mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-18 17:14:03 +02:00
31a40f97ef
* add new patches for bcm4716 SoC * add support for serial flash on bcma bus git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27723 3c298f89-4303-0410-b956-a3cf2f4a3e73
322 lines
8.8 KiB
Diff
322 lines
8.8 KiB
Diff
From beb36a1a49227ca6c5778a667aefc8cd3fd56a4f Mon Sep 17 00:00:00 2001
|
|
From: Hauke Mehrtens <hauke@hauke-m.de>
|
|
Date: Sat, 18 Jun 2011 14:30:55 +0200
|
|
Subject: [PATCH 03/22] bcma: add functions to scan cores needed on SoCs
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
The chip common and mips core have to be setup early in the boot
|
|
process to get the cpu clock.
|
|
bcma_bus_early_register() gets pointers to some space to store the core
|
|
data and searches for the chip common and mips core and initializes
|
|
chip common. After that was done and the kernel is out of early boot we
|
|
just have to run bcma_bus_register() and it will search for the other
|
|
cores, initialize and register them.
|
|
The cores are getting the same numbers as before.
|
|
|
|
Acked-by: Rafał Miłecki <zajec5@gmail.com>
|
|
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
|
|
---
|
|
drivers/bcma/bcma_private.h | 7 ++
|
|
drivers/bcma/driver_chipcommon.c | 5 ++
|
|
drivers/bcma/driver_pci.c | 5 ++
|
|
drivers/bcma/main.c | 46 +++++++++++++
|
|
drivers/bcma/scan.c | 95 +++++++++++++++++++++++++--
|
|
include/linux/bcma/bcma.h | 1 +
|
|
include/linux/bcma/bcma_driver_chipcommon.h | 1 +
|
|
7 files changed, 154 insertions(+), 6 deletions(-)
|
|
|
|
--- 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);
|
|
--- a/drivers/bcma/driver_chipcommon.c
|
|
+++ b/drivers/bcma/driver_chipcommon.c
|
|
@@ -26,6 +26,9 @@ void bcma_core_chipcommon_init(struct bc
|
|
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 bc
|
|
((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 */
|
|
--- a/drivers/bcma/driver_pci.c
|
|
+++ b/drivers/bcma/driver_pci.c
|
|
@@ -187,6 +187,9 @@ static bool bcma_core_pci_is_in_hostmode
|
|
|
|
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);
|
|
@@ -196,6 +199,8 @@ void bcma_core_pci_init(struct bcma_drv_
|
|
} 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,
|
|
--- a/drivers/bcma/main.c
|
|
+++ b/drivers/bcma/main.c
|
|
@@ -169,6 +169,52 @@ void bcma_bus_unregister(struct bcma_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;
|
|
--- a/drivers/bcma/scan.c
|
|
+++ b/drivers/bcma/scan.c
|
|
@@ -200,7 +200,20 @@ static s32 bcma_erom_get_addr_desc(struc
|
|
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 bcm
|
|
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 bcm
|
|
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_bu
|
|
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;
|
|
+}
|
|
--- 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;
|
|
--- 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;
|