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[src/trunk]: src/sys/arch/sparc64/sparc64 All of the OFW-enumerated busses no...
details: https://anonhg.NetBSD.org/src/rev/41159c93d0ac
branches: trunk
changeset: 983233:41159c93d0ac
user: thorpej <thorpej%NetBSD.org@localhost>
date: Tue May 11 03:43:30 2021 +0000
description:
All of the OFW-enumerated busses now associate the OFW node with the
device at config_found() time, so we can remove all of the stuff from
device_register() that does it, leaving only the @pci case to fix that
up (similar situation with ACPI on ARM and x86).
Adapt the boot device matching code to use the devhandle from the
device_t rather than the previous mechanism, and add some comments
explaining what's going on and some assertions to validate the
comments.
Collapse the sun4v vdsk boot device detection into the normal "sd"
case because it's almost identical to the normal "sd" case anyhow.
diffstat:
sys/arch/sparc64/sparc64/autoconf.c | 202 +++++++++++++----------------------
1 files changed, 78 insertions(+), 124 deletions(-)
diffs (truncated from 321 to 300 lines):
diff -r 58059b8c7121 -r 41159c93d0ac sys/arch/sparc64/sparc64/autoconf.c
--- a/sys/arch/sparc64/sparc64/autoconf.c Tue May 11 01:47:20 2021 +0000
+++ b/sys/arch/sparc64/sparc64/autoconf.c Tue May 11 03:43:30 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: autoconf.c,v 1.229 2021/05/10 23:53:44 thorpej Exp $ */
+/* $NetBSD: autoconf.c,v 1.230 2021/05/11 03:43:30 thorpej Exp $ */
/*
* Copyright (c) 1996
@@ -48,7 +48,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.229 2021/05/10 23:53:44 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.230 2021/05/11 03:43:30 thorpej Exp $");
#include "opt_ddb.h"
#include "opt_kgdb.h"
@@ -144,7 +144,6 @@
#endif
#define OFPATHLEN 128
-#define OFNODEKEY "OFpnode"
char machine_banner[100];
char machine_model[100];
@@ -997,62 +996,25 @@
}
/*
- * Get the firmware package handle from a device_t.
- * Assuming we have previously stored it in the device properties
- * dictionary.
- */
-static int
-device_ofnode(device_t dev)
-{
- prop_dictionary_t props;
- prop_object_t obj;
-
- if (dev == NULL)
- return 0;
- props = device_properties(dev);
- if (props == NULL)
- return 0;
- obj = prop_dictionary_get(props, OFNODEKEY);
- if (obj == NULL)
- return 0;
-
- return prop_number_signed_value(obj);
-}
-
-/*
- * Save the firmware package handle inside the properties dictionary
- * of a device_t.
- */
-static void
-device_setofnode(device_t dev, int node)
-{
- prop_dictionary_t props;
- prop_object_t obj;
-
- if (dev == NULL)
- return;
- props = device_properties(dev);
- if (props == NULL)
- return;
- obj = prop_number_create_signed(node);
- if (obj == NULL)
- return;
- prop_dictionary_set(props, OFNODEKEY, obj);
- prop_object_release(obj);
- DPRINTF(ACDB_BOOTDEV, (" [device %s has node %x] ",
- device_xname(dev), node));
-}
-
-/*
* Called back during autoconfiguration for each device found
*/
void
device_register(device_t dev, void *aux)
{
device_t busdev = device_parent(dev);
+ devhandle_t devhandle;
int ofnode = 0;
/*
+ * If the device has a valid OpenFirmware node association,
+ * grab it now.
+ */
+ devhandle = device_handle(dev);
+ if (devhandle_type(devhandle) == DEVHANDLE_TYPE_OF) {
+ ofnode = devhandle_to_of(devhandle);
+ }
+
+ /*
* We don't know the type of 'aux' - it depends on the
* bus this device attaches to. We are only interested in
* certain bus types, this only is used to find the boot
@@ -1063,23 +1025,18 @@
* Ignore mainbus0 itself, it certainly is not a boot
* device.
