diff options
Diffstat (limited to 'drivers/net/wireless/bcmdhd/dhd_linux_platdev.c')
| -rw-r--r-- | drivers/net/wireless/bcmdhd/dhd_linux_platdev.c | 650 |
1 files changed, 650 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcmdhd/dhd_linux_platdev.c b/drivers/net/wireless/bcmdhd/dhd_linux_platdev.c new file mode 100644 index 0000000..6cc53f7 --- /dev/null +++ b/drivers/net/wireless/bcmdhd/dhd_linux_platdev.c @@ -0,0 +1,650 @@ +/* + * Linux platform device for DHD WLAN adapter + * + * Copyright (C) 1999-2014, Broadcom Corporation + * + * Unless you and Broadcom execute a separate written software license + * agreement governing use of this software, this software is licensed to you + * under the terms of the GNU General Public License version 2 (the "GPL"), + * available at http://www.broadcom.com/licenses/GPLv2.php, with the + * following added to such license: + * + * As a special exception, the copyright holders of this software give you + * permission to link this software with independent modules, and to copy and + * distribute the resulting executable under terms of your choice, provided that + * you also meet, for each linked independent module, the terms and conditions of + * the license of that module. An independent module is a module which is not + * derived from this software. The special exception does not apply to any + * modifications of the software. + * + * Notwithstanding the above, under no circumstances may you combine this + * software in any way with any other Broadcom software provided under a license + * other than the GPL, without Broadcom's express prior written consent. + * + * $Id: dhd_linux_platdev.c 401742 2013-05-13 15:03:21Z $ + */ +#include <typedefs.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <bcmutils.h> +#include <linux_osl.h> +#include <dhd_dbg.h> +#include <dngl_stats.h> +#include <dhd.h> +#include <dhd_bus.h> +#include <dhd_linux.h> +#include <wl_android.h> +#if defined(CONFIG_WIFI_CONTROL_FUNC) +#include <linux/wlan_plat.h> +#endif + +#if !defined(CONFIG_WIFI_CONTROL_FUNC) +struct wifi_platform_data { + int (*set_power)(int val); + int (*set_reset)(int val); + int (*set_carddetect)(int val); + void *(*mem_prealloc)(int section, unsigned long size); + int (*get_mac_addr)(unsigned char *buf); + void *(*get_country_code)(char *ccode); +}; +#endif /* CONFIG_WIFI_CONTROL_FUNC */ + +#define WIFI_PLAT_NAME "bcmdhd_wlan" +#define WIFI_PLAT_NAME2 "bcm4329_wlan" +#define WIFI_PLAT_EXT "bcmdhd_wifi_platform" + +bool cfg_multichip = FALSE; +bcmdhd_wifi_platdata_t *dhd_wifi_platdata = NULL; +static int wifi_plat_dev_probe_ret = 0; +static bool is_power_on = FALSE; +#ifdef DHD_OF_SUPPORT +static bool dts_enabled = TRUE; +extern struct resource dhd_wlan_resources; +extern struct wifi_platform_data dhd_wlan_control; +#else +static bool dts_enabled = FALSE; +struct resource dhd_wlan_resources = {0}; +struct wifi_platform_data dhd_wlan_control = {0}; +#endif /* CONFIG_OF && !defined(CONFIG_ARCH_MSM) */ + +static int dhd_wifi_platform_load(void); + +extern void* wl_cfg80211_get_dhdp(void); + +#ifdef ENABLE_4335BT_WAR +extern int bcm_bt_lock(int cookie); +extern void bcm_bt_unlock(int cookie); +static int lock_cookie_wifi = 'W' | 'i'<<8 | 'F'<<16 | 'i'<<24; /* cookie is "WiFi" */ +#endif /* ENABLE_4335BT_WAR */ + +wifi_adapter_info_t* dhd_wifi_platform_get_adapter(uint32 bus_type, uint32 bus_num, uint32 slot_num) +{ + int i; + + if (dhd_wifi_platdata == NULL) + return NULL; + + for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) { + wifi_adapter_info_t *adapter = &dhd_wifi_platdata->adapters[i]; + if ((adapter->bus_type == -1 || adapter->bus_type == bus_type) && + (adapter->bus_num == -1 || adapter->bus_num == bus_num) && + (adapter->slot_num == -1 || adapter->slot_num == slot_num)) { + DHD_TRACE(("found adapter info '%s'\n", adapter->name)); + return adapter; + } + } + return NULL; +} + +void* wifi_platform_prealloc(wifi_adapter_info_t *adapter, int section, unsigned long size) +{ + void *alloc_ptr = NULL; + struct wifi_platform_data *plat_data; + + if (!adapter || !adapter->wifi_plat_data) + return NULL; + plat_data = adapter->wifi_plat_data; + if (plat_data->mem_prealloc) { + alloc_ptr = plat_data->mem_prealloc(section, size); + if (alloc_ptr) { + DHD_INFO(("success alloc section %d\n", section)); + if (size != 0L) + bzero(alloc_ptr, size); + return alloc_ptr; + } + } + + DHD_ERROR(("%s: failed to alloc static mem section %d\n", __FUNCTION__, section)); + return NULL; +} + +void* wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t *adapter) +{ + struct wifi_platform_data *plat_data; + + if (!adapter || !adapter->wifi_plat_data) + return NULL; + plat_data = adapter->wifi_plat_data; + return plat_data->mem_prealloc; +} + +int wifi_platform_get_irq_number(wifi_adapter_info_t *adapter, unsigned long *irq_flags_ptr) +{ + if (adapter == NULL) + return -1; + if (irq_flags_ptr) + *irq_flags_ptr = adapter->intr_flags; + return adapter->irq_num; +} + +int wifi_platform_set_power(wifi_adapter_info_t *adapter, bool on, unsigned long msec) +{ + int err = 0; + struct wifi_platform_data *plat_data; + + if (!adapter || !adapter->wifi_plat_data) + return -EINVAL; + plat_data = adapter->wifi_plat_data; + + DHD_ERROR(("%s = %d\n", __FUNCTION__, on)); + if (plat_data->set_power) { +#ifdef ENABLE_4335BT_WAR + if (on) { + printk("WiFi: trying to acquire BT lock\n"); + if (bcm_bt_lock(lock_cookie_wifi) != 0) + printk("** WiFi: timeout in acquiring bt lock**\n"); + printk("%s: btlock acquired\n", __FUNCTION__); + } + else { + /* For a exceptional case, release btlock */ + bcm_bt_unlock(lock_cookie_wifi); + } +#endif /* ENABLE_4335BT_WAR */ + + err = plat_data->set_power(on); + } + + if (msec && !err) + OSL_SLEEP(msec); + + if (on && !err) + is_power_on = TRUE; + else + is_power_on = FALSE; + + return err; +} + +int wifi_platform_bus_enumerate(wifi_adapter_info_t *adapter, bool device_present) +{ + int err = 0; + struct wifi_platform_data *plat_data; + + if (!adapter || !adapter->wifi_plat_data) + return -EINVAL; + plat_data = adapter->wifi_plat_data; + + DHD_ERROR(("%s device present %d\n", __FUNCTION__, device_present)); + if (plat_data->set_carddetect) { + err = plat_data->set_carddetect(device_present); + } + return err; + +} + +int wifi_platform_get_mac_addr(wifi_adapter_info_t *adapter, unsigned char *buf) +{ + struct wifi_platform_data *plat_data; + + DHD_ERROR(("%s\n", __FUNCTION__)); + if (!buf || !adapter || !adapter->wifi_plat_data) + return -EINVAL; + plat_data = adapter->wifi_plat_data; + if (plat_data->get_mac_addr) { + return plat_data->get_mac_addr(buf); + } + return -EOPNOTSUPP; +} + +void *wifi_platform_get_country_code(wifi_adapter_info_t *adapter, char *ccode) +{ + /* get_country_code was added after 2.6.39 */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) + struct wifi_platform_data *plat_data; + + if (!ccode || !adapter || !adapter->wifi_plat_data) + return NULL; + plat_data = adapter->wifi_plat_data; + + DHD_TRACE(("%s\n", __FUNCTION__)); + if (plat_data->get_country_code) { + return plat_data->get_country_code(ccode); + } +#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)) */ + + return NULL; +} + +static int wifi_plat_dev_drv_probe(struct platform_device *pdev) +{ + struct resource *resource; + wifi_adapter_info_t *adapter; + + /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan") + * is kept for backward compatibility and supports only 1 adapter + */ + ASSERT(dhd_wifi_platdata != NULL); + ASSERT(dhd_wifi_platdata->num_adapters == 1); + adapter = &dhd_wifi_platdata->adapters[0]; + adapter->wifi_plat_data = (struct wifi_platform_data *)(pdev->dev.platform_data); + + resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcmdhd_wlan_irq"); + if (resource == NULL) + resource = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "bcm4329_wlan_irq"); + if (resource) { + adapter->irq_num = resource->start; + adapter->intr_flags = resource->flags & IRQF_TRIGGER_MASK; + } + + wifi_plat_dev_probe_ret = dhd_wifi_platform_load(); + return wifi_plat_dev_probe_ret; +} + +static int wifi_plat_dev_drv_remove(struct platform_device *pdev) +{ + wifi_adapter_info_t *adapter; + + /* Android style wifi platform data device ("bcmdhd_wlan" or "bcm4329_wlan") + * is kept for backward compatibility and supports only 1 adapter + */ + ASSERT(dhd_wifi_platdata != NULL); + ASSERT(dhd_wifi_platdata->num_adapters == 1); + adapter = &dhd_wifi_platdata->adapters[0]; + if (is_power_on) { + wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY); + wifi_platform_bus_enumerate(adapter, FALSE); + } + + return 0; +} + +static int wifi_plat_dev_drv_suspend(struct platform_device *pdev, pm_message_t state) +{ + DHD_TRACE(("##> %s\n", __FUNCTION__)); +#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) + bcmsdh_oob_intr_set(0); +#endif /* (OOB_INTR_ONLY) */ + return 0; +} + +static int wifi_plat_dev_drv_resume(struct platform_device *pdev) +{ + DHD_TRACE(("##> %s\n", __FUNCTION__)); +#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 39)) && defined(OOB_INTR_ONLY) + if (dhd_os_check_if_up(wl_cfg80211_get_dhdp())) + bcmsdh_oob_intr_set(1); +#endif /* (OOB_INTR_ONLY) */ + return 0; +} + +static struct platform_driver wifi_platform_dev_driver = { + .probe = wifi_plat_dev_drv_probe, + .remove = wifi_plat_dev_drv_remove, + .suspend = wifi_plat_dev_drv_suspend, + .resume = wifi_plat_dev_drv_resume, + .driver = { + .name = WIFI_PLAT_NAME, + } +}; + +static struct platform_driver wifi_platform_dev_driver_legacy = { + .probe = wifi_plat_dev_drv_probe, + .remove = wifi_plat_dev_drv_remove, + .suspend = wifi_plat_dev_drv_suspend, + .resume = wifi_plat_dev_drv_resume, + .driver = { + .name = WIFI_PLAT_NAME2, + } +}; + +static int wifi_platdev_match(struct device *dev, void *data) +{ + char *name = (char*)data; + struct platform_device *pdev = to_platform_device(dev); + + if (strcmp(pdev->name, name) == 0) { + DHD_ERROR(("found wifi platform device %s\n", name)); + return TRUE; + } + + return FALSE; +} + +static int wifi_ctrlfunc_register_drv(void) +{ + int err = 0; + struct device *dev1, *dev2; + wifi_adapter_info_t *adapter; + + dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match); + dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match); + if (!dts_enabled) { + if (dev1 == NULL && dev2 == NULL) { + DHD_ERROR(("no wifi platform data, skip\n")); + return -ENXIO; + } + } + + /* multi-chip support not enabled, build one adapter information for + * DHD (either SDIO, USB or PCIe) + */ + adapter = kzalloc(sizeof(wifi_adapter_info_t), GFP_KERNEL); + adapter->name = "DHD generic adapter"; + adapter->bus_type = -1; + adapter->bus_num = -1; + adapter->slot_num = -1; + adapter->irq_num = -1; + is_power_on = FALSE; + wifi_plat_dev_probe_ret = 0; + dhd_wifi_platdata = kzalloc(sizeof(bcmdhd_wifi_platdata_t), GFP_KERNEL); + dhd_wifi_platdata->num_adapters = 1; + dhd_wifi_platdata->adapters = adapter; + + if (dev1) { + err = platform_driver_register(&wifi_platform_dev_driver); + if (err) { + DHD_ERROR(("%s: failed to register wifi ctrl func driver\n", + __FUNCTION__)); + return err; + } + } + if (dev2) { + err = platform_driver_register(&wifi_platform_dev_driver_legacy); + if (err) { + DHD_ERROR(("%s: failed to register wifi ctrl func legacy driver\n", + __FUNCTION__)); + return err; + } + } + + if (dts_enabled) { + struct resource *resource; + adapter->wifi_plat_data = (void *)&dhd_wlan_control; + resource = &dhd_wlan_resources; + adapter->irq_num = resource->start; + adapter->intr_flags = resource->flags & IRQF_TRIGGER_MASK; + wifi_plat_dev_probe_ret = dhd_wifi_platform_load(); + } + + /* return probe function's return value if registeration succeeded */ + return wifi_plat_dev_probe_ret; +} + +void wifi_ctrlfunc_unregister_drv(void) +{ + struct device *dev1, *dev2; + + dev1 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME, wifi_platdev_match); + dev2 = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_NAME2, wifi_platdev_match); + if (!dts_enabled) + if (dev1 == NULL && dev2 == NULL) + return; + + DHD_ERROR(("unregister wifi platform drivers\n")); + if (dev1) + platform_driver_unregister(&wifi_platform_dev_driver); + if (dev2) + platform_driver_unregister(&wifi_platform_dev_driver_legacy); + if (dts_enabled) { + wifi_adapter_info_t *adapter; + adapter = &dhd_wifi_platdata->adapters[0]; + if (is_power_on) { + wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY); + wifi_platform_bus_enumerate(adapter, FALSE); + } + } + kfree(dhd_wifi_platdata->adapters); + dhd_wifi_platdata->adapters = NULL; + dhd_wifi_platdata->num_adapters = 0; + kfree(dhd_wifi_platdata); + dhd_wifi_platdata = NULL; +} + +static int bcmdhd_wifi_plat_dev_drv_probe(struct platform_device *pdev) +{ + dhd_wifi_platdata = (bcmdhd_wifi_platdata_t *)(pdev->dev.platform_data); + + return dhd_wifi_platform_load(); +} + +static int bcmdhd_wifi_plat_dev_drv_remove(struct platform_device *pdev) +{ + int i; + wifi_adapter_info_t *adapter; + ASSERT(dhd_wifi_platdata != NULL); + + /* power down all adapters */ + for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) { + adapter = &dhd_wifi_platdata->adapters[i]; + wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY); + wifi_platform_bus_enumerate(adapter, FALSE); + } + return 0; +} + +static struct platform_driver dhd_wifi_platform_dev_driver = { + .probe = bcmdhd_wifi_plat_dev_drv_probe, + .remove = bcmdhd_wifi_plat_dev_drv_remove, + .driver = { + .name = WIFI_PLAT_EXT, + } +}; + +int dhd_wifi_platform_register_drv(void) +{ + int err = 0; + struct device *dev; + + /* register Broadcom wifi platform data driver if multi-chip is enabled, + * otherwise use Android style wifi platform data (aka wifi control function) + * if it exists + * + * to support multi-chip DHD, Broadcom wifi platform data device must + * be added in kernel early boot (e.g. board config file). + */ + if (cfg_multichip) { + dev = bus_find_device(&platform_bus_type, NULL, WIFI_PLAT_EXT, wifi_platdev_match); + if (dev == NULL) { + DHD_ERROR(("bcmdhd wifi platform data device not found!!\n")); + return -ENXIO; + } + err = platform_driver_register(&dhd_wifi_platform_dev_driver); + } else { + err = wifi_ctrlfunc_register_drv(); + + /* no wifi ctrl func either, load bus directly and ignore this error */ + if (err) { + if (err == -ENXIO) { + /* wifi ctrl function does not exist */ + err = dhd_wifi_platform_load(); + } else { + /* unregister driver due to initialization failure */ + wifi_ctrlfunc_unregister_drv(); + } + } + } + + return err; +} + +#ifdef BCMPCIE +static int dhd_wifi_platform_load_pcie(void) +{ + int err = 0; + err = dhd_bus_register(); + return err; +} +#else +static int dhd_wifi_platform_load_pcie(void) +{ + return 0; +} +#endif /* BCMPCIE */ + + +void dhd_wifi_platform_unregister_drv(void) +{ + if (cfg_multichip) + platform_driver_unregister(&dhd_wifi_platform_dev_driver); + else + wifi_ctrlfunc_unregister_drv(); +} + +extern int dhd_watchdog_prio; +extern int dhd_dpc_prio; +extern uint dhd_deferred_tx; +#if defined(BCMLXSDMMC) +extern struct semaphore dhd_registration_sem; +#endif + +static int dhd_wifi_platform_load_sdio(void) +{ + int i; + int err = 0; + wifi_adapter_info_t *adapter; + + BCM_REFERENCE(i); + BCM_REFERENCE(adapter); + /* Sanity check on the module parameters + * - Both watchdog and DPC as tasklets are ok + * - If both watchdog and DPC are threads, TX must be deferred + */ + if (!