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-rw-r--r--target/linux/brcm47xx/patches-3.0/0003-bcma-add-functions-to-scan-cores-needed-on-SoCs.patch307
1 files changed, 307 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.0/0003-bcma-add-functions-to-scan-cores-needed-on-SoCs.patch b/target/linux/brcm47xx/patches-3.0/0003-bcma-add-functions-to-scan-cores-needed-on-SoCs.patch
new file mode 100644
index 000000000..c18249d1d
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.0/0003-bcma-add-functions-to-scan-cores-needed-on-SoCs.patch
@@ -0,0 +1,307 @@
+From 9a920f4d8eed485f7b73e9b13dab0e49c64d3ff8 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 03/14] bcma: add functions to scan cores needed on SoCs
+
+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.
+
+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 | 3 +
+ drivers/bcma/main.c | 45 +++++++++++++
+ drivers/bcma/scan.c | 95 +++++++++++++++++++++++++--
+ include/linux/bcma/bcma.h | 1 +
+ include/linux/bcma/bcma_driver_chipcommon.h | 1 +
+ 7 files changed, 151 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
+@@ -23,6 +23,9 @@ static inline u32 bcma_cc_write32_masked
+
+ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
+ {
++ 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);
+@@ -38,6 +41,8 @@ void bcma_core_chipcommon_init(struct bc
+ bcma_pmu_init(cc);
+ if (cc->capabilities & BCMA_CC_CAP_PCTL)
+ pr_err("Power control not implemented!\n");
++
++ 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
+@@ -159,7 +159,10 @@ static void bcma_pcicore_serdes_workarou
+
+ void bcma_core_pci_init(struct bcma_drv_pci *pc)
+ {
++ if (pc->setup_done)
++ return;
+ bcma_pcicore_serdes_workaround(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
+@@ -167,6 +167,51 @@ 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 devices (cores) */
++ 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;
++
++ 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
+@@ -185,6 +185,7 @@ 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
+@@ -259,6 +259,7 @@ 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;
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