ siointr1(com)
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u_char modem_status;
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u_char *ioptr;
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u_char recv_data;
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u_char int_ident;
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u_char int_ctl;
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u_char int_ctl_new;
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#ifdef PC98
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u_char tmp=0;
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recv_data=0;
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#endif /* PC98 */
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int_ctl = inb(com->intr_ctl_port);
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int_ctl_new = int_ctl;
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while (TRUE) {
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#ifdef PC98
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status_read:;
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@ -2071,6 +2131,9 @@ cont:
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com_int_Tx_enable(com);
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#endif
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com->obufq.l_head = ioptr;
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if (COM_IIR_TXRDYBUG(com)) {
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int_ctl_new = int_ctl | IER_ETXRDY;
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}
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if (ioptr >= com->obufq.l_tail) {
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struct lbq *qp;
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@ -2083,6 +2146,9 @@ cont:
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com->obufq.l_next = qp;
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} else {
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/* output just completed */
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if ( COM_IIR_TXRDYBUG(com) ) {
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int_ctl_new = int_ctl & ~IER_ETXRDY;
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}
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com->state &= ~CS_BUSY;
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#if defined(PC98)
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if(IS_8251(com->pc98_if_type))
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@ -2096,6 +2162,9 @@ cont:
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setsofttty(); /* handle at high level ASAP */
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}
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}
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if ( COM_IIR_TXRDYBUG(com) && (int_ctl != int_ctl_new)) {
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outb(com->intr_ctl_port, int_ctl_new);
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}
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}
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#ifdef PC98
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else if (line_status & LSR_TXRDY) {
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)com.c 7.5 (Berkeley) 5/16/91
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* $Id: sio.c,v 1.45 1997/12/16 17:40:39 eivind Exp $
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* $Id: sio.c,v 1.46 1997/12/29 16:08:48 kato Exp $
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*/
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#include "opt_comconsole.h"
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@ -221,6 +221,10 @@
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#define COM_VERBOSE(dev) ((dev)->id_flags & 0x80)
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#define COM_NOTST3(dev) ((dev)->id_flags & 0x10000)
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#define COM_ST16650A(dev) ((dev)->id_flags & 0x20000)
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#define COM_C_NOPROBE (0x40000)
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#define COM_NOPROBE(dev) ((dev)->id_flags & COM_C_NOPROBE)
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#define COM_C_IIR_TXRDYBUG (0x80000)
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#define COM_IIR_TXRDYBUG(dev) ((dev)->id_flags & COM_C_IIR_TXRDYBUG)
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#define COM_FIFOSIZE(dev) (((dev)->id_flags & 0xff000000) >> 24)
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#ifndef PC98
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@ -291,6 +295,7 @@ struct lbq {
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/* com device structure */
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struct com_s {
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u_int id_flags; /* Copy isa device falgas */
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u_char state; /* miscellaneous flag bits */
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bool_t active_out; /* nonzero if the callout device is open */
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u_char cfcr_image; /* copy of value written to CFCR */
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@ -356,6 +361,7 @@ struct com_s {
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Port_t modem_ctl_port;
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Port_t line_status_port;
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Port_t modem_status_port;
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Port_t intr_ctl_port; /* Ports of IIR register */
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struct tty *tp; /* cross reference */
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@ -736,6 +742,10 @@ sioinit(struct pccard_devinfo *devi)
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/* Make sure it isn't already probed. */
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if (com_addr(devi->isahd.id_unit))
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return(EBUSY);
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/* It's already probed as serial by Upper */
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devi->isahd.id_flags |= COM_C_NOPROBE;
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/*
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* Probe the device. If a value is returned, the
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* device was found at the location.
