+++ /dev/null
-/*
- * wl_glue.c: Broadcom WL support module providing a unified SSB/BCMA handling.
- * Copyright (C) 2011 Jo-Philipp Wich <jo@mein.io>
- */
-
-#include "wl_glue.h"
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-#ifdef CONFIG_BCM47XX
-#include <bcm47xx.h>
-#endif
-
-#ifdef CONFIG_SSB
-#include <linux/ssb/ssb.h>
-#endif
-
-#ifdef CONFIG_BCMA
-#include <linux/bcma/bcma.h>
-#endif
-
-MODULE_AUTHOR("Jo-Philipp Wich (jo@mein.io)");
-MODULE_DESCRIPTION("Broadcom WL SSB/BCMA compatibility layer");
-MODULE_LICENSE("GPL");
-
-static wl_glue_attach_cb_t attach_cb = NULL;
-static wl_glue_remove_cb_t remove_cb = NULL;
-static enum wl_glue_bus_type active_bus_type = WL_GLUE_BUS_TYPE_UNSPEC;
-static int wl_glue_attached = 0;
-
-
-#ifdef CONFIG_SSB
-static int wl_glue_ssb_probe(struct ssb_device *dev, const struct ssb_device_id *id)
-{
- void *mmio;
- void *wldev;
-
- if (!attach_cb)
- {
- pr_err("No attach callback registered\n");
- return -ENOSYS;
- }
-
- if (dev->bus->bustype != SSB_BUSTYPE_SSB)
- {
- pr_err("Attaching to SSB behind PCI is not supported. Please remove the b43 ssb bridge\n");
- return -EINVAL;
- }
-
- mmio = (void *) 0x18000000 + dev->core_index * 0x1000;
- wldev = attach_cb(id->vendor, id->coreid, (ulong)mmio, dev, dev->irq);
-
- if (!wldev)
- {
- pr_err("The attach callback failed, SSB probe aborted\n");
- return -ENODEV;
- }
-
- ssb_set_drvdata(dev, wldev);
- return 0;
-}
-
-static void wl_glue_ssb_remove(struct ssb_device *dev)
-{
- void *wldev = ssb_get_drvdata(dev);
-
- if (remove_cb)
- remove_cb(wldev);
-
- ssb_set_drvdata(dev, NULL);
-}
-
-static const struct ssb_device_id wl_glue_ssb_tbl[] = {
- SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_80211, SSB_ANY_REV),
- {},
-};
-
-static struct ssb_driver wl_glue_ssb_driver = {
- .name = KBUILD_MODNAME,
- .id_table = wl_glue_ssb_tbl,
- .probe = wl_glue_ssb_probe,
- .remove = wl_glue_ssb_remove,
-};
-#endif /* CONFIG_SSB */
-
-#ifdef CONFIG_BCMA
-static int wl_glue_bcma_probe(struct bcma_device *dev)
-{
- void *wldev;
-
- if (!attach_cb)
- {
- pr_err("No attach callback registered\n");
- return -ENOSYS;
- }
-
- if (dev->bus->hosttype != BCMA_HOSTTYPE_SOC)
- {
- pr_err("Unsupported BCMA bus type %d\n", dev->bus->hosttype);
- return -EINVAL;
- }
-
- /*
- * NB:
- * 0x18000000 = BCMA_ADDR_BASE
- * 0x1000 = BCMA_CORE_SIZE
- */
-
- wldev = attach_cb(dev->id.manuf, dev->id.id, (ulong)dev->addr, dev, dev->irq);
-
- if (!wldev)
- {
- pr_err("The attach callback failed, BCMA probe aborted\n");
- return -ENODEV;
- }
-
- bcma_set_drvdata(dev, wldev);
- return 0;
-}
-
-static void wl_glue_bcma_remove(struct bcma_device *dev)
-{
- void *wldev = bcma_get_drvdata(dev);
-
- if (remove_cb)
- remove_cb(wldev);
-
- bcma_set_drvdata(dev, NULL);
-}
-
-static const struct bcma_device_id wl_glue_bcma_tbl[] = {
- BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_80211, BCMA_ANY_REV, BCMA_ANY_CLASS),
- {},
-};
-
-static struct bcma_driver wl_glue_bcma_driver = {
- .name = KBUILD_MODNAME,
- .id_table = wl_glue_bcma_tbl,
- .probe = wl_glue_bcma_probe,
- .remove = wl_glue_bcma_remove,
-};
-#endif /* CONFIG_BCMA */
-
-
-void wl_glue_set_attach_callback(wl_glue_attach_cb_t cb)
-{
- attach_cb = cb;
