diff options
Diffstat (limited to 'drivers/net/wireless/bcmdhd_1363/dhd_pcie_linux.c')
| -rw-r--r-- | drivers/net/wireless/bcmdhd_1363/dhd_pcie_linux.c | 1583 |
1 files changed, 1583 insertions, 0 deletions
diff --git a/drivers/net/wireless/bcmdhd_1363/dhd_pcie_linux.c b/drivers/net/wireless/bcmdhd_1363/dhd_pcie_linux.c new file mode 100644 index 000000000000..aa363b941d37 --- /dev/null +++ b/drivers/net/wireless/bcmdhd_1363/dhd_pcie_linux.c @@ -0,0 +1,1583 @@ +/* + * Linux DHD Bus Module for PCIE + * + * Copyright (C) 1999-2017, 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. + * + * + * <<Broadcom-WL-IPTag/Open:>> + * + * $Id: dhd_pcie_linux.c 650724 2016-07-22 08:41:52Z $ + */ + + +/* include files */ +#include <typedefs.h> +#include <bcmutils.h> +#include <bcmdevs.h> +#include <siutils.h> +#include <hndsoc.h> +#include <hndpmu.h> +#include <sbchipc.h> +#if defined(DHD_DEBUG) +#include <hnd_armtrap.h> +#include <hnd_cons.h> +#endif /* defined(DHD_DEBUG) */ +#include <dngl_stats.h> +#include <pcie_core.h> +#include <dhd.h> +#include <dhd_bus.h> +#include <dhd_proto.h> +#include <dhd_dbg.h> +#include <dhdioctl.h> +#include <bcmmsgbuf.h> +#include <pcicfg.h> +#include <dhd_pcie.h> +#include <dhd_linux.h> +#ifdef CONFIG_ARCH_MSM +#ifdef CONFIG_PCI_MSM +#include <linux/msm_pcie.h> +#else +#include <mach/msm_pcie.h> +#endif /* CONFIG_PCI_MSM */ +#endif /* CONFIG_ARCH_MSM */ + +#define PCI_CFG_RETRY 10 +#define OS_HANDLE_MAGIC 0x1234abcd /* Magic # to recognize osh */ +#define BCM_MEM_FILENAME_LEN 24 /* Mem. filename length */ + +#define OSL_PKTTAG_CLEAR(p) \ +do { \ + struct sk_buff *s = (struct sk_buff *)(p); \ + ASSERT(OSL_PKTTAG_SZ == 32); \ + *(uint32 *)(&s->cb[0]) = 0; *(uint32 *)(&s->cb[4]) = 0; \ + *(uint32 *)(&s->cb[8]) = 0; *(uint32 *)(&s->cb[12]) = 0; \ + *(uint32 *)(&s->cb[16]) = 0; *(uint32 *)(&s->cb[20]) = 0; \ + *(uint32 *)(&s->cb[24]) = 0; *(uint32 *)(&s->cb[28]) = 0; \ +} while (0) + + +/* user defined data structures */ + +typedef struct dhd_pc_res { + uint32 bar0_size; + void* bar0_addr; + uint32 bar1_size; + void* bar1_addr; +} pci_config_res, *pPci_config_res; + +typedef bool (*dhdpcie_cb_fn_t)(void *); + +typedef struct dhdpcie_info +{ + dhd_bus_t *bus; + osl_t *osh; + struct pci_dev *dev; /* pci device handle */ + volatile char *regs; /* pci device memory va */ + volatile char *tcm; /* pci device memory va */ + uint32 tcm_size; /* pci device memory size */ + struct pcos_info *pcos_info; + uint16 last_intrstatus; /* to cache intrstatus */ + int irq; + char pciname[32]; + struct pci_saved_state* default_state; + struct pci_saved_state* state; +#ifdef BCMPCIE_OOB_HOST_WAKE + void *os_cxt; /* Pointer to per-OS private data */ +#endif /* BCMPCIE_OOB_HOST_WAKE */ +} dhdpcie_info_t; + + +struct pcos_info { + dhdpcie_info_t *pc; + spinlock_t lock; + wait_queue_head_t intr_wait_queue; + struct timer_list tuning_timer; + int tuning_timer_exp; + atomic_t timer_enab; + struct tasklet_struct tuning_tasklet; +}; + +#ifdef BCMPCIE_OOB_HOST_WAKE +typedef struct dhdpcie_os_info { + int oob_irq_num; /* valid when hardware or software oob in use */ + unsigned long oob_irq_flags; /* valid when hardware or software oob in use */ + bool oob_irq_registered; + bool oob_irq_enabled; + bool oob_irq_wake_enabled; + spinlock_t oob_irq_spinlock; + void *dev; /* handle to the underlying device */ +} dhdpcie_os_info_t; +#endif /* BCMPCIE_OOB_HOST_WAKE */ + +/* function declarations */ +static int __devinit +dhdpcie_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent); +static void __devexit +dhdpcie_pci_remove(struct pci_dev *pdev); +static int dhdpcie_init(struct pci_dev *pdev); +static irqreturn_t dhdpcie_isr(int irq, void *arg); +/* OS Routine functions for PCI suspend/resume */ + +static int dhdpcie_set_suspend_resume(struct pci_dev *dev, bool state); +static int dhdpcie_resume_host_dev(dhd_bus_t *bus); +static int dhdpcie_suspend_host_dev(dhd_bus_t *bus); +static int dhdpcie_resume_dev(struct pci_dev *dev); +static int dhdpcie_suspend_dev(struct pci_dev *dev); +#ifdef DHD_PCIE_RUNTIMEPM +static int dhdpcie_pm_suspend(struct device *dev); +static int dhdpcie_pm_prepare(struct device *dev); +static int dhdpcie_pm_resume(struct device *dev); +static void dhdpcie_pm_complete(struct device *dev); +#else +static int dhdpcie_pci_suspend(struct pci_dev *dev, pm_message_t state); +static int dhdpcie_pci_resume(struct pci_dev *dev); +#endif /* DHD_PCIE_RUNTIMEPM */ +static struct pci_device_id dhdpcie_pci_devid[] __devinitdata = { + { vendor: 0x14e4, + device: PCI_ANY_ID, + subvendor: PCI_ANY_ID, + subdevice: PCI_ANY_ID, + class: PCI_CLASS_NETWORK_OTHER << 8, + class_mask: 0xffff00, + driver_data: 0, + }, + { 0, } +}; +MODULE_DEVICE_TABLE(pci, dhdpcie_pci_devid); + +/* Power Management Hooks */ +#ifdef DHD_PCIE_RUNTIMEPM +static const struct dev_pm_ops dhd_pcie_pm_ops = { + .prepare = dhdpcie_pm_prepare, + .suspend = dhdpcie_pm_suspend, + .resume = dhdpcie_pm_resume, + .complete = dhdpcie_pm_complete, +}; +#endif /* DHD_PCIE_RUNTIMEPM */ + +static struct pci_driver dhdpcie_driver = { + node: {}, +#ifndef BCMDHDX + name: "pcieh", +#else + name: "pciehx", +#endif /* BCMDHDX */ + id_table: dhdpcie_pci_devid, + probe: