diff options
author | Marcel Moolenaar <marcel@FreeBSD.org> | 2015-07-19 23:37:45 +0000 |
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committer | Marcel Moolenaar <marcel@FreeBSD.org> | 2015-07-19 23:37:45 +0000 |
commit | be00e098188c0dec135fb449334593731abc0033 (patch) | |
tree | e753a32b4e0c39d0491cf9ea039c96301f3361f6 /sys/dev/proto | |
parent | 97cc6870f68b3bc545dfb78512cc0e771a93fd70 (diff) | |
download | src-be00e098188c0dec135fb449334593731abc0033.tar.gz src-be00e098188c0dec135fb449334593731abc0033.zip |
Check the hw.proto.attach environment variable for devices that
proto(4) should attach to instead of the normal driver.
Document the variable.
Notes
Notes:
svn path=/head/; revision=285707
Diffstat (limited to 'sys/dev/proto')
-rw-r--r-- | sys/dev/proto/proto.h | 3 | ||||
-rw-r--r-- | sys/dev/proto/proto_bus_isa.c | 7 | ||||
-rw-r--r-- | sys/dev/proto/proto_bus_pci.c | 9 | ||||
-rw-r--r-- | sys/dev/proto/proto_core.c | 58 |
4 files changed, 70 insertions, 7 deletions
diff --git a/sys/dev/proto/proto.h b/sys/dev/proto/proto.h index 690d71fff85a..cf89512f6ea7 100644 --- a/sys/dev/proto/proto.h +++ b/sys/dev/proto/proto.h @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2014 Marcel Moolenaar + * Copyright (c) 2014, 2015 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -61,6 +61,7 @@ extern char proto_driver_name[]; int proto_add_resource(struct proto_softc *, int, int, struct resource *); +int proto_probe(device_t dev, const char *prefix, char ***devnamesp); int proto_attach(device_t dev); int proto_detach(device_t dev); diff --git a/sys/dev/proto/proto_bus_isa.c b/sys/dev/proto/proto_bus_isa.c index 0bbd469c8636..e7438bf1b4d5 100644 --- a/sys/dev/proto/proto_bus_isa.c +++ b/sys/dev/proto/proto_bus_isa.c @@ -59,6 +59,9 @@ static driver_t proto_isa_driver = { sizeof(struct proto_softc), }; +static char proto_isa_prefix[] = "isa"; +static char **proto_isa_devnames; + static int proto_isa_probe(device_t dev) { @@ -77,12 +80,12 @@ proto_isa_probe(device_t dev) return (ENODEV); sb = sbuf_new_auto(); - sbuf_printf(sb, "isa:%#lx", rman_get_start(res)); + sbuf_printf(sb, "%s:%#lx", proto_isa_prefix, rman_get_start(res)); sbuf_finish(sb); device_set_desc_copy(dev, sbuf_data(sb)); sbuf_delete(sb); bus_release_resource(dev, type, rid, res); - return (BUS_PROBE_HOOVER); + return (proto_probe(dev, proto_isa_prefix, &proto_isa_devnames)); } static int diff --git a/sys/dev/proto/proto_bus_pci.c b/sys/dev/proto/proto_bus_pci.c index 2d47fe6923b7..38155ce7c624 100644 --- a/sys/dev/proto/proto_bus_pci.c +++ b/sys/dev/proto/proto_bus_pci.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2014 Marcel Moolenaar + * Copyright (c) 2014, 2015 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -59,6 +59,9 @@ static driver_t proto_pci_driver = { sizeof(struct proto_softc), }; +static char proto_pci_prefix[] = "pci"; +static char **proto_pci_devnames; + static int proto_pci_probe(device_t dev) { @@ -68,12 +71,12 @@ proto_pci_probe(device_t dev) return (ENXIO); sb = sbuf_new_auto(); - sbuf_printf(sb, "pci%d:%d:%d:%d", pci_get_domain(dev), + sbuf_printf(sb, "%s%d:%d:%d:%d", proto_pci_prefix, pci_get_domain(dev), pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev)); sbuf_finish(sb); device_set_desc_copy(dev, sbuf_data(sb)); sbuf_delete(sb); - return (BUS_PROBE_HOOVER); + return (proto_probe(dev, proto_pci_prefix, &proto_pci_devnames)); } static int diff --git a/sys/dev/proto/proto_core.c b/sys/dev/proto/proto_core.c index 420df2bd9612..817f58e5aff2 100644 --- a/sys/dev/proto/proto_core.c +++ b/sys/dev/proto/proto_core.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2014 Marcel Moolenaar + * Copyright (c) 2014, 2015 Marcel Moolenaar * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -120,6 +120,62 @@ proto_intr(void *arg) #endif int +proto_probe(device_t dev, const char *prefix, char ***devnamesp) +{ + char **devnames = *devnamesp; + const char *dn, *ep, *ev; + size_t pfxlen; + int idx, names; + + if (devnames == NULL) { + pfxlen = strlen(prefix); + names = 1; /* NULL pointer */ + ev = kern_getenv("hw.proto.attach"); + if (ev != NULL) { + dn = ev; + while (*dn != '\0') { + ep = dn; + while (*ep != ',' && *ep != '\0') + ep++; + if ((ep - dn) > pfxlen && + strncmp(dn, prefix, pfxlen) == 0) + names++; + dn = (*ep == ',') ? ep + 1 : ep; + } + } + devnames = malloc(names * sizeof(caddr_t), M_DEVBUF, + M_WAITOK | M_ZERO); + *devnamesp = devnames; + if (ev != NULL) { + dn = ev; + idx = 0; + while (*dn != '\0') { + ep = dn; + while (*ep != ',' && *ep != '\0') + ep++; + if ((ep - dn) > pfxlen && + strncmp(dn, prefix, pfxlen) == 0) { + devnames[idx] = malloc(ep - dn + 1, + M_DEVBUF, M_WAITOK | M_ZERO); + memcpy(devnames[idx], dn, ep - dn); + idx++; + } + dn = (*ep == ',') ? ep + 1 : ep; + } + freeenv(__DECONST(char *, ev)); + } + } + + dn = device_get_desc(dev); + while (*devnames != NULL) { + if (strcmp(dn, *devnames) == 0) + return (BUS_PROBE_SPECIFIC); + devnames++; + } + return (BUS_PROBE_HOOVER); +} + +int proto_attach(device_t dev) { struct proto_softc *sc; |