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path: root/drivers/bcma/scan.c
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Diffstat (limited to 'drivers/bcma/scan.c')
-rw-r--r--drivers/bcma/scan.c95
1 files changed, 89 insertions, 6 deletions
diff --git a/drivers/bcma/scan.c b/drivers/bcma/scan.c
index 79705534217e..bf9f80652773 100644
--- a/drivers/bcma/scan.c
+++ b/drivers/bcma/scan.c
@@ -200,7 +200,20 @@ static s32 bcma_erom_get_addr_desc(struct bcma_bus *bus, u32 **eromptr,
return addrl;
}
+static struct bcma_device *bcma_find_core_by_index(struct bcma_bus *bus,
+ u16 index)
+{
+ struct bcma_device *core;
+
+ list_for_each_entry(core, &bus->cores, list) {
+ if (core->core_index == index)
+ return core;
+ }
+ return NULL;
+}
+
static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
+ struct bcma_device_id *match, int core_num,
struct bcma_device *core)
{
s32 tmp;
@@ -251,6 +264,21 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
return -ENXIO;
}
+ if (bcma_find_core_by_index(bus, core_num)) {
+ bcma_erom_skip_component(bus, eromptr);
+ return -ENODEV;
+ }
+
+ if (match && ((match->manuf != BCMA_ANY_MANUF &&
+ match->manuf != core->id.manuf) ||
+ (match->id != BCMA_ANY_ID && match->id != core->id.id) ||
+ (match->rev != BCMA_ANY_REV && match->rev != core->id.rev) ||
+ (match->class != BCMA_ANY_CLASS && match->class != core->id.class)
+ )) {
+ bcma_erom_skip_component(bus, eromptr);
+ return -ENODEV;
+ }
+
/* get & parse master ports */
for (i = 0; i < ports[0]; i++) {
u32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
@@ -312,10 +340,13 @@ static int bcma_get_next_core(struct bcma_bus *bus, u32 __iomem **eromptr,
return 0;
}
-static void bcma_init_bus(struct bcma_bus *bus)
+void bcma_init_bus(struct bcma_bus *bus)
{
s32 tmp;
+ if (bus->init_done)
+ return;
+
INIT_LIST_HEAD(&bus->cores);
bus->nr_cores = 0;
@@ -325,6 +356,7 @@ static void bcma_init_bus(struct bcma_bus *bus)
bus->chipinfo.id = (tmp & BCMA_CC_ID_ID) >> BCMA_CC_ID_ID_SHIFT;
bus->chipinfo.rev = (tmp & BCMA_CC_ID_REV) >> BCMA_CC_ID_REV_SHIFT;
bus->chipinfo.pkg = (tmp & BCMA_CC_ID_PKG) >> BCMA_CC_ID_PKG_SHIFT;
+ bus->init_done = true;
}
int bcma_bus_scan(struct bcma_bus *bus)
@@ -332,7 +364,7 @@ int bcma_bus_scan(struct bcma_bus *bus)
u32 erombase;
u32 __iomem *eromptr, *eromend;
- int err;
+ int err, core_num = 0;
bcma_init_bus(bus);
@@ -349,23 +381,74 @@ int bcma_bus_scan(struct bcma_bus *bus)
INIT_LIST_HEAD(&core->list);
core->bus = bus;
- err = bcma_get_next_core(bus, &eromptr, core);
- if (err == -ENXIO)
+ err = bcma_get_next_core(bus, &eromptr, NULL, core_num, core);
+ if (err == -ENODEV) {
+ core_num++;
+ continue;
+ } else if (err == -ENXIO)
continue;
else if (err == -ESPIPE)
break;
else if (err < 0)
return err;
+ core->core_index = core_num++;
+ bus->nr_cores++;
+
pr_info("Core %d found: %s "
"(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
- bus->nr_cores, bcma_device_name(&core->id),
+ core->core_index, bcma_device_name(&core->id),
core->id.manuf, core->id.id, core->id.rev,
core->id.class);
- core->core_index = bus->nr_cores++;
list_add(&core->list, &bus->cores);
}
return 0;
}
+
+int __init bcma_bus_scan_early(struct bcma_bus *bus,
+ struct bcma_device_id *match,
+ struct bcma_device *core)
+{
+ u32 erombase;
+ u32 __iomem *eromptr, *eromend;
+
+ int err, core_num = 0;
+
+ erombase = bcma_scan_read32(bus, 0, BCMA_CC_EROM);
+ eromptr = bus->mmio;
+ eromend = eromptr + BCMA_CORE_SIZE / sizeof(u32);
+
+ bcma_scan_switch_core(bus, erombase);
+
+ while (eromptr < eromend) {
+ memset(core, 0, sizeof(*core));
+ INIT_LIST_HEAD(&core->list);
+ core->bus = bus;
+
+ err = bcma_get_next_core(bus, &eromptr, match, core_num, core);
+ if (err == -ENODEV) {
+ core_num++;
+ continue;
+ } else if (err == -ENXIO)
+ continue;
+ else if (err == -ESPIPE)
+ break;
+ else if (err < 0)
+ return err;
+
+ core->core_index = core_num++;
+ bus->nr_cores++;
+ pr_info("Core %d found: %s "
+ "(manuf 0x%03X, id 0x%03X, rev 0x%02X, class 0x%X)\n",
+ core->core_index, bcma_device_name(&core->id),
+ core->id.manuf, core->id.id, core->id.rev,
+ core->id.class);
+
+ list_add(&core->list, &bus->cores);
+ return 0;
+ }
+
+ return -ENODEV;
+}