dhdpcie_pci_probe, + remove: dhdpcie_pci_remove, +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)) + save_state: NULL, +#endif +#ifdef DHD_PCIE_RUNTIMEPM + .driver.pm = &dhd_pcie_pm_ops, +#else + suspend: dhdpcie_pci_suspend, + resume: dhdpcie_pci_resume, +#endif /* DHD_PCIE_RUNTIMEPM */ +}; + +int dhdpcie_init_succeeded = FALSE; + +#ifdef DHD_PCIE_RUNTIMEPM +static int dhdpcie_pm_suspend(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + return dhdpcie_set_suspend_resume(pdev, TRUE); +} + +static int dhdpcie_pm_prepare(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + dhdpcie_info_t *pch = pci_get_drvdata(pdev); + dhd_bus_t *bus = NULL; + + if (pch) { + bus = pch->bus; + DHD_DISABLE_RUNTIME_PM(bus->dhd); + } + + return 0; +} + +static int dhdpcie_pm_resume(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + return dhdpcie_set_suspend_resume(pdev, FALSE); +} + +static void dhdpcie_pm_complete(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + dhdpcie_info_t *pch = pci_get_drvdata(pdev); + dhd_bus_t *bus = NULL; + + if (pch) { + bus = pch->bus; + DHD_ENABLE_RUNTIME_PM(bus->dhd); + } + + return; +} +#else +static int dhdpcie_pci_suspend(struct pci_dev * pdev, pm_message_t state) +{ + BCM_REFERENCE(state); + return dhdpcie_set_suspend_resume(pdev, TRUE); +} + +static int dhdpcie_pci_resume(struct pci_dev *pdev) +{ + return dhdpcie_set_suspend_resume(pdev, FALSE); +} + +#endif /* DHD_PCIE_RUNTIMEPM */ + +static int dhdpcie_set_suspend_resume(struct pci_dev *pdev, bool state) +{ + int ret = 0; + dhdpcie_info_t *pch = pci_get_drvdata(pdev); + dhd_bus_t *bus = NULL; + + if (pch) { + bus = pch->bus; + } + +#ifdef DHD_PCIE_RUNTIMEPM + if (bus && !bus->dhd->dongle_reset) { + /* if wakelock is held during suspend, return failed */ + if (state == TRUE && dhd_os_check_wakelock_all(bus->dhd)) { + return -EBUSY; + } + + mutex_lock(&bus->pm_lock); + } +#endif /* DHD_PCIE_RUNTIMEPM */ + + /* When firmware is not loaded do the PCI bus */ + /* suspend/resume only */ + if (bus && (bus->dhd->busstate == DHD_BUS_DOWN) && + !bus->dhd->dongle_reset) { + ret = dhdpcie_pci_suspend_resume(bus, state); +#ifdef DHD_PCIE_RUNTIMEPM + mutex_unlock(&bus->pm_lock); +#endif /* DHD_PCIE_RUNTIMEPM */ + return ret; + } + + if (bus && ((bus->dhd->busstate == DHD_BUS_SUSPEND)|| + (bus->dhd->busstate == DHD_BUS_DATA)) && + (bus->suspended != state)) { + ret = dhdpcie_bus_suspend(bus, state); + } + +#ifdef DHD_PCIE_RUNTIMEPM + if (bus && !bus->dhd->dongle_reset) { + mutex_unlock(&bus->pm_lock); + } +#endif /* DHD_PCIE_RUNTIMEPM */ + return ret; +} + +extern void dhd_dpc_tasklet_kill(dhd_pub_t *dhdp); + +static int dhdpcie_suspend_dev(struct pci_dev *dev) +{ + int ret; +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + dhdpcie_info_t *pch = pci_get_drvdata(dev); + dhd_bus_t *bus = pch->bus; + + if (bus->is_linkdown) { + DHD_ERROR(("%s: PCIe link is down\n", __FUNCTION__)); + return BCME_ERROR; + } +#endif /* OEM_ANDROID && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + DHD_TRACE_HW4(("%s: Enter\n", __FUNCTION__)); + disable_irq(dev->irq); + dhd_dpc_tasklet_kill(bus->dhd); +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + bus->pci_d3hot_done = 1; +#endif /* OEM_ANDROID && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + pci_save_state(dev); +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + pch->state = pci_store_saved_state(dev); +#endif /* OEM_ANDROID && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + pci_enable_wake(dev, PCI_D0, TRUE); + if (pci_is_enabled(dev)) { + pci_disable_device(dev); + } + ret = pci_set_power_state(dev, PCI_D3hot); + if (ret) { + DHD_ERROR(("%s: pci_set_power_state error %d\n", + __FUNCTION__, ret)); + } + return ret; +} + +static int dhdpcie_resume_dev(struct pci_dev *dev) +{ + int err = 0; +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + dhdpcie_info_t *pch = pci_get_drvdata(dev); + dhd_bus_t *bus = pch->bus; + pci_load_and_free_saved_state(dev, &pch->state); +#endif /* OEM_ANDROID && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + DHD_TRACE_HW4(("%s: Enter\n", __FUNCTION__)); +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + bus->pci_d3hot_done = 0; +#endif /* OEM_ANDROID && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + pci_restore_state(dev); + err = pci_enable_device(dev); + if (err) { + printf("%s:pci_enable_device error %d \n", __FUNCTION__, err); + goto out; + } + pci_set_master(dev); + err = pci_set_power_state(dev, PCI_D0); + if (err) { + printf("%s:pci_set_power_state error %d \n", __FUNCTION__, err); + goto out; + } + +out: + enable_irq(dev->irq); + return err; +} + +static int dhdpcie_resume_host_dev(dhd_bus_t *bus) +{ + int bcmerror = 0; +#ifdef USE_EXYNOS_PCIE_RC_PMPATCH + bcmerror = exynos_pcie_pm_resume(SAMSUNG_PCIE_CH_NUM); +#endif /* USE_EXYNOS_PCIE_RC_PMPATCH */ +#ifdef CONFIG_ARCH_MSM + bcmerror = dhdpcie_start_host_pcieclock(bus); +#endif /* CONFIG_ARCH_MSM */ + if (bcmerror < 0) { + DHD_ERROR(("%s: PCIe RC resume failed!!! (%d)\n", + __FUNCTION__, bcmerror)); + bus->is_linkdown = 1; +#ifdef CONFIG_ARCH_MSM + bus->no_cfg_restore = 1; +#endif /* CONFIG_ARCH_MSM */ + } + + return bcmerror; +} + +static