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@ -1011,6 +1021,37 @@ sioprobe(dev)
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/* EXTRA DELAY? */
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outb(iobase + com_mcr, mcr_image);
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/*
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* It's a definitly Serial PCMCIA(16550A), but still be required
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* for IIR_TXRDY implementation ( Palido 321s, DC-1S... )
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*/
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if ( COM_NOPROBE(dev) ) {
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/* Reading IIR register twice */
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for ( fn = 0; fn < 2; fn ++ ) {
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DELAY(10000);
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failures[6] = inb(iobase + com_iir);
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}
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/* Check IIR_TXRDY clear ? */
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result = IO_COMSIZE;
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if ( failures[6] & IIR_TXRDY ) {
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/* Nop, Double check with clearing IER */
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outb(iobase + com_ier, 0);
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if ( inb(iobase + com_iir) & IIR_NOPEND ) {
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/* Ok. we're familia this gang */
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dev->id_flags |= COM_C_IIR_TXRDYBUG; /* Set IIR_TXRDYBUG */
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} else {
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/* Unknow, Just omit this chip.. XXX*/
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result = 0;
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}
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} else {
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/* OK. this is well-known guys */
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dev->id_flags &= ~COM_C_IIR_TXRDYBUG; /*Clear IIR_TXRDYBUG*/
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}
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outb(iobase + com_cfcr, CFCR_8BITS);
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enable_intr();
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return( result );
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}
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/*
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* Check that
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* o the CFCR, IER and MCR in UART hold the values written to them
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@ -1185,6 +1226,7 @@ sioattach(isdp)
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com->mcr_image = inb(com->modem_ctl_port);
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com->line_status_port = iobase + com_lsr;
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com->modem_status_port = iobase + com_msr;
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com->intr_ctl_port = iobase + com_ier;
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}
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#else /* not PC98 */
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com->data_port = iobase + com_data;
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@ -1193,6 +1235,7 @@ sioattach(isdp)
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com->mcr_image = inb(com->modem_ctl_port);
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com->line_status_port = iobase + com_lsr;
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com->modem_status_port = iobase + com_msr;
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com->intr_ctl_port = iobase + com_ier;
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#endif
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/*
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@ -1235,7 +1278,9 @@ sioattach(isdp)
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#ifndef PC98
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#ifdef COM_MULTIPORT
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if (!COM_ISMULTIPORT(isdp))
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if (!COM_ISMULTIPORT(isdp) && !COM_IIR_TXRDYBUG(isdp))
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#else
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if (!COM_IIR_TXRDYBUG(isdp))
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#endif
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{
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u_char scr;
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@ -1372,6 +1417,8 @@ determined_type: ;
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#endif
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if (unit == comconsole)
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printf(", console");
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if ( COM_IIR_TXRDYBUG(isdp) )
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printf(" with a bogus IIR_TXRDY register");
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printf("\n");
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s = spltty();
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@ -1400,6 +1447,7 @@ determined_type: ;
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unit | CALLOUT_MASK | CONTROL_LOCK_STATE, DV_CHR,
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UID_UUCP, GID_DIALER, 0660, "cuala%n", unit);
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#endif
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com->id_flags = isdp->id_flags; /* Heritate id_flags for later */
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return (1);
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}
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@ -1556,8 +1604,13 @@ open_top:
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(void) inb(com->data_port);
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com->prev_modem_status = com->last_modem_status
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= inb(com->modem_status_port);
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outb(iobase + com_ier, IER_ERXRDY | IER_ETXRDY | IER_ERLS
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| IER_EMSC);
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if (COM_IIR_TXRDYBUG(com)) {
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outb(com->intr_ctl_port, IER_ERXRDY | IER_ERLS
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| IER_EMSC);
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} else {
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outb(com->intr_ctl_port, IER_ERXRDY | IER_ETXRDY
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| IER_ERLS | IER_EMSC);
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}
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#ifdef PC98
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}
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#endif
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@ -1892,11 +1945,18 @@ siointr1(com)
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u_char modem_status;
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u_char *ioptr;
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u_char recv_data;
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u_char int_ident;
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u_char int_ctl;
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u_char int_ctl_new;
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#ifdef PC98
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u_char tmp=0;
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recv_data=0;
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#endif /* PC98 */
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int_ctl = inb(com->intr_ctl_port);
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int_ctl_new = int_ctl;
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while (TRUE) {
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#ifdef PC98
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status_read:;
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@ -2071,6 +2131,9 @@ cont:
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com_int_Tx_enable(com);
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#endif
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com->obufq.l_head = ioptr;
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if (COM_IIR_TXRDYBUG(com)) {
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int_ctl_new = int_ctl | IER_ETXRDY;
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}
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if (ioptr >= com->obufq.l_tail) {
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struct lbq *qp;
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@ -2083,6 +2146,9 @@ cont:
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com->obufq.l_next = qp;
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} else {
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/* output just completed */
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if ( COM_IIR_TXRDYBUG(com) ) {
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int_ctl_new = int_ctl & ~IER_ETXRDY;
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}
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com->state &= ~CS_BUSY;
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#if defined(PC98)
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if(IS_8251(com->pc98_if_type))
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@ -2096,6 +2162,9 @@ cont:
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setsofttty(); /* handle at high level ASAP */
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}
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}
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if ( COM_IIR_TXRDYBUG(com) && (int_ctl != int_ctl_new)) {
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outb(com->intr_ctl_port, int_ctl_new);
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}
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}
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#ifdef PC98
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else if (line_status & LSR_TXRDY) {
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