path: root/sys/sparc64/fhc/fhc.c
diff options
authorMarius Strobl <marius@FreeBSD.org>2007-03-07 21:13:51 +0000
committerMarius Strobl <marius@FreeBSD.org>2007-03-07 21:13:51 +0000
commit33368e9fe8bf82bb49c2e63f5ab2a15d96e68f88 (patch)
tree667b76e76345ed2206307e4f857ee9072cec2a6e /sys/sparc64/fhc/fhc.c
parentddb38a1f3d033f7114bdc627be867c4b51984f44 (diff)
Rototill the sparc64 nexus(4) (actually this brings in the code the
sun4v nexus(4) in turn is based on): o Change nexus(4) to manage the resources of its children so the respective device drivers don't need to figure them out of OFW themselves. o Change nexus(4) to provide the ofw_bus KOBJ interface instead of using IVARs for supplying the OFW node and the subset of standard properties of its children. Together with the previous change this also allows to fully take advantage of newbus in that drivers like fhc(4), which attach on multiple parent busses, no longer require different bus front-ends as obtaining the OFW node and properties as well as resource allocation works the same for all supported busses. As such this change also is part 4/4 of allowing creator(4) to work in USIII-based machines as it allows this driver to attach on both nexus(4) and upa(4). On the other hand removing these IVARs breaks API compatibility with the powerpc nexus(4) but which isn't that bad as a) sparc64 currently doesn't share any device driver hanging off of nexus(4) with powerpc and b) they were no longer compatible regarding OFW-related extensions at the pci(4) level since quite some time. o Provide bus_get_dma_tag methods in nexus(4) and its children in order to handle DMA tags in a hierarchical way and get rid of the sparc64_root_dma_tag kludge. Together with the previous two items this changes also allows to completely get rid of the nexus(4) IVAR interface. It also includes: - pushing the constraints previously specified by the nexus_dmatag down into the DMA tags of psycho(4) and sbus(4) as it's their IOMMUs which induce these restrictions (and nothing at the nexus(4) or anything that would warrant specifying them there), - fixing some obviously wrong constraints of the psycho(4) and sbus(4) DMA tags, which happened to not actually be used with the sparc64_root_dma_tag kludge in place and therefore didn't cause problems so far, - replacing magic constants for constraints with macros as far as it is obvious as to where they come from. This doesn't include taking advantage of the newbus way to get the parent DMA tags implemented by this change in order to divorce the IOTSBs of the PCI and SBus IOMMUs or for implementing the workaround for the DMA sync bug in Sabre (and Tomatillo) bridges, yet, though. o Get rid of the notion that nexus(4) (mostly) reflects an UPA bus by replacing ofw_upa.h and with ofw_nexus.h (which was repo-copied from ofw_upa.h) and renaming its content, which actually applies to all of Fireplane/Safari, JBus and UPA (in the host bus case), as appropriate. o Just use M_DEVBUF instead of a separate M_NEXUS malloc type for allocating the device info for the children of nexus(4). This is done in order to not need to export M_NEXUS when deriving drivers for subordinate busses from the nexus(4) class. o Use the DEFINE_CLASS_0() macro to declare the nexus(4) driver so we can derive subclasses from it. o Const'ify the nexus_excl_name and nexus_excl_type arrays as well as add 'associations' and 'rsc', which are pseudo-devices without resources and therefore of no real interest for nexus(4), to the former. o Let the nexus(4) device memory rman manage the entire 64-bit address space instead of just the UPA_MEMSTART to UPA_MEMEND subregion as Fireplane/Safari- and JBus-based machines use multiple ranges, which can't be as easily divided as in the case of UPA (limiting the address space only served for sanity checking anyway). o Use M_WAITOK instead of M_NOWAIT when allocating the device info for children of nexus(4) in order to give one less opportunity for adding devices to nexus(4) to fail. o While adapting the drivers affected by the above nexus(4) changes, change them to take advantage of rman_get_rid() instead of caching the RIDs assigned to allocated resources, now that the RIDs of resources are correctly set. o In iommu(4) and nexus(4) replace hard-coded functions names, which actually became outdated in several places, in panic strings and status massages with __func__. [1] o Use driver_filter_t in prototypes where appropriate. o Add my copyright to creator(4), fhc(4), nexus(4), psycho(4) and sbus(4) as I changed considerable amounts of these drivers as well as added a bunch of new features, workarounds for silicon bugs etc. o Fix some white space nits. Due to lack of access to Exx00 hardware, these changes, i.e. central(4) and fhc(4), couldn't be runtime tested on such a machine. Exx00 are currently reported to panic before trying to attach nexus(4) anyway though. PR: 76052 [1] Approved by: re (kensmith)
Notes: svn path=/head/; revision=167308
Diffstat (limited to 'sys/sparc64/fhc/fhc.c')
1 files changed, 126 insertions, 16 deletions
diff --git a/sys/sparc64/fhc/fhc.c b/sys/sparc64/fhc/fhc.c
index a7972c8e8bec..d3c0e280156f 100644
--- a/sys/sparc64/fhc/fhc.c
+++ b/sys/sparc64/fhc/fhc.c
@@ -1,5 +1,6 @@
* Copyright (c) 2003 Jake Burkholder.