int dhdpcie_suspend_host_dev(dhd_bus_t *bus) +{ + int bcmerror = 0; +#ifdef USE_EXYNOS_PCIE_RC_PMPATCH + struct pci_dev *rc_pci_dev; + rc_pci_dev = pci_get_device(0x144d, SAMSUNG_PCIE_DEVICE_ID, NULL); + if (rc_pci_dev) { + pci_save_state(rc_pci_dev); + } + exynos_pcie_pm_suspend(SAMSUNG_PCIE_CH_NUM); +#endif /* USE_EXYNOS_PCIE_RC_PMPATCH */ +#ifdef CONFIG_ARCH_MSM + bcmerror = dhdpcie_stop_host_pcieclock(bus); +#endif /* CONFIG_ARCH_MSM */ + return bcmerror; +} + +int dhdpcie_pci_suspend_resume(dhd_bus_t *bus, bool state) +{ + int rc; + + struct pci_dev *dev = bus->dev; + + if (state) { + if (bus->is_linkdown) { + DHD_ERROR(("%s: PCIe link was down\n", __FUNCTION__)); + return BCME_ERROR; + } +#ifndef BCMPCIE_OOB_HOST_WAKE + dhdpcie_pme_active(bus->osh, state); +#endif /* !BCMPCIE_OOB_HOST_WAKE */ + rc = dhdpcie_suspend_dev(dev); + if (!rc) { + dhdpcie_suspend_host_dev(bus); + } + } else { + dhdpcie_resume_host_dev(bus); + rc = dhdpcie_resume_dev(dev); +#ifndef BCMPCIE_OOB_HOST_WAKE + dhdpcie_pme_active(bus->osh, state); +#endif /* !BCMPCIE_OOB_HOST_WAKE */ +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) + if (bus->is_linkdown) { + bus->dhd->hang_reason = HANG_REASON_PCIE_RC_LINK_UP_FAIL; + dhd_os_send_hang_message(bus->dhd); + } +#endif + } + return rc; +} + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)) +static int dhdpcie_device_scan(struct device *dev, void *data) +{ + struct pci_dev *pcidev; + int *cnt = data; + + pcidev = container_of(dev, struct pci_dev, dev); + if (pcidev->vendor != 0x14e4) + return 0; + + DHD_INFO(("Found Broadcom PCI device 0x%04x\n", pcidev->device)); + *cnt += 1; + if (pcidev->driver && strcmp(pcidev->driver->name, dhdpcie_driver.name)) + DHD_ERROR(("Broadcom PCI Device 0x%04x has allocated with driver %s\n", + pcidev->device, pcidev->driver->name)); + + return 0; +} +#endif /* LINUX_VERSION >= 2.6.0 */ + +int +dhdpcie_bus_register(void) +{ + int error = 0; + + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)) + if (!(error = pci_module_init(&dhdpcie_driver))) + return 0; + + DHD_ERROR(("%s: pci_module_init failed 0x%x\n", __FUNCTION__, error)); +#else + if (!(error = pci_register_driver(&dhdpcie_driver))) { + bus_for_each_dev(dhdpcie_driver.driver.bus, NULL, &error, dhdpcie_device_scan); + if (!error) { + DHD_ERROR(("No Broadcom PCI device enumerated!\n")); + } else if (!dhdpcie_init_succeeded) { + DHD_ERROR(("%s: dhdpcie initialize failed.\n", __FUNCTION__)); + } else { + return 0; + } + + pci_unregister_driver(&dhdpcie_driver); + error = BCME_ERROR; + } +#endif /* LINUX_VERSION < 2.6.0 */ + + return error; +} + + +void +dhdpcie_bus_unregister(void) +{ + pci_unregister_driver(&dhdpcie_driver); +} + +int __devinit +dhdpcie_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ +#ifndef MULTI_CHIP_SUPPORT + /* Don't enumerate more than one device */ + if (dhdpcie_init_succeeded) { + DHD_TRACE(("%s: PCIe Enumeration is already done.\n", + __func__)); + return -ENODEV; + } +#endif /* MULTI_CHIP_SUPPORT */ + + if (dhdpcie_chipmatch (pdev->vendor, pdev->device)) { + DHD_ERROR(("%s: chipmatch failed!!\n", __FUNCTION__)); + return -ENODEV; + } + printf("PCI_PROBE: bus %X, slot %X,vendor %X, device %X" + "(good PCI location)\n", pdev->bus->number, + PCI_SLOT(pdev->devfn), pdev->vendor, pdev->device); + + if (dhdpcie_init (pdev)) { + DHD_ERROR(("%s: PCIe Enumeration failed\n", __FUNCTION__)); + return -ENODEV; + } + +#ifdef BCMPCIE_DISABLE_ASYNC_SUSPEND + /* disable async suspend */ + device_disable_async_suspend(&pdev->dev); +#endif /* BCMPCIE_DISABLE_ASYNC_SUSPEND */ + + DHD_TRACE(("%s: PCIe Enumeration done!!\n", __FUNCTION__)); + return 0; +} + +int +dhdpcie_detach(dhdpcie_info_t *pch) +{ + if (pch) { +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + if (!dhd_download_fw_on_driverload) { + pci_load_and_free_saved_state(pch->dev, &pch->default_state); + } +#endif /* OEM_ANDROID && LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + MFREE(pch->osh, pch, sizeof(dhdpcie_info_t)); + } + return 0; +} + + +void __devexit +dhdpcie_pci_remove(struct pci_dev *pdev) +{ + osl_t *osh = NULL; + dhdpcie_info_t *pch = NULL; + dhd_bus_t *bus = NULL; + + DHD_TRACE(("%s Enter\n", __FUNCTION__)); + pch = pci_get_drvdata(pdev); + bus = pch->bus; + osh = pch->osh; + +#ifdef SUPPORT_LINKDOWN_RECOVERY + if (bus) { +#ifdef CONFIG_ARCH_MSM + msm_pcie_deregister_event(&bus->pcie_event); +#endif /* CONFIG_ARCH_MSM */ +#ifdef EXYNOS_PCIE_LINKDOWN_RECOVERY +#ifdef CONFIG_SOC_EXYNOS8890 + exynos_pcie_deregister_event(&bus->pcie_event); +#endif /* CONFIG_SOC_EXYNOS8890 */ +#endif /* EXYNOS_PCIE_LINKDOWN_RECOVERY */ + } +#endif /* SUPPORT_LINKDOWN_RECOVERY */ + dhdpcie_bus_release(bus); + pci_disable_device(pdev); +#ifdef BCMPCIE_OOB_HOST_WAKE + /* pcie os info detach */ + MFREE(osh, pch->os_cxt, sizeof(dhdpcie_os_info_t)); +#endif /* BCMPCIE_OOB_HOST_WAKE */ + /* pcie info detach */ + dhdpcie_detach(pch); + /* osl detach */ + osl_detach(osh); + + dhdpcie_init_succeeded = FALSE; + + DHD_TRACE(("%s Exit\n", __FUNCTION__)); + + return; +} + +/* Free Linux irq */ +int +dhdpcie_request_irq(dhdpcie_info_t *dhdpcie_info) +{ + dhd_bus_t *bus = dhdpcie_info->bus; + struct pci_dev *pdev = dhdpcie_info->bus->dev; + + if (!bus->irq_registered) { + snprintf(dhdpcie_info->pciname, sizeof(dhdpcie_info->pciname), + "dhdpcie:%s", pci_name(pdev)); +#ifndef PCIE_INTX_SUPPORT + pci_enable_msi(pdev); +#endif /* !PCIE_INTX_SUPPORT */ + if (request_irq(pdev->irq, dhdpcie_isr, IRQF_SHARED, + dhdpcie_info->pciname, bus) < 0) { + DHD_ERROR(("%s: request_irq() failed\n", __FUNCTION__)); + return -1; + } else { + bus->irq_registered = TRUE; + } + } else { + DHD_ERROR(("%s: PCI IRQ is already registered\n", __FUNCTION__)); + } + + DHD_TRACE(("%s %s\n", __FUNCTION__, dhdpcie_info->pciname)); + + + return 0; /* SUCCESS */ +} + +#ifdef CONFIG_PHYS_ADDR_T_64BIT +#define PRINTF_RESOURCE "0x%016llx" +#else +#define PRINTF_RESOURCE "0x%08x" +#endif + +/* + +Name: osl_pci_get_resource + +Parametrs: + +1: struct pci_dev *pdev -- pci device structure +2: pci_res -- structure containing pci configuration space values + + +Return value: + +int - Status (TRUE or FALSE) + +Description: +Access PCI configuration space, retrieve PCI allocated resources , updates in resource structure. + + */ +int dhdpcie_get_resource(dhdpcie_info_t *dhdpcie_info) +{ + phys_addr_t bar0_addr, bar1_addr; + ulong bar1_size; + struct pci_dev *pdev = NULL; + pdev = dhdpcie_info->dev; + do { + if (pci_enable_device(pdev)) { + printf("%s: Cannot enable PCI device\n", __FUNCTION__); + break; + } + pci_set_master(pdev); + bar0_addr = pci_resource_start(pdev, 0); /* Bar-0 mapped address */ + bar1_addr = pci_resource_start(pdev, 2); /* Bar-1 mapped address */ + + /* read Bar-1 mapped memory range */ + bar1_size = pci_resource_len(pdev, 2); + + if ((bar1_size == 0) || (bar1_addr == 0)) { + printf("%s: BAR1 Not enabled for this device size(%ld)," + " addr(0x"PRINTF_RESOURCE")\n", + __FUNCTION__, bar1_size, bar1_addr); + goto err; + } + + dhdpcie_info->regs = (volatile char *) REG_MAP(bar0_addr, DONGLE_REG_MAP_SIZE); + dhdpcie_info->tcm = (volatile char *) REG_MAP(bar1_addr, DONGLE_TCM_MAP_SIZE); + dhdpcie_info->tcm_size = DONGLE_TCM_MAP_SIZE; + + if (!dhdpcie_info->regs || !dhdpcie_info->tcm) { + DHD_ERROR(("%s:ioremap() failed\n", __FUNCTION__)); + break; + } + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + if (!dhd_download_fw_on_driverload) { + /* Backup PCIe configuration so as to use Wi-Fi on/off process + * in case of built in driver + */ + pci_save_state(pdev); + dhdpcie_info->default_state = pci_store_saved_state(pdev); + + if (dhdpcie_info->default_state == NULL) { + DHD_ERROR(("%s pci_store_saved_state returns NULL\n", + __FUNCTION__)); + REG_UNMAP(dhdpcie_info->regs); + REG_UNMAP(dhdpcie_info->tcm); + pci_disable_device(pdev); + break; + } + } +#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + + DHD_TRACE(("%s:Phys addr : reg space = %p base addr 0x"PRINTF_RESOURCE" \n", + __FUNCTION__, dhdpcie_info->regs, bar0_addr)); + DHD_TRACE(("%s:Phys addr : tcm_space = %p base addr 0x"PRINTF_RESOURCE" \n", + __FUNCTION__, dhdpcie_info->tcm, bar1_addr)); + + return 0; /* SUCCESS */ + } while (0); +err: + return -1; /* FAILURE */ +} + +int dhdpcie_scan_resource(dhdpcie_info_t *dhdpcie_info) +{ + + DHD_TRACE(("%s: ENTER\n", __FUNCTION__)); + + do { + /* define it here only!! */ + if (dhdpcie_get_resource (dhdpcie_info)) { + DHD_ERROR(("%s: Failed to get PCI resources\n", __FUNCTION__)); + break; + } + DHD_TRACE(("%s:Exit - SUCCESS \n", + __FUNCTION__)); + + return 0; /* SUCCESS */ + + } while (0); + + DHD_TRACE(("%s:Exit - FAILURE \n", __FUNCTION__)); + + return -1; /* FAILURE */ + +} + +#ifdef SUPPORT_LINKDOWN_RECOVERY +#if defined(CONFIG_ARCH_MSM) || (defined(EXYNOS_PCIE_LINKDOWN_RECOVERY) && \ + defined(CONFIG_SOC_EXYNOS8890)) +void dhdpcie_linkdown_cb(struct_pcie_notify *noti) +{ + struct pci_dev *pdev = (struct pci_dev *)noti->user; + dhdpcie_info_t *pch = NULL; + + if (pdev) { + pch = pci_get_drvdata(pdev); + if (pch) { + dhd_bus_t *bus = pch->bus; + if (bus) { + dhd_pub_t *dhd = bus->dhd; + if (dhd) { + DHD_ERROR(("%s: Event HANG send up " + "due to PCIe linkdown\n", + __FUNCTION__)); +#ifdef CONFIG_ARCH_MSM + bus->no_cfg_restore = 1; +#endif /* CONFIG_ARCH_MSM */ + bus->is_linkdown = 1; + DHD_OS_WAKE_LOCK(dhd); + dhd->hang_reason = HANG_REASON_PCIE_LINK_DOWN; + dhd_os_send_hang_message(dhd); + } + } + } + } + +} +#endif /* CONFIG_ARCH_MSM || (EXYNOS_PCIE_LINKDOWN_RECOVERY && CONFIG_SOC_EXYNOS8890) */ +#endif /* EXYNOS_PCIE_LINKDOWN_RECOVERY */ + +int dhdpcie_init(struct pci_dev *pdev) +{ + + osl_t *osh = NULL; + dhd_bus_t *bus = NULL; + dhdpcie_info_t *dhdpcie_info = NULL; + wifi_adapter_info_t *adapter = NULL; +#ifdef BCMPCIE_OOB_HOST_WAKE + dhdpcie_os_info_t *dhdpcie_osinfo = NULL; +#endif /* BCMPCIE_OOB_HOST_WAKE */ + + do { + /* osl attach */ + if (!(osh = osl_attach(pdev, PCI_BUS, FALSE))) { + DHD_ERROR(("%s: osl_attach failed\n", __FUNCTION__)); + break; + } + + /* initialize static buffer */ + adapter = dhd_wifi_platform_get_adapter(PCI_BUS, pdev->bus->number, + PCI_SLOT(pdev->devfn)); + if (adapter != NULL) + DHD_ERROR(("%s: found adapter info '%s'\n", __FUNCTION__, adapter->name)); + else + DHD_ERROR(("%s: can't find adapter info for this chip\n", __FUNCTION__)); + osl_static_mem_init(osh, adapter); + + /* Set ACP coherence flag */ + if (OSL_ACP_WAR_ENAB() || OSL_ARCH_IS_COHERENT()) + osl_flag_set(osh, OSL_ACP_COHERENCE); + + /* allocate linux spcific pcie structure here */ + if (!