| /* |
| * 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 */ |