(dhd_watchdog_prio < 0 && dhd_dpc_prio < 0) && + !(dhd_watchdog_prio >= 0 && dhd_dpc_prio >= 0 && dhd_deferred_tx)) + return -EINVAL; + +#if defined(BCMLXSDMMC) + if (dhd_wifi_platdata == NULL) { + DHD_ERROR(("DHD wifi platform data is required for Android build\n")); + return -EINVAL; + } + + sema_init(&dhd_registration_sem, 0); + /* power up all adapters */ + for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) { + bool chip_up = FALSE; + int retry = POWERUP_MAX_RETRY; + struct semaphore dhd_chipup_sem; + + adapter = &dhd_wifi_platdata->adapters[i]; + + DHD_ERROR(("Power-up adapter '%s'\n", adapter->name)); + DHD_INFO((" - irq %d [flags %d], firmware: %s, nvram: %s\n", + adapter->irq_num, adapter->intr_flags, adapter->fw_path, adapter->nv_path)); + DHD_INFO((" - bus type %d, bus num %d, slot num %d\n\n", + adapter->bus_type, adapter->bus_num, adapter->slot_num)); + + do { + sema_init(&dhd_chipup_sem, 0); + err = dhd_bus_reg_sdio_notify(&dhd_chipup_sem); + if (err) { + DHD_ERROR(("%s dhd_bus_reg_sdio_notify fail(%d)\n\n", + __FUNCTION__, err)); + return err; + } + err = wifi_platform_set_power(adapter, TRUE, WIFI_TURNON_DELAY); + if (err) { + /* WL_REG_ON state unknown, Power off forcely */ + wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY); + continue; + } else { + wifi_platform_bus_enumerate(adapter, TRUE); + err = 0; + } + + if (down_timeout(&dhd_chipup_sem, msecs_to_jiffies(POWERUP_WAIT_MS)) == 0) { + dhd_bus_unreg_sdio_notify(); + chip_up = TRUE; + break; + } + + DHD_ERROR(("failed to power up %s, %d retry left\n", adapter->name, retry)); + dhd_bus_unreg_sdio_notify(); + wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY); + wifi_platform_bus_enumerate(adapter, FALSE); + } while (retry--); + + if (!chip_up) { + DHD_ERROR(("failed to power up %s, max retry reached**\n", adapter->name)); + return -ENODEV; + } + + } + + err = dhd_bus_register(); + + if (err) { + DHD_ERROR(("%s: sdio_register_driver failed\n", __FUNCTION__)); + goto fail; + } + + + /* + * Wait till MMC sdio_register_driver callback called and made driver attach. + * It's needed to make sync up exit from dhd insmod and + * Kernel MMC sdio device callback registration + */ + err = down_timeout(&dhd_registration_sem, msecs_to_jiffies(DHD_REGISTRATION_TIMEOUT)); + if (err) { + DHD_ERROR(("%s: sdio_register_driver timeout or error \n", __FUNCTION__)); + dhd_bus_unregister(); + goto fail; + } + + return err; + +fail: + /* power down all adapters */ + for (i = 0; i < dhd_wifi_platdata->num_adapters; i++) { + adapter = &dhd_wifi_platdata->adapters[i]; + wifi_platform_set_power(adapter, FALSE, WIFI_TURNOFF_DELAY); + wifi_platform_bus_enumerate(adapter, FALSE); + } +#else + + /* x86 bring-up PC needs no power-up operations */ + err = dhd_bus_register(); + +#endif + + return err; +} + +static int dhd_wifi_platform_load_usb(void) +{ + return 0; +} + +static int dhd_wifi_platform_load() +{ + int err = 0; + + wl_android_init(); + + if ((err = dhd_wifi_platform_load_usb())) + goto end; + else if ((err = dhd_wifi_platform_load_sdio())) + goto end; + else + err = dhd_wifi_platform_load_pcie(); + +end: + if (err) + wl_android_exit(); + else + wl_android_post_init(); + + return err; +} |