(dhdpcie_info = MALLOC(osh, sizeof(dhdpcie_info_t)))) { + DHD_ERROR(("%s: MALLOC of dhd_bus_t failed\n", __FUNCTION__)); + break; + } + bzero(dhdpcie_info, sizeof(dhdpcie_info_t)); + dhdpcie_info->osh = osh; + dhdpcie_info->dev = pdev; + +#ifdef BCMPCIE_OOB_HOST_WAKE + /* allocate OS speicific structure */ + dhdpcie_osinfo = MALLOC(osh, sizeof(dhdpcie_os_info_t)); + if (dhdpcie_osinfo == NULL) { + DHD_ERROR(("%s: MALLOC of dhdpcie_os_info_t failed\n", + __FUNCTION__)); + break; + } + bzero(dhdpcie_osinfo, sizeof(dhdpcie_os_info_t)); + dhdpcie_info->os_cxt = (void *)dhdpcie_osinfo; + + /* Initialize host wake IRQ */ + spin_lock_init(&dhdpcie_osinfo->oob_irq_spinlock); + /* Get customer specific host wake IRQ parametres: IRQ number as IRQ type */ + dhdpcie_osinfo->oob_irq_num = wifi_platform_get_irq_number(adapter, + &dhdpcie_osinfo->oob_irq_flags); + if (dhdpcie_osinfo->oob_irq_num < 0) { + DHD_ERROR(("%s: Host OOB irq is not defined\n", __FUNCTION__)); + } +#endif /* BCMPCIE_OOB_HOST_WAKE */ + + /* Find the PCI resources, verify the */ + /* vendor and device ID, map BAR regions and irq, update in structures */ + if (dhdpcie_scan_resource(dhdpcie_info)) { + DHD_ERROR(("%s: dhd_Scan_PCI_Res failed\n", __FUNCTION__)); + + break; + } + + /* Bus initialization */ + bus = dhdpcie_bus_attach(osh, dhdpcie_info->regs, dhdpcie_info->tcm, pdev); + if (!bus) { + DHD_ERROR(("%s:dhdpcie_bus_attach() failed\n", __FUNCTION__)); + break; + } + + dhdpcie_info->bus = bus; + bus->is_linkdown = 0; + bus->pci_d3hot_done = 0; +#ifdef DONGLE_ENABLE_ISOLATION + bus->dhd->dongle_isolation = TRUE; +#endif /* DONGLE_ENABLE_ISOLATION */ +#ifdef SUPPORT_LINKDOWN_RECOVERY +#ifdef CONFIG_ARCH_MSM + bus->pcie_event.events = MSM_PCIE_EVENT_LINKDOWN; + bus->pcie_event.user = pdev; + bus->pcie_event.mode = MSM_PCIE_TRIGGER_CALLBACK; + bus->pcie_event.callback = dhdpcie_linkdown_cb; + bus->pcie_event.options = MSM_PCIE_CONFIG_NO_RECOVERY; + msm_pcie_register_event(&bus->pcie_event); + bus->no_cfg_restore = 0; +#endif /* CONFIG_ARCH_MSM */ +#ifdef EXYNOS_PCIE_LINKDOWN_RECOVERY +#ifdef CONFIG_SOC_EXYNOS8890 + bus->pcie_event.events = EXYNOS_PCIE_EVENT_LINKDOWN; + bus->pcie_event.user = pdev; + bus->pcie_event.mode = EXYNOS_PCIE_TRIGGER_CALLBACK; + bus->pcie_event.callback = dhdpcie_linkdown_cb; + exynos_pcie_register_event(&bus->pcie_event); +#endif /* CONFIG_SOC_EXYNOS8890 */ +#endif /* EXYNOS_PCIE_LINKDOWN_RECOVERY */ +#endif /* SUPPORT_LINKDOWN_RECOVERY */ + + if (bus->intr) { + /* Register interrupt callback, but mask it (not operational yet). */ + DHD_INTR(("%s: Registering and masking interrupts\n", __FUNCTION__)); + dhdpcie_bus_intr_disable(bus); + + if (dhdpcie_request_irq(dhdpcie_info)) { + DHD_ERROR(("%s: request_irq() failed\n", __FUNCTION__)); + break; + } + } else { + bus->pollrate = 1; + DHD_INFO(("%s: PCIe interrupt function is NOT registered " + "due to polling mode\n", __FUNCTION__)); + } + +#if defined(BCM_REQUEST_FW) + if (dhd_bus_download_firmware(bus, osh, NULL, NULL) < 0) { + DHD_ERROR(("%s: failed to download firmware\n", __FUNCTION__)); + } + bus->nv_path = NULL; + bus->fw_path = NULL; +#endif /* BCM_REQUEST_FW */ + + /* set private data for pci_dev */ + pci_set_drvdata(pdev, dhdpcie_info); + + if (dhd_download_fw_on_driverload) { + if (dhd_bus_start(bus->dhd)) { + DHD_ERROR(("%s: dhd_bud_start() failed\n", __FUNCTION__)); + if (!allow_delay_fwdl) + break; + } + } else { + /* Set ramdom MAC address during boot time */ + get_random_bytes(&bus->dhd->mac.octet[3], 3); + /* Adding BRCM OUI */ + bus->dhd->mac.octet[0] = 0; + bus->dhd->mac.octet[1] = 0x90; + bus->dhd->mac.octet[2] = 0x4C; + } + + /* Attach to the OS network interface */ + DHD_TRACE(("%s(): Calling dhd_register_if() \n", __FUNCTION__)); + if (dhd_register_if(bus->dhd, 0, TRUE)) { + DHD_ERROR(("%s(): ERROR.. dhd_register_if() failed\n", __FUNCTION__)); + break; + } + + dhdpcie_init_succeeded = TRUE; + + DHD_TRACE(("%s:Exit - SUCCESS \n", __FUNCTION__)); + return 0; /* return SUCCESS */ + + } while (0); + /* reverse the initialization in order in case of error */ + + if (bus) + dhdpcie_bus_release(bus); + +#ifdef BCMPCIE_OOB_HOST_WAKE + if (dhdpcie_osinfo) { + MFREE(osh, dhdpcie_osinfo, sizeof(dhdpcie_os_info_t)); + } +#endif /* BCMPCIE_OOB_HOST_WAKE */ + + if (dhdpcie_info) + dhdpcie_detach(dhdpcie_info); + pci_disable_device(pdev); + if (osh) + osl_detach(osh); + + dhdpcie_init_succeeded = FALSE; + + DHD_TRACE(("%s:Exit - FAILURE \n", __FUNCTION__)); + + return -1; /* return FAILURE */ +} + +/* Free Linux irq */ +void +dhdpcie_free_irq(dhd_bus_t *bus) +{ + struct pci_dev *pdev = NULL; + + DHD_TRACE(("%s: freeing up the IRQ\n", __FUNCTION__)); + if (!bus) { + return; + } + + if (bus->irq_registered) { + pdev = bus->dev; + free_irq(pdev->irq, bus); +#ifndef PCIE_INTX_SUPPORT + pci_disable_msi(pdev); +#endif /* !PCIE_INTX_SUPPORT */ + bus->irq_registered = FALSE; + } else { + DHD_ERROR(("%s: PCIe IRQ is not registered\n", __FUNCTION__)); + } + DHD_TRACE(("%s: Exit\n", __FUNCTION__)); + return; +} + +/* + +Name: dhdpcie_isr + +Parametrs: + +1: IN int irq -- interrupt vector +2: IN void *arg -- handle to private data structure + +Return value: + +Status (TRUE or FALSE) + +Description: +Interrupt Service routine checks for the status register, +disable interrupt and queue DPC if mail box interrupts are raised. +*/ + + +irqreturn_t +dhdpcie_isr(int irq, void *arg) +{ + dhd_bus_t *bus = (dhd_bus_t*)arg; + if (dhdpcie_bus_isr(bus)) + return TRUE; + else + return FALSE; +} + +int +dhdpcie_start_host_pcieclock(dhd_bus_t *bus) +{ + int ret = 0; +#ifdef CONFIG_ARCH_MSM +#ifdef SUPPORT_LINKDOWN_RECOVERY + int options = 0; +#endif /* SUPPORT_LINKDOWN_RECOVERY */ +#endif /* CONFIG_ARCH_MSM */ + DHD_TRACE(("%s Enter:\n", __FUNCTION__)); + + if (bus == NULL) { + return BCME_ERROR; + } + + if (bus->dev == NULL) { + return BCME_ERROR; + } + +#ifdef CONFIG_ARCH_MSM +#ifdef SUPPORT_LINKDOWN_RECOVERY + if (bus->no_cfg_restore) { + options = MSM_PCIE_CONFIG_NO_CFG_RESTORE; + } + ret = msm_pcie_pm_control(MSM_PCIE_RESUME, bus->dev->bus->number, + bus->dev, NULL, options); + if (bus->no_cfg_restore && !ret) { + msm_pcie_recover_config(bus->dev); + bus->no_cfg_restore = 0; + } +#else + ret = msm_pcie_pm_control(MSM_PCIE_RESUME, bus->dev->bus->number, + bus->dev, NULL, 0); +#endif /* SUPPORT_LINKDOWN_RECOVERY */ + if (ret) { + DHD_ERROR(("%s Failed to bring up PCIe link\n", __FUNCTION__)); + goto done; + } + +done: +#endif /* CONFIG_ARCH_MSM */ + DHD_TRACE(("%s Exit:\n", __FUNCTION__)); + return ret; +} + +int +dhdpcie_stop_host_pcieclock(dhd_bus_t *bus) +{ + int ret = 0; +#ifdef CONFIG_ARCH_MSM +#ifdef SUPPORT_LINKDOWN_RECOVERY + int options = 0; +#endif /* SUPPORT_LINKDOWN_RECOVERY */ +#endif /* CONFIG_ARCH_MSM */ + + DHD_TRACE(("%s Enter:\n", __FUNCTION__)); + + if (bus == NULL) { + return BCME_ERROR; + } + + if (bus->dev == NULL) { + return BCME_ERROR; + } + +#ifdef CONFIG_ARCH_MSM +#ifdef SUPPORT_LINKDOWN_RECOVERY + if (bus->no_cfg_restore) { + options = MSM_PCIE_CONFIG_NO_CFG_RESTORE | MSM_PCIE_CONFIG_LINKDOWN; + } + + ret = msm_pcie_pm_control(MSM_PCIE_SUSPEND, bus->dev->bus->number, + bus->dev, NULL, options); +#else + ret = msm_pcie_pm_control(MSM_PCIE_SUSPEND, bus->dev->bus->number, + bus->dev, NULL, 0); +#endif /* SUPPORT_LINKDOWN_RECOVERY */ + if (ret) { + DHD_ERROR(("Failed to stop PCIe link\n")); + goto done; + } +done: +#endif /* CONFIG_ARCH_MSM */ + DHD_TRACE(("%s Exit:\n", __FUNCTION__)); + return ret; +} + +int +dhdpcie_disable_device(dhd_bus_t *bus) +{ + DHD_TRACE(("%s Enter:\n", __FUNCTION__)); + + if (bus == NULL) { + return BCME_ERROR; + } + + if (bus->dev == NULL) { + return BCME_ERROR; + } + + pci_disable_device(bus->dev); + + return 0; +} + +int +dhdpcie_enable_device(dhd_bus_t *bus) +{ + int ret = BCME_ERROR; +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + dhdpcie_info_t *pch; +#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0) */ + + DHD_TRACE(("%s Enter:\n", __FUNCTION__)); + + if (bus == NULL) { + return BCME_ERROR; + } + + if (bus->dev == NULL) { + return BCME_ERROR; + } + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) + pch = pci_get_drvdata(bus->dev); + if (pch == NULL) { + return BCME_ERROR; + } + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) && !defined(CONFIG_SOC_EXYNOS8890) + /* Updated with pci_load_and_free_saved_state to compatible + * with kernel 3.14 or higher + */ + pci_load_and_free_saved_state(bus->dev, &pch->default_state); + pch->default_state = pci_store_saved_state(bus->dev); +#else + pci_load_saved_state(bus->dev, pch->default_state); +#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) && !CONFIG_SOC_EXYNOS8890 */ + + pci_restore_state(bus->dev); +#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)) */ + + ret = pci_enable_device(bus->dev); + if (ret) { + pci_disable_device(bus->dev); + } else { + pci_set_master(bus->dev); + } + + return ret; +} + +int +dhdpcie_alloc_resource(dhd_bus_t *bus) +{ + dhdpcie_info_t *dhdpcie_info; + phys_addr_t bar0_addr, bar1_addr; + ulong bar1_size; + + do { + if (bus == NULL) { + DHD_ERROR(("%s: bus is NULL\n", __FUNCTION__)); + break; + } + + if (bus->dev == NULL) { + DHD_ERROR(("%s: bus->dev is NULL\n", __FUNCTION__)); + break; + } + + dhdpcie_info = pci_get_drvdata(bus->dev); + if (dhdpcie_info == NULL) { + DHD_ERROR(("%s: dhdpcie_info is NULL\n", __FUNCTION__)); + break; + } + + bar0_addr = pci_resource_start(bus->dev, 0); /* Bar-0 mapped address */ + bar1_addr = pci_resource_start(bus->dev, 2); /* Bar-1 mapped address */ + + /* read Bar-1 mapped memory range */ + bar1_size = pci_resource_len(bus->dev, 2); + + if ((bar1_size == 0) || (bar1_addr == 0)) { + printf("%s: BAR1 Not enabled for this device size(%ld)," + " addr(0x"PRINTF_RESOURCE")\n", + __FUNCTION__, bar1_size, bar1_addr); + break; + } + + dhdpcie_info->regs = (volatile char *) REG_MAP(bar0_addr, DONGLE_REG_MAP_SIZE); + if (!dhdpcie_info->regs) { + DHD_ERROR(("%s: ioremap() for regs is failed\n", __FUNCTION__)); + break; + } + + bus->regs = dhdpcie_info->regs; + dhdpcie_info->tcm = (volatile char *) REG_MAP(bar1_addr, DONGLE_TCM_MAP_SIZE); + dhdpcie_info->tcm_size = DONGLE_TCM_MAP_SIZE; + if (!dhdpcie_info->tcm) { + DHD_ERROR(("%s: ioremap() for regs is failed\n", __FUNCTION__)); + REG_UNMAP(dhdpcie_info->regs); + bus->regs = NULL; + break; + } + + bus->tcm = dhdpcie_info->tcm; + + DHD_TRACE(("%s:Phys addr : reg space = %p base addr 0x"PRINTF_RESOURCE" \n", + __FUNCTION__, dhdpcie_info->regs, bar0_addr)); + DHD_TRACE(("%s:Phys addr : tcm_space = %p base addr 0x"PRINTF_RESOURCE" \n", + __FUNCTION__, dhdpcie_info->tcm, bar1_addr)); + + return 0; + } while (0); + + return BCME_ERROR; +} + +void +dhdpcie_free_resource(dhd_bus_t *bus) +{ + dhdpcie_info_t *dhdpcie_info; + + if (bus == NULL) { + DHD_ERROR(("%s: bus is NULL\n", __FUNCTION__)); + return; + } + + if (bus->dev == NULL) { + DHD_ERROR(("%s: bus->dev is NULL\n", __FUNCTION__)); + return; + } + + dhdpcie_info = pci_get_drvdata(bus->dev); + if (dhdpcie_info == NULL) { + DHD_ERROR(("%s: dhdpcie_info is NULL\n", __FUNCTION__)); + return; + } + + if (bus->regs) { + REG_UNMAP(dhdpcie_info->regs); + bus->regs = NULL; + } + + if (bus->tcm) { + REG_UNMAP(dhdpcie_info->tcm); + bus->tcm = NULL; + } +} + +int +dhdpcie_bus_request_irq(struct dhd_bus *bus) +{ + dhdpcie_info_t *dhdpcie_info; + int ret = 0; + + if (bus == NULL) { + DHD_ERROR(("%s: bus is NULL\n", __FUNCTION__)); + return BCME_ERROR; + } + + if (bus->dev == NULL) { + DHD_ERROR(("%s: bus->dev is NULL\n", __FUNCTION__)); + return BCME_ERROR; + } + + dhdpcie_info = pci_get_drvdata(bus->dev); + if (dhdpcie_info == NULL) { + DHD_ERROR(("%s: dhdpcie_info is NULL\n", __FUNCTION__)); + return BCME_ERROR; + } + + if (bus->intr) { + /* Register interrupt callback, but mask it (not operational yet). */ + DHD_INTR(("%s: Registering and masking interrupts\n", __FUNCTION__)); + dhdpcie_bus_intr_disable(bus); + ret = dhdpcie_request_irq(dhdpcie_info); + if (ret) { + DHD_ERROR(("%s: request_irq() failed, ret=%d\n", + __FUNCTION__, ret)); + return ret; + } + } + + return ret; +} + +#ifdef BCMPCIE_OOB_HOST_WAKE +void dhdpcie_oob_intr_set(dhd_bus_t *bus, bool enable) +{ + unsigned long flags; + dhdpcie_info_t *pch; + dhdpcie_os_info_t *dhdpcie_osinfo; + + if (bus == NULL) { + DHD_ERROR(("%s: bus is NULL\n", __FUNCTION__)); + return; + } + + if (bus->dev == NULL) { + DHD_ERROR(("%s: bus->dev is NULL\n", __FUNCTION__)); + return; + } + + pch = pci_get_drvdata(bus->dev); + if (pch == NULL) { + DHD_ERROR(("%s: pch is NULL\n", __FUNCTION__)); + return; + } + + dhdpcie_osinfo = (dhdpcie_os_info_t *)pch->os_cxt; + spin_lock_irqsave(&dhdpcie_osinfo->oob_irq_spinlock, flags); + if ((dhdpcie_osinfo->oob_irq_enabled != enable) && + (dhdpcie_osinfo->oob_irq_num > 0)) { + if (enable) { + enable_irq(dhdpcie_osinfo->oob_irq_num); + } else { + disable_irq_nosync(dhdpcie_osinfo->oob_irq_num); + } + dhdpcie_osinfo->oob_irq_enabled = enable; + } + spin_unlock_irqrestore(&dhdpcie_osinfo->oob_irq_spinlock, flags); +} + +static irqreturn_t wlan_oob_irq(int irq, void *data) +{ + dhd_bus_t *bus; + DHD_TRACE(("%s: IRQ Triggered\n", __FUNCTION__)); + bus = (dhd_bus_t *)data; + dhdpcie_oob_intr_set(bus, FALSE); +#ifdef DHD_PCIE_RUNTIMEPM + dhdpcie_runtime_bus_wake(bus->dhd, FALSE, wlan_oob_irq); +#endif /* DHD_PCIE_RUNTIMPM */ + if (bus->dhd->up && bus->suspended) { + DHD_OS_OOB_IRQ_WAKE_LOCK_TIMEOUT(bus->dhd, OOB_WAKE_LOCK_TIMEOUT); + } + return IRQ_HANDLED; +} + +int dhdpcie_oob_intr_register(dhd_bus_t *bus) +{ + int err = 0; + dhdpcie_info_t *pch; + dhdpcie_os_info_t *dhdpcie_osinfo; + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + if (bus == NULL) { + DHD_ERROR(("%s: bus is NULL\n", __FUNCTION__)); + return -EINVAL; + } + + if (bus->dev == NULL) { + DHD_ERROR(("%s: bus->dev is NULL\n", __FUNCTION__)); + return -EINVAL; + } + + pch = pci_get_drvdata(bus->dev); + if (pch == NULL) { + DHD_ERROR(("%s: pch is NULL\n", __FUNCTION__)); + return -EINVAL; + } + + dhdpcie_osinfo = (dhdpcie_os_info_t *)pch->os_cxt; + if (dhdpcie_osinfo->oob_irq_registered) { + DHD_ERROR(("%s: irq is already registered\n", __FUNCTION__)); + return -EBUSY; + } + + if (dhdpcie_osinfo->oob_irq_num > 0) { + DHD_INFO_HW4(("%s OOB irq=%d flags=%X \n", __FUNCTION__, + (int)dhdpcie_osinfo->oob_irq_num, + (int)dhdpcie_osinfo->oob_irq_flags)); + err = request_irq(dhdpcie_osinfo->oob_irq_num, wlan_oob_irq, + dhdpcie_osinfo->oob_irq_flags, "dhdpcie_host_wake", + bus); + if (err) { + DHD_ERROR(("%s: request_irq failed with %d\n", + __FUNCTION__, err)); + return err; + } + err = enable_irq_wake(dhdpcie_osinfo->oob_irq_num); + if (!err) { + dhdpcie_osinfo->oob_irq_wake_enabled = TRUE; + } + dhdpcie_osinfo->oob_irq_enabled = TRUE; + } + + dhdpcie_osinfo->oob_irq_registered = TRUE; + + return err; +} + +void dhdpcie_oob_intr_unregister(dhd_bus_t *bus) +{ + int err = 0; + dhdpcie_info_t *pch; + dhdpcie_os_info_t *dhdpcie_osinfo; + + DHD_TRACE(("%s: Enter\n", __FUNCTION__)); + if (bus == NULL) { + DHD_ERROR(("%s: bus is NULL\n", __FUNCTION__)); + return; + } + + if (bus->dev == NULL) { + DHD_ERROR(("%s: bus->dev is NULL\n", __FUNCTION__)); + return; + } + + pch = pci_get_drvdata(bus->dev); + if (pch == NULL) { + DHD_ERROR(("%s: pch is NULL\n", __FUNCTION__)); + return; + } + + dhdpcie_osinfo = (dhdpcie_os_info_t *)pch->os_cxt; + if (!dhdpcie_osinfo->oob_irq_registered) { + DHD_ERROR(("%s: irq is not