+ * Copyright (c) 2005 Marius Strobl <marius@FreeBSD.org>
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
@@ -32,6 +33,7 @@ __FBSDID("$FreeBSD$");
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
+#include <sys/module.h>
#include <sys/pcpu.h>
#include <dev/led/led.h>
@@ -46,7 +48,6 @@ __FBSDID("$FreeBSD$");
#include <sys/rman.h>
#include <sparc64/fhc/fhcreg.h>
-#include <sparc64/fhc/fhcvar.h>
#include <sparc64/sbus/ofw_sbus.h>
struct fhc_clr {
@@ -62,18 +63,87 @@ struct fhc_devinfo {
struct resource_list fdi_rl;
-static int fhc_intr_stub(void *);
+struct fhc_softc {
+ struct resource * sc_memres[FHC_NREG];
+ bus_space_handle_t sc_bh[FHC_NREG];
+ bus_space_tag_t sc_bt[FHC_NREG];
+ int sc_nrange;
+ struct sbus_ranges *sc_ranges;
+ uint32_t sc_board;
+ int sc_ign;
+ struct cdev *sc_led_dev;
+ int sc_flags;
+#define FHC_CENTRAL (1 << 0)
+static device_probe_t fhc_probe;
+static device_attach_t fhc_attach;
+static bus_print_child_t fhc_print_child;
+static bus_probe_nomatch_t fhc_probe_nomatch;
+static bus_setup_intr_t fhc_setup_intr;
+static bus_teardown_intr_t fhc_teardown_intr;
+static bus_alloc_resource_t fhc_alloc_resource;
+static bus_get_resource_list_t fhc_get_resource_list;
+static ofw_bus_get_devinfo_t fhc_get_devinfo;
+static driver_filter_t fhc_intr_stub;
static void fhc_led_func(void *, int);
static int fhc_print_res(struct fhc_devinfo *);
+static device_method_t fhc_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, fhc_probe),
+ DEVMETHOD(device_attach, fhc_attach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+ /* Bus interface */
+ DEVMETHOD(bus_print_child, fhc_print_child),
+ DEVMETHOD(bus_probe_nomatch, fhc_probe_nomatch),
+ DEVMETHOD(bus_setup_intr, fhc_setup_intr),
+ DEVMETHOD(bus_teardown_intr, fhc_teardown_intr),
+ DEVMETHOD(bus_alloc_resource, fhc_alloc_resource),
+ DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
+ DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+ DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+ DEVMETHOD(bus_get_resource_list, fhc_get_resource_list),
+ DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
+ /* ofw_bus interface */
+ DEVMETHOD(ofw_bus_get_devinfo, fhc_get_devinfo),
+ DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
+ DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
+ DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
+ DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
+ DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
+ { NULL, NULL }
+static driver_t fhc_driver = {
+ "fhc",
+ fhc_methods,
+ sizeof(struct fhc_softc),
+static devclass_t fhc_devclass;
+DRIVER_MODULE(fhc, central, fhc_driver, fhc_devclass, 0, 0);
+DRIVER_MODULE(fhc, nexus, fhc_driver, fhc_devclass, 0, 0);
+static int
fhc_probe(device_t dev)
- return (0);
+ if (strcmp(ofw_bus_get_name(dev), "fhc") == 0) {
+ device_set_desc(dev, "fhc");
+ return (0);
+ }
+ return (ENXIO);
+static int
fhc_attach(device_t dev)
char ledname[sizeof("boardXX")];
@@ -83,16 +153,48 @@ fhc_attach(device_t dev)
phandle_t child;
phandle_t node;
device_t cdev;
+ uint32_t board;
uint32_t ctrl;