*/
- } else if (device_is_a(busdev, "mainbus")) {
- struct mainbus_attach_args *ma = aux;
-
- ofnode = ma->ma_node;
} else if (device_is_a(busdev, "pci")) {
struct pci_attach_args *pa = aux;
- ofnode = PCITAG_NODE(pa->pa_tag);
- } else if (device_is_a(busdev, "sbus") || device_is_a(busdev, "dma")
- || device_is_a(busdev, "ledma")) {
- struct sbus_attach_args *sa = aux;
-
- ofnode = sa->sa_node;
- } else if (device_is_a(busdev, "ebus")) {
- struct ebus_attach_args *ea = aux;
-
- ofnode = ea->ea_node;
+ /*
+ * XXX PCI devices don't currently get their devhandles
+ * set when the PCI layer attaches them, so we need to
+ * do it here. (It's not just us; ACPI has the same
+ * problem...)
+ */
+ ofnode = (int)PCITAG_NODE(pa->pa_tag);
+ devhandle = devhandle_from_of(ofnode);
+ device_set_handle(dev, devhandle);
} else if (device_is_a(busdev, "iic")) {
struct i2c_attach_args *ia = aux;
@@ -1098,6 +1055,7 @@
add_gpio_props_e250(dev, aux);
}
}
+ return;
} else if (device_is_a(dev, "sd") || device_is_a(dev, "cd")) {
struct scsipibus_attach_args *sa = aux;
struct scsipi_periph *periph = sa->sa_periph;
@@ -1121,9 +1079,37 @@
if (periph->periph_channel->chan_channel == 1)
off = 2;
}
- ofnode = device_ofnode(device_parent(busdev));
- dev_bi_unit_drive_match(dev, ofnode, periph->periph_target + off,
- 0, periph->periph_lun);
+
+ /*
+ * busdev now points to the direct descendent of the
+ * controller ("atabus" or "scsibus"). Get the
+ * controller's devhandle. Hoist it up one more so
+ * that busdev points at the the controller.
+ */
+ busdev = device_parent(busdev);
+ devhandle = device_handle(busdev);
+ KASSERT(devhandle_type(devhandle) == DEVHANDLE_TYPE_OF);
+ ofnode = devhandle_to_of(devhandle);
+
+ /*
+ * Special sun4v handling in case the kernel is running in a
+ * secondary logical domain
+ *
+ * The bootpath looks something like this:
+ * /virtual-devices@100/channel-devices@200/disk@1:a
+ *
+ * The device hierarchy constructed during autoconfiguration
+ * is:
+ * /mainbus/vbus/cbus/vdsk/scsibus/sd
+ */
+ if (CPU_ISSUN4V && device_is_a(dev, "sd") &&
+ device_is_a(busdev, "vdsk")) {
+ dev_path_exact_match(dev, ofnode);
+ } else {
+ dev_bi_unit_drive_match(dev, ofnode,
+ periph->periph_target + off, 0, periph->periph_lun);
+ }
+
if (device_is_a(busdev, "scsibus")) {
/* see if we're in a known SCA drivebay */
add_drivebay_props(dev, ofnode, aux);
@@ -1132,17 +1118,23 @@
} else if (device_is_a(dev, "wd")) {
struct ata_device *adev = aux;
- ofnode = device_ofnode(device_parent(busdev));
+ /*
+ * busdev points to the direct descendent of the controller,
+ * e.g. "atabus". Get the controller's devhandle.