registered\n", __FUNCTION__)); + return; + } + if (dhdpcie_osinfo->oob_irq_num > 0) { + if (dhdpcie_osinfo->oob_irq_wake_enabled) { + err = disable_irq_wake(dhdpcie_osinfo->oob_irq_num); + if (!err) { + dhdpcie_osinfo->oob_irq_wake_enabled = FALSE; + } + } + if (dhdpcie_osinfo->oob_irq_enabled) { + disable_irq(dhdpcie_osinfo->oob_irq_num); + dhdpcie_osinfo->oob_irq_enabled = FALSE; + } + free_irq(dhdpcie_osinfo->oob_irq_num, bus); + } + dhdpcie_osinfo->oob_irq_registered = FALSE; +} +#endif /* BCMPCIE_OOB_HOST_WAKE */ + +#ifdef DHD_PCIE_RUNTIMEPM +bool dhd_runtimepm_state(dhd_pub_t *dhd) +{ + dhd_bus_t *bus; + unsigned long flags; + bus = dhd->bus; + + DHD_GENERAL_LOCK(dhd, flags); + if (bus->suspended == TRUE) { + DHD_GENERAL_UNLOCK(dhd, flags); + DHD_INFO(("Bus is already suspended system PM: %d\n", bus->suspended)); + return FALSE; + } + + bus->idlecount++; + + DHD_TRACE(("%s : Enter \n", __FUNCTION__)); + if ((bus->idletime > 0) && (bus->idlecount >= bus->idletime)) { + bus->idlecount = 0; + if (dhd->dhd_bus_busy_state == 0 && dhd->busstate != DHD_BUS_DOWN && + dhd->busstate != DHD_BUS_DOWN_IN_PROGRESS) { + bus->bus_wake = 0; + dhd->dhd_bus_busy_state |= DHD_BUS_BUSY_RPM_SUSPEND_IN_PROGRESS; + bus->runtime_resume_done = FALSE; + /* stop all interface network queue. */ + dhd_bus_stop_queue(bus); + DHD_GENERAL_UNLOCK(dhd, flags); + DHD_ERROR(("%s: DHD Idle state!! - idletime :%d, wdtick :%d \n", + __FUNCTION__, bus->idletime, dhd_runtimepm_ms)); + /* RPM suspend is failed, return FALSE then re-trying */ + if (dhdpcie_set_suspend_resume(bus->dev, TRUE)) { + DHD_ERROR(("%s: exit with wakelock \n", __FUNCTION__)); + DHD_GENERAL_LOCK(dhd, flags); + dhd->dhd_bus_busy_state &= ~DHD_BUS_BUSY_RPM_SUSPEND_IN_PROGRESS; + bus->runtime_resume_done = TRUE; + /* It can make stuck NET TX Queue without below */ + dhd_bus_start_queue(bus); + DHD_GENERAL_UNLOCK(dhd, flags); + smp_wmb(); + wake_up_interruptible(&bus->rpm_queue); + return FALSE; + } + + DHD_GENERAL_LOCK(dhd, flags); + dhd->dhd_bus_busy_state &= ~DHD_BUS_BUSY_RPM_SUSPEND_IN_PROGRESS; + dhd->dhd_bus_busy_state |= DHD_BUS_BUSY_RPM_SUSPEND_DONE; + /* For making sure NET TX Queue active */ + dhd_bus_start_queue(bus); + DHD_GENERAL_UNLOCK(dhd, flags); + + wait_event_interruptible(bus->rpm_queue, bus->bus_wake); + + DHD_GENERAL_LOCK(dhd, flags); + dhd->dhd_bus_busy_state &= ~DHD_BUS_BUSY_RPM_SUSPEND_DONE; + dhd->dhd_bus_busy_state |= DHD_BUS_BUSY_RPM_RESUME_IN_PROGRESS; + DHD_GENERAL_UNLOCK(dhd, flags); + + dhdpcie_set_suspend_resume(bus->dev, FALSE); + + DHD_GENERAL_LOCK(dhd, flags); + dhd->dhd_bus_busy_state &= ~DHD_BUS_BUSY_RPM_RESUME_IN_PROGRESS; + /* Inform the wake up context that Resume is over */ + bus->runtime_resume_done = TRUE; + /* For making sure NET TX Queue active */ + dhd_bus_start_queue(bus); + DHD_GENERAL_UNLOCK(dhd, flags); + + smp_wmb(); + wake_up_interruptible(&bus->rpm_queue); + DHD_ERROR(("%s : runtime resume ended\n", __FUNCTION__)); + return TRUE; + } else { + DHD_GENERAL_UNLOCK(dhd, flags); + /* Since one of the contexts are busy (TX, IOVAR or RX) + * we should not suspend + */ + DHD_ERROR(("%s : bus is active with dhd_bus_busy_state = 0x%x\n", + __FUNCTION__, dhd->dhd_bus_busy_state)); + return FALSE; + } + } + + DHD_GENERAL_UNLOCK(dhd, flags); + return FALSE; +} /* dhd_runtimepm_state */ + +/* + * dhd_runtime_bus_wake + * TRUE - related with runtime pm context + * FALSE - It isn't invloved in runtime pm context + */ +bool dhd_runtime_bus_wake(dhd_bus_t *bus, bool wait, void *func_addr) +{ + unsigned long flags; + bus->idlecount = 0; + DHD_TRACE(("%s : enter\n", __FUNCTION__)); + if (bus->dhd->up == FALSE) { + DHD_INFO(("%s : dhd is not up\n", __FUNCTION__)); + return FALSE; + } + + DHD_GENERAL_LOCK(bus->dhd, flags); + if (bus->dhd->dhd_bus_busy_state & DHD_BUS_BUSY_RPM_ALL) { + /* Wake up RPM state thread if it is suspend in progress or suspended */ + if (bus->dhd->dhd_bus_busy_state & DHD_BUS_BUSY_RPM_SUSPEND_IN_PROGRESS || + bus->dhd->dhd_bus_busy_state & DHD_BUS_BUSY_RPM_SUSPEND_DONE) { + bus->bus_wake = 1; + + DHD_GENERAL_UNLOCK(bus->dhd, flags); + + DHD_ERROR(("Runtime Resume is called in %pf\n", func_addr)); + smp_wmb(); + wake_up_interruptible(&bus->rpm_queue); + /* No need to wake up the RPM state thread */ + } else if (bus->dhd->dhd_bus_busy_state & DHD_BUS_BUSY_RPM_RESUME_IN_PROGRESS) { + DHD_GENERAL_UNLOCK(bus->dhd, flags); + } + + /* If wait is TRUE, function with wait = TRUE will be wait in here */ + if (wait) { + wait_event_interruptible(bus->rpm_queue, bus->runtime_resume_done); + } else { + DHD_INFO(("%s: bus wakeup but no wait until resume done\n", __FUNCTION__)); + } + /* If it is called from RPM context, it returns TRUE */ + return TRUE; + } + + DHD_GENERAL_UNLOCK(bus->dhd, flags); + + return FALSE; +} + +bool dhdpcie_runtime_bus_wake(dhd_pub_t *dhdp, bool wait, void* func_addr) +{ + dhd_bus_t *bus = dhdp->bus; + return dhd_runtime_bus_wake(bus, wait, func_addr); +} + +void dhdpcie_block_runtime_pm(dhd_pub_t *dhdp) +{ + dhd_bus_t *bus = dhdp->bus; + bus->idletime = 0; +} + +bool dhdpcie_is_resume_done(dhd_pub_t *dhdp) +{ + dhd_bus_t *bus = dhdp->bus; + return bus->runtime_resume_done; +} +#endif /* DHD_PCIE_RUNTIMEPM */ |