-}
-EXPORT_SYMBOL(wl_glue_set_attach_callback);
-
-void wl_glue_set_remove_callback(wl_glue_remove_cb_t cb)
-{
- remove_cb = cb;
-}
-EXPORT_SYMBOL(wl_glue_set_remove_callback);
-
-int wl_glue_register(void)
-{
- int err;
-
- switch(active_bus_type)
- {
-#ifdef CONFIG_SSB
- case WL_GLUE_BUS_TYPE_SSB:
- err = ssb_driver_register(&wl_glue_ssb_driver);
- break;
-#endif /* CONFIG_SSB */
-
-#ifdef CONFIG_BCMA
- case WL_GLUE_BUS_TYPE_BCMA:
- err = bcma_driver_register(&wl_glue_bcma_driver);
- break;
-#endif /* CONFIG_BCMA */
-
- default:
- pr_err("Not attaching through glue driver due to unsupported bus\n");
- err = -ENOSYS;
- break;
- }
-
- if (!err)
- {
- pr_info("SSB/BCMA glue driver successfully attached\n");
- wl_glue_attached = 1;
- }
-
- return err;
-}
-EXPORT_SYMBOL(wl_glue_register);
-
-int wl_glue_unregister(void)
-{
- int err;
-
- if (!wl_glue_attached)
- return -ENOSYS;
-
- switch (active_bus_type)
- {
-#ifdef CONFIG_SSB
- case WL_GLUE_BUS_TYPE_SSB:
- ssb_driver_unregister(&wl_glue_ssb_driver);
- err = 0;
- break;
-#endif /* CONFIG_SSB */
-
-#ifdef CONFIG_BCMA
- case WL_GLUE_BUS_TYPE_BCMA:
- bcma_driver_unregister(&wl_glue_bcma_driver);
- err = 0;
- break;
-#endif /* CONFIG_BCMA */
-
- default:
- pr_err("Not removing glue driver due to unsupported bus\n");
- err = -ENOSYS;
- break;
- }
-
- if (!err)
- {
- pr_info("SSB/BCMA glue driver successfully detached\n");
- wl_glue_attached = 0;
- }
-
- return err;
-}
-EXPORT_SYMBOL(wl_glue_unregister);
-
-struct device * wl_glue_get_dmadev(void *dev)
-{
- struct device *dma_dev;
-
- switch (active_bus_type)
- {
-#ifdef CONFIG_SSB
- case WL_GLUE_BUS_TYPE_SSB:
- dma_dev = ((struct ssb_device *)dev)->dma_dev;
- break;
-#endif /* CONFIG_SSB */
-
-#ifdef CONFIG_BCMA
- case WL_GLUE_BUS_TYPE_BCMA:
- dma_dev = ((struct bcma_device *)dev)->dma_dev;
- break;
-#endif /* CONFIG_BCMA */
-
- default:
- BUG();
- dma_dev = NULL;
- break;
- }
-
- return dma_dev;
-}
-EXPORT_SYMBOL(wl_glue_get_dmadev);
-
-
-static int __init wl_glue_init(void)
-{
-#ifdef CONFIG_BCM47XX
- /*
- * BCM47xx currently supports either SSB or BCMA bus,
- * determine the used one from the info set by the
- * platform setup code.
- */
- switch (bcm47xx_bus_type)
- {
-#ifdef CONFIG_BCM47XX_SSB
- case BCM47XX_BUS_TYPE_SSB:
- active_bus_type = WL_GLUE_BUS_TYPE_SSB;
- break;
-#endif /* CONFIG_BCM47XX_SSB */
-
-#ifdef CONFIG_BCM47XX_BCMA
- case BCM47XX_BUS_TYPE_BCMA:
- active_bus_type = WL_GLUE_BUS_TYPE_BCMA;
- break;
-#endif /* CONFIG_BCM47XX_BCMA */
- }
-#endif /* CONFIG_BCM47XX */
-
-#ifdef CONFIG_BCM63XX
-#ifdef CONFIG_SSB
- /*
- * BCM63xx currently only uses SSB, so assume that.
- */
- active_bus_type = WL_GLUE_BUS_TYPE_SSB;
-#endif /* CONFIG_SSB */
-#endif /* CONFIG_BCM63XX */
-
- /* do not fail here, let wl_glue_register() return -ENOSYS later */
- if (active_bus_type == WL_GLUE_BUS_TYPE_UNSPEC)
- pr_err("Unable to determine used system bus type\n");
-
- return 0;
-}
-
-static void __exit wl_glue_exit(void)
-{
- if (wl_glue_attached)
- {
- if (wl_glue_unregister())
- pr_err("Failed to unregister glue driver\n");
-
- wl_glue_attached = 0;
- }
-
- return;
-}
-
-module_init(wl_glue_init);
-module_exit(wl_glue_exit);
projects / openwrt / openwrt.git / blobdiff