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Add support for polling com devices when no interrupt is available.

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This commit is contained in:
jmcneill 2018-11-30 16:26:59 +00:00
parent 462b2f438f
commit b1584913f6
5 changed files with 42 additions and 23 deletions
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9
sys/dev/pci/atppc_puc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: atppc_puc.c,v 1.14 2014/03/29 19:28:24 christos Exp $ */
/* $NetBSD: atppc_puc.c,v 1.15 2018/11/30 16:26:59 jmcneill Exp $ */
/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
@ -32,7 +32,7 @@
#include "opt_atppc.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: atppc_puc.c,v 1.14 2014/03/29 19:28:24 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: atppc_puc.c,v 1.15 2018/11/30 16:26:59 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -101,6 +101,11 @@ atppc_puc_attach(device_t parent, device_t self, void *aux)
sc->sc_dev_ok = ATPPC_NOATTACH;
if (aa->poll) {
aprint_error(": polling not supported\n");
return;
}
printf(": AT Parallel Port\n");
/* Attach */

35
sys/dev/pci/com_puc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: com_puc.c,v 1.24 2017/04/27 10:01:54 msaitoh Exp $ */
/* $NetBSD: com_puc.c,v 1.25 2018/11/30 16:26:59 jmcneill Exp $ */
/*
* Copyright (c) 1998 Christopher G. Demetriou. All rights reserved.
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: com_puc.c,v 1.24 2017/04/27 10:01:54 msaitoh Exp $");
__KERNEL_RCSID(0, "$NetBSD: com_puc.c,v 1.25 2018/11/30 16:26:59 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -91,7 +91,7 @@ com_puc_attach(device_t parent, device_t self, void *aux)
struct com_puc_softc *psc = device_private(self);
struct com_softc *sc = &psc->sc_com;
struct puc_attach_args *aa = aux;
const char *intrstr;
const char *intrstr = NULL;
char intrbuf[PCI_INTRSTR_LEN];
unsigned int iface;
@ -106,16 +106,20 @@ com_puc_attach(device_t parent, device_t self, void *aux)
COM_INIT_REGS(sc->sc_regs, aa->t, aa->h, aa->a);
sc->sc_frequency = aa->flags & PUC_COM_CLOCKMASK;
intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf,
sizeof(intrbuf));
psc->sc_ih = pci_intr_establish_xname(aa->pc, aa->intrhandle,
IPL_SERIAL, comintr, sc, device_xname(self));
if (psc->sc_ih == NULL) {
aprint_error("couldn't establish interrupt");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
if (!aa->poll) {
intrstr = pci_intr_string(aa->pc, aa->intrhandle, intrbuf,
sizeof(intrbuf));
psc->sc_ih = pci_intr_establish_xname(aa->pc, aa->intrhandle,
IPL_SERIAL, comintr, sc, device_xname(self));
if (psc->sc_ih == NULL) {
aprint_error("couldn't establish interrupt");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
}
} else {
sc->sc_hwflags |= COM_HW_POLL;
}
#if defined(amd64) || defined(i386)
@ -129,7 +133,10 @@ com_puc_attach(device_t parent, device_t self, void *aux)
if (aa->h < 0x10000)
aprint_normal("ioaddr 0x%04lx, ", aa->h);
#endif
aprint_normal("interrupting at %s\n", intrstr);
if (!aa->poll)
aprint_normal("interrupting at %s\n", intrstr);
else
aprint_normal("polling\n");
/* Enable Cyberserial 8X clock. */
if (aa->flags & (PUC_COM_SIIG10x|PUC_COM_SIIG20x)) {

9
sys/dev/pci/lpt_puc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: lpt_puc.c,v 1.18 2017/04/27 10:01:54 msaitoh Exp $ */
/* $NetBSD: lpt_puc.c,v 1.19 2018/11/30 16:26:59 jmcneill Exp $ */
/*
* Copyright (c) 1998 Christopher G. Demetriou. All rights reserved.
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lpt_puc.c,v 1.18 2017/04/27 10:01:54 msaitoh Exp $");
__KERNEL_RCSID(0, "$NetBSD: lpt_puc.c,v 1.19 2018/11/30 16:26:59 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -76,6 +76,11 @@ lpt_puc_attach(device_t parent, device_t self, void *aux)
sc->sc_iot = aa->t;
sc->sc_ioh = aa->h;
if (aa->poll) {
aprint_error(": polling not supported\n");
return;
}
aprint_naive(": Parallel port");
aprint_normal(": ");

9
sys/dev/pci/puc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: puc.c,v 1.39 2016/07/07 06:55:41 msaitoh Exp $ */
/* $NetBSD: puc.c,v 1.40 2018/11/30 16:26:59 jmcneill Exp $ */
/*
* Copyright (c) 1996, 1998, 1999
@ -53,7 +53,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: puc.c,v 1.39 2016/07/07 06:55:41 msaitoh Exp $");
__KERNEL_RCSID(0, "$NetBSD: puc.c,v 1.40 2018/11/30 16:26:59 jmcneill Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -148,6 +148,7 @@ puc_attach(device_t parent, device_t self, void *aux)
pcireg_t subsys;
int i, barindex;
int locs[PUCCF_NLOCS];
bool poll = false;
subsys = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
sc->sc_desc = puc_find_description(PCI_VENDOR(pa->pa_id),
@ -215,8 +216,7 @@ puc_attach(device_t parent, device_t self, void *aux)
/* Map interrupt. */
if (pci_intr_map(pa, &intrhandle)) {
aprint_error_dev(self, "couldn't map interrupt\n");
return;
poll = true;
}
/*
* XXX the sub-devices establish the interrupts, for the
@ -288,6 +288,7 @@ puc_attach(device_t parent, device_t self, void *aux)
paa.pc = pa->pa_pc;
paa.tag = pa->pa_tag;
paa.intrhandle = intrhandle;
paa.poll = poll;
paa.a = sc->sc_bar_mappings[barindex].a +
sc->sc_desc->ports[i].offset;
paa.t = sc->sc_bar_mappings[barindex].t;

3
sys/dev/pci/pucvar.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: pucvar.h,v 1.11 2014/03/18 18:20:42 riastradh Exp $ */
/* $NetBSD: pucvar.h,v 1.12 2018/11/30 16:26:59 jmcneill Exp $ */
/*
* Copyright (c) 1998, 1999 Christopher G. Demetriou. All rights reserved.
@ -95,6 +95,7 @@ struct puc_attach_args {
pci_chipset_tag_t pc;
pci_intr_handle_t intrhandle;
bool poll;
pcitag_t tag;
bus_addr_t a;