uint32_t *intr;
uint32_t iv;
char *name;
+ int error;
+ int i;
int nintr;
int nreg;
- int i;
+ int rid;
sc = device_get_softc(dev);
- node = sc->sc_node;
+ node = ofw_bus_get_node(dev);
+ if (strcmp(device_get_name(device_get_parent(dev)), "central") == 0)
+ sc->sc_flags |= FHC_CENTRAL;
+ for (i = 0; i < FHC_NREG; i++) {
+ rid = i;
+ sc->sc_memres[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+ &rid, RF_ACTIVE);
+ if (sc->sc_memres[i] == NULL) {
+ device_printf(dev, "cannot allocate resource %d\n", i);
+ error = ENXIO;
+ goto fail_memres;
+ }
+ sc->sc_bt[i] = rman_get_bustag(sc->sc_memres[i]);
+ sc->sc_bh[i] = rman_get_bushandle(sc->sc_memres[i]);
+ }
+ if ((sc->sc_flags & FHC_CENTRAL) != 0) {
+ board = bus_space_read_4(sc->sc_bt[FHC_INTERNAL],
+ sc->sc_bh[FHC_INTERNAL], FHC_BSR);
+ sc->sc_board = ((board >> 16) & 0x1) | ((board >> 12) & 0xe);
+ } else {
+ if (OF_getprop(node, "board#", &sc->sc_board,
+ sizeof(sc->sc_board)) == -1) {
+ device_printf(dev, "cannot get board number\n");
+ error = ENXIO;
+ goto fail_memres;
+ }
+ }
device_printf(dev, "board %d, ", sc->sc_board);
if (OF_getprop_alloc(node, "board-model", 1, (void **)&name) != -1) {
@@ -125,8 +227,9 @@ fhc_attach(device_t dev)
sc->sc_nrange = OF_getprop_alloc(node, "ranges",
sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
if (sc->sc_nrange == -1) {
- device_printf(dev, "can't get ranges\n");
- return (ENXIO);
+ device_printf(dev, "cannot get ranges\n");
+ error = ENXIO;
+ goto fail_memres;
if ((sc->sc_flags & FHC_CENTRAL) == 0) {
@@ -179,9 +282,16 @@ fhc_attach(device_t dev)
return (bus_generic_attach(dev));
+ fail_memres:
+ for (i = 0; i < FHC_NREG; i++)
+ if (sc->sc_memres[i] != NULL)
+ bus_release_resource(dev, SYS_RES_MEMORY,
+ rman_get_rid(sc->sc_memres[i]), sc->sc_memres[i]);
+ return (error);
+static int
fhc_print_child(device_t dev, device_t child)
int rv;
@@ -192,7 +302,7 @@ fhc_print_child(device_t dev, device_t child)
return (rv);
+static void
fhc_probe_nomatch(device_t dev, device_t child)
const char *type;
@@ -204,7 +314,7 @@ fhc_probe_nomatch(device_t dev, device_t child)
type != NULL ? type : "unknown");
+static int
fhc_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
driver_filter_t *filt, driver_intr_t *func, void *arg, void **cookiep)
@@ -269,7 +379,7 @@ fhc_setup_intr(device_t bus, device_t child, struct resource *r, int flags,
return (error);
+static int
fhc_teardown_intr(device_t bus, device_t child, struct resource *r,
void *cookie)
@@ -295,7 +405,7 @@ fhc_intr_stub(void *arg)
-struct resource *
+static struct resource *
fhc_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
@@ -354,7 +464,7 @@ fhc_alloc_resource(device_t bus, device_t child, int type, int *rid,
return (res);
-struct resource_list *
+static struct resource_list *
fhc_get_resource_list(device_t bus, device_t child)
struct fhc_devinfo *fdi;
@@ -363,7 +473,7 @@ fhc_get_resource_list(device_t bus, device_t child)
return (&fdi->fdi_rl);
-const struct ofw_bus_devinfo *
+static const struct ofw_bus_devinfo *
fhc_get_devinfo(device_t bus, device_t child)
struct fhc_devinfo *fdi;