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-rw-r--r--drivers/bcma/bcma_private.h7
-rw-r--r--drivers/bcma/driver_chipcommon.c5
-rw-r--r--drivers/bcma/driver_pci.c5
-rw-r--r--drivers/bcma/main.c46
-rw-r--r--drivers/bcma/scan.c95
-rw-r--r--include/linux/bcma/bcma.h1
-rw-r--r--include/linux/bcma/bcma_driver_chipcommon.h1
7 files changed, 154 insertions, 6 deletions
diff --git a/drivers/bcma/bcma_private.h b/drivers/bcma/bcma_private.h
index e02ff21835c9..b97633d0d237 100644
--- a/drivers/bcma/bcma_private.h
+++ b/drivers/bcma/bcma_private.h
@@ -15,9 +15,16 @@ struct bcma_bus;
/* main.c */
int bcma_bus_register(struct bcma_bus *bus);
void bcma_bus_unregister(struct bcma_bus *bus);
+int __init bcma_bus_early_register(struct bcma_bus *bus,
+ struct bcma_device *core_cc,
+ struct bcma_device *core_mips);
/* scan.c */
int bcma_bus_scan(struct bcma_bus *bus);
+int __init bcma_bus_scan_early(struct bcma_bus *bus,
+ struct bcma_device_id *match,
+ struct bcma_device *core);
+void bcma_init_bus(struct bcma_bus *bus);
/* sprom.c */
int bcma_sprom_get(struct bcma_bus *bus);
diff --git a/drivers/bcma/driver_chipcommon.c b/drivers/bcma/driver_chipcommon.c
index 851e05bc948a..acca327db3de 100644
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -26,6 +26,9 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
u32 leddc_on = 10;
u32 leddc_off = 90;
+ if (cc->setup_done)
+ return;
+
if (cc->core->id.rev >= 11)
cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
@@ -52,6 +55,8 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) |
(leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
}
+
+ cc->setup_done = true;
}
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
diff --git a/drivers/bcma/driver_pci.c b/drivers/bcma/driver_pci.c
index 25f3ddf33823..4e082100fa9b 100644
--- a/drivers/bcma/driver_pci.c
+++ b/drivers/bcma/driver_pci.c
@@ -189,6 +189,9 @@ static bool bcma_core_pci_is_in_hostmode(struct bcma_drv_pci *pc)
void bcma_core_pci_init(struct bcma_drv_pci *pc)
{
+ if (pc->setup_done)
+ return;
+
if (bcma_core_pci_is_in_hostmode(pc)) {
#ifdef CONFIG_BCMA_DRIVER_PCI_HOSTMODE
bcma_core_pci_hostmode_init(pc);
@@ -198,6 +201,8 @@ void bcma_core_pci_init(struct bcma_drv_pci *pc)
} else {
bcma_core_pci_clientmode_init(pc);
}
+
+ pc->setup_done = true;
}
int bcma_core_pci_irq_ctl(struct bcma_drv_pci *pc, struct bcma_device *core,
diff --git a/drivers/bcma/main.c b/drivers/bcma/main.c
index 873e2e4ac55f..360a289738fc 100644
--- a/drivers/bcma/main.c
+++ b/drivers/bcma/main.c
@@ -169,6 +169,52 @@ void bcma_bus_unregister(struct bcma_bus *bus)
bcma_unregister_cores(bus);
}
+int __init bcma_bus_early_register(struct bcma_bus *bus,
+ struct bcma_device *core_cc,
+ struct bcma_device *core_mips)
+{
+ int err;
+ struct bcma_device *core;
+ struct bcma_device_id match;
+
+ bcma_init_bus(bus);
+
+ match.manuf = BCMA_MANUF_BCM;
+ match.id = BCMA_CORE_CHIPCOMMON;
+ match.class = BCMA_CL_SIM;
+ match.rev = BCMA_ANY_REV;
+
+ /* Scan for chip common core */
+ err = bcma_bus_scan_early(bus, &match, core_cc);
+ if (err) {
+ pr_err("Failed to scan for common core: %d\n", err);
+ return -1;
+ }
+
+ match.manuf = BCMA_MANUF_MIPS;
+ match.id = BCMA_CORE_MIPS_74K;
+ match.class = BCMA_CL_SIM;
+ match.rev = BCMA_ANY_REV;
+
+ /* Scan for mips core */
+ err = bcma_bus_scan_early(bus, &match, core_mips);
+ if (err) {
+ pr_err("Failed to scan for mips core: %d\n", err);
+ return -1;
+ }
+
+ /* Init CC core */
+ core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
+ if (core) {
+ bus->drv_cc.core = core;
+ bcma_core_chipcommon_init(&bus->drv_cc);
+ }
+
+ pr_info("Early bus registered\n");
+
+ return 0;
+}
+
int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
{
drv->drv.name = drv->name;
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;
+}
diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h
index 8c96654bef16..e31c9b462221 100644
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -190,6 +190,7 @@ struct bcma_bus {
struct bcma_device *mapped_core;
struct list_head cores;
u8 nr_cores;
+ u8 init_done:1;
struct bcma_drv_cc drv_cc;
struct bcma_drv_pci drv_pci;
diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h
index a0f684615ae5..c8b4cf7f9fae 100644
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -252,6 +252,7 @@ struct bcma_drv_cc {
u32 status;
u32 capabilities;
u32 capabilities_ext;
+ u8 setup_done:1;
/* Fast Powerup Delay constant */
u16 fast_pwrup_delay;
struct bcma_chipcommon_pmu pmu;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.