+ */
+ devhandle = device_handle(device_parent(busdev));
+ KASSERT(devhandle_type(devhandle) == DEVHANDLE_TYPE_OF);
+ ofnode = devhandle_to_of(devhandle);
+
dev_bi_unit_drive_match(dev, ofnode, adev->adev_channel*2+
adev->adev_drv_data->drive, 0, 0);
return;
} else if (device_is_a(dev, "ld")) {
- ofnode = device_ofnode(busdev);
- } else if (device_is_a(dev, "vdsk")) {
- struct cbus_attach_args *ca = aux;
- ofnode = ca->ca_node;
- /* Ensure that the devices ofnode is stored for later use */
- device_setofnode(dev, ofnode);
+ /*
+ * Get the devhandle of the RAID (or whatever) controller.
+ */
+ devhandle = device_handle(busdev);
+ ofnode = devhandle_to_of(devhandle);
}
if (busdev == NULL)
@@ -1160,7 +1152,6 @@
prop_number_t pwwnd = NULL, nwwnd = NULL;
prop_number_t idd = NULL;
- device_setofnode(dev, ofnode);
dev_path_exact_match(dev, ofnode);
if (OF_getprop(ofnode, "name", tmpstr, sizeof(tmpstr)) <= 0)
@@ -1249,7 +1240,10 @@
* Check for I2C busses and add data for their direct configuration.
*/
if (device_is_a(dev, "iic")) {
- int busnode = device_ofnode(busdev);
+ devhandle_t bushandle = device_handle(busdev);
+ int busnode =
+ devhandle_type(bushandle) == DEVHANDLE_TYPE_OF ?
+ devhandle_to_of(bushandle) : 0;
if (busnode) {
prop_dictionary_t props = device_properties(busdev);
@@ -1293,11 +1287,11 @@
if (device_is_a(busdev, "pcfiic") &&
(!strcmp(machine_model, "SUNW,Ultra-4")))
add_i2c_props_e450(busdev, busnode);
+
/* E250 SUNW,envctrltwo */
if (device_is_a(busdev, "pcfiic") &&
(!strcmp(machine_model, "SUNW,Ultra-250")))
add_i2c_props_e250(busdev, busnode);
-
}
/* set properties for PCI framebuffers */
@@ -1378,7 +1372,6 @@
struct scsipibus_attach_args *sa = aux;
struct scsipi_periph *periph = sa->sa_periph;
uint64_t wwn = 0;
- int ofnode;
/*
* If this is a FC-AL drive it will have
@@ -1394,60 +1387,21 @@
* E.g.: /pci/SUNW,qlc@4/fp@0,0/disk
* and we need the parent of "disk" here.
*/
- ofnode = device_ofnode(
+ devhandle_t ctlr_devhandle = device_handle(
device_parent(device_parent(dev)));
+ KASSERT(devhandle_type(ctlr_devhandle) ==
+ DEVHANDLE_TYPE_OF);
+ int ofnode = devhandle_to_of(ctlr_devhandle);
+
for (ofnode = OF_child(ofnode);
- ofnode != 0 && booted_device == NULL;
- ofnode = OF_peer(ofnode)) {
+ ofnode != 0 && booted_device == NULL;
+ ofnode = OF_peer(ofnode)) {
dev_bi_unit_drive_match(dev, ofnode,
periph->periph_target,
wwn, periph->periph_lun);
}
}
}
-
- if (CPU_ISSUN4V) {
-
- /*
- * Special sun4v handling in case the kernel is running in a
- * secondary logical domain
- *
- * The bootpath looks something like this:
- * /virtual-devices@100/channel-devices@200/disk@1:a
- *
- * The device hierarchy constructed during autoconfiguration is:
- * mainbus/vbus/vdsk/scsibus/sd
- *
- * The logic to figure out the boot device is to look at the
- * grandparent to the 'sd' device and if this is a 'vdsk' device
- * and the ofnode matches the bootpaths ofnode then we have located
- * the boot device.
- */
-
- int ofnode;
-
- /* Cache the vdsk ofnode for later use later/below with sd device */
- if (device_is_a(dev, "vdsk")) {
- ofnode = device_ofnode(dev);
- device_setofnode(dev, ofnode);
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