mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 09:16:39 +07:00
534e7a4566
The SoCs like the bcm4716 do not have a sprom on the bcma bus like a pcie device. It stores the values in some partition on flash memory. For ssb this informations are read out in the bcm47xx arch code, something like that should also be implemented for bcma. Without this patch bcma panics on SoCs. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
258 lines
5.9 KiB
C
258 lines
5.9 KiB
C
/*
|
|
* Broadcom specific AMBA
|
|
* Bus subsystem
|
|
*
|
|
* Licensed under the GNU/GPL. See COPYING for details.
|
|
*/
|
|
|
|
#include "bcma_private.h"
|
|
#include <linux/bcma/bcma.h>
|
|
#include <linux/slab.h>
|
|
|
|
MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int bcma_bus_match(struct device *dev, struct device_driver *drv);
|
|
static int bcma_device_probe(struct device *dev);
|
|
static int bcma_device_remove(struct device *dev);
|
|
|
|
static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
return sprintf(buf, "0x%03X\n", core->id.manuf);
|
|
}
|
|
static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
return sprintf(buf, "0x%03X\n", core->id.id);
|
|
}
|
|
static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
return sprintf(buf, "0x%02X\n", core->id.rev);
|
|
}
|
|
static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
return sprintf(buf, "0x%X\n", core->id.class);
|
|
}
|
|
static struct device_attribute bcma_device_attrs[] = {
|
|
__ATTR_RO(manuf),
|
|
__ATTR_RO(id),
|
|
__ATTR_RO(rev),
|
|
__ATTR_RO(class),
|
|
__ATTR_NULL,
|
|
};
|
|
|
|
static struct bus_type bcma_bus_type = {
|
|
.name = "bcma",
|
|
.match = bcma_bus_match,
|
|
.probe = bcma_device_probe,
|
|
.remove = bcma_device_remove,
|
|
.dev_attrs = bcma_device_attrs,
|
|
};
|
|
|
|
static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
|
|
{
|
|
struct bcma_device *core;
|
|
|
|
list_for_each_entry(core, &bus->cores, list) {
|
|
if (core->id.id == coreid)
|
|
return core;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void bcma_release_core_dev(struct device *dev)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
kfree(core);
|
|
}
|
|
|
|
static int bcma_register_cores(struct bcma_bus *bus)
|
|
{
|
|
struct bcma_device *core;
|
|
int err, dev_id = 0;
|
|
|
|
list_for_each_entry(core, &bus->cores, list) {
|
|
/* We support that cores ourself */
|
|
switch (core->id.id) {
|
|
case BCMA_CORE_CHIPCOMMON:
|
|
case BCMA_CORE_PCI:
|
|
case BCMA_CORE_PCIE:
|
|
continue;
|
|
}
|
|
|
|
core->dev.release = bcma_release_core_dev;
|
|
core->dev.bus = &bcma_bus_type;
|
|
dev_set_name(&core->dev, "bcma%d:%d", 0/*bus->num*/, dev_id);
|
|
|
|
switch (bus->hosttype) {
|
|
case BCMA_HOSTTYPE_PCI:
|
|
core->dev.parent = &bus->host_pci->dev;
|
|
core->dma_dev = &bus->host_pci->dev;
|
|
core->irq = bus->host_pci->irq;
|
|
break;
|
|
case BCMA_HOSTTYPE_NONE:
|
|
case BCMA_HOSTTYPE_SDIO:
|
|
break;
|
|
}
|
|
|
|
err = device_register(&core->dev);
|
|
if (err) {
|
|
pr_err("Could not register dev for core 0x%03X\n",
|
|
core->id.id);
|
|
continue;
|
|
}
|
|
core->dev_registered = true;
|
|
dev_id++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void bcma_unregister_cores(struct bcma_bus *bus)
|
|
{
|
|
struct bcma_device *core;
|
|
|
|
list_for_each_entry(core, &bus->cores, list) {
|
|
if (core->dev_registered)
|
|
device_unregister(&core->dev);
|
|
}
|
|
}
|
|
|
|
int bcma_bus_register(struct bcma_bus *bus)
|
|
{
|
|
int err;
|
|
struct bcma_device *core;
|
|
|
|
/* Scan for devices (cores) */
|
|
err = bcma_bus_scan(bus);
|
|
if (err) {
|
|
pr_err("Failed to scan: %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);
|
|
}
|
|
|
|
/* Init PCIE core */
|
|
core = bcma_find_core(bus, BCMA_CORE_PCIE);
|
|
if (core) {
|
|
bus->drv_pci.core = core;
|
|
bcma_core_pci_init(&bus->drv_pci);
|
|
}
|
|
|
|
/* Try to get SPROM */
|
|
err = bcma_sprom_get(bus);
|
|
if (err == -ENOENT) {
|
|
pr_err("No SPROM available\n");
|
|
} else if (err) {
|
|
pr_err("Failed to get SPROM: %d\n", err);
|
|
return -ENOENT;
|
|
}
|
|
|
|
/* Register found cores */
|
|
bcma_register_cores(bus);
|
|
|
|
pr_info("Bus registered\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
void bcma_bus_unregister(struct bcma_bus *bus)
|
|
{
|
|
bcma_unregister_cores(bus);
|
|
}
|
|
|
|
int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
|
|
{
|
|
drv->drv.name = drv->name;
|
|
drv->drv.bus = &bcma_bus_type;
|
|
drv->drv.owner = owner;
|
|
|
|
return driver_register(&drv->drv);
|
|
}
|
|
EXPORT_SYMBOL_GPL(__bcma_driver_register);
|
|
|
|
void bcma_driver_unregister(struct bcma_driver *drv)
|
|
{
|
|
driver_unregister(&drv->drv);
|
|
}
|
|
EXPORT_SYMBOL_GPL(bcma_driver_unregister);
|
|
|
|
static int bcma_bus_match(struct device *dev, struct device_driver *drv)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
|
|
const struct bcma_device_id *cid = &core->id;
|
|
const struct bcma_device_id *did;
|
|
|
|
for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
|
|
if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
|
|
(did->id == cid->id || did->id == BCMA_ANY_ID) &&
|
|
(did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
|
|
(did->class == cid->class || did->class == BCMA_ANY_CLASS))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int bcma_device_probe(struct device *dev)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
|
|
drv);
|
|
int err = 0;
|
|
|
|
if (adrv->probe)
|
|
err = adrv->probe(core);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int bcma_device_remove(struct device *dev)
|
|
{
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
|
|
drv);
|
|
|
|
if (adrv->remove)
|
|
adrv->remove(core);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init bcma_modinit(void)
|
|
{
|
|
int err;
|
|
|
|
err = bus_register(&bcma_bus_type);
|
|
if (err)
|
|
return err;
|
|
|
|
#ifdef CONFIG_BCMA_HOST_PCI
|
|
err = bcma_host_pci_init();
|
|
if (err) {
|
|
pr_err("PCI host initialization failed\n");
|
|
err = 0;
|
|
}
|
|
#endif
|
|
|
|
return err;
|
|
}
|
|
fs_initcall(bcma_modinit);
|
|
|
|
static void __exit bcma_modexit(void)
|
|
{
|
|
#ifdef CONFIG_BCMA_HOST_PCI
|
|
bcma_host_pci_exit();
|
|
#endif
|
|
bus_unregister(&bcma_bus_type);
|
|
}
|
|
module_exit(bcma_modexit)
|