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Release 4.11 drivers/net/wireless/ath/wil6210/pcie_bus.c

/*
 * Copyright (c) 2012-2016 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/module.h>
#include <linux/pci.h>
#include <linux/moduleparam.h>
#include <linux/interrupt.h>
#include <linux/suspend.h>
#include "wil6210.h"
#include <linux/rtnetlink.h>


static bool use_msi = true;
module_param(use_msi, bool, 0444);
MODULE_PARM_DESC(use_msi, " Use MSI interrupt, default - true");

#ifdef CONFIG_PM
#ifdef CONFIG_PM_SLEEP
static int wil6210_pm_notify(struct notifier_block *notify_block,
			     unsigned long mode, void *unused);
#endif /* CONFIG_PM_SLEEP */
#endif /* CONFIG_PM */


static void wil_set_capabilities(struct wil6210_priv *wil) { u32 jtag_id = wil_r(wil, RGF_USER_JTAG_DEV_ID); u8 chip_revision = (wil_r(wil, RGF_USER_REVISION_ID) & RGF_USER_REVISION_ID_MASK); bitmap_zero(wil->hw_capabilities, hw_capability_last); bitmap_zero(wil->fw_capabilities, WMI_FW_CAPABILITY_MAX); wil->wil_fw_name = WIL_FW_NAME_DEFAULT; wil->chip_revision = chip_revision; switch (jtag_id) { case JTAG_DEV_ID_SPARROW: switch (chip_revision) { case REVISION_ID_SPARROW_D0: wil->hw_name = "Sparrow D0"; wil->hw_version = HW_VER_SPARROW_D0; if (wil_fw_verify_file_exists(wil, WIL_FW_NAME_SPARROW_PLUS)) wil->wil_fw_name = WIL_FW_NAME_SPARROW_PLUS; break; case REVISION_ID_SPARROW_B0: wil->hw_name = "Sparrow B0"; wil->hw_version = HW_VER_SPARROW_B0; break; default: wil->hw_name = "Unknown"; wil->hw_version = HW_VER_UNKNOWN; break; } break; default: wil_err(wil, "Unknown board hardware, chip_id 0x%08x, chip_revision 0x%08x\n", jtag_id, chip_revision); wil->hw_name = "Unknown"; wil->hw_version = HW_VER_UNKNOWN; } wil_info(wil, "Board hardware is %s\n", wil->hw_name); /* extract FW capabilities from file without loading the FW */ wil_request_firmware(wil, wil->wil_fw_name, false); }

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Lazar Alexei9148.15%120.00%
Vladimir Kondratiev8042.33%360.00%
Lior David189.52%120.00%
Total189100.00%5100.00%


void wil_disable_irq(struct wil6210_priv *wil) { disable_irq(wil->pdev->irq); }

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Vladimir Kondratiev19100.00%2100.00%
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void wil_enable_irq(struct wil6210_priv *wil) { enable_irq(wil->pdev->irq); }

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Vladimir Kondratiev19100.00%2100.00%
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/* Bus ops */
static int wil_if_pcie_enable(struct wil6210_priv *wil) { struct pci_dev *pdev = wil->pdev; int rc; /* on platforms with buggy ACPI, pdev->msi_enabled may be set to * allow pci_enable_device to work. This indicates INTx was not routed * and only MSI should be used */ int msi_only = pdev->msi_enabled; bool _use_msi = use_msi; bool wmi_only = test_bit(WMI_FW_CAPABILITY_WMI_ONLY, wil->fw_capabilities); wil_dbg_misc(wil, "if_pcie_enable, wmi_only %d\n", wmi_only); pdev->msi_enabled = 0; pci_set_master(pdev); wil_dbg_misc(wil, "Setup %s interrupt\n", use_msi ? "MSI" : "INTx"); if (use_msi && pci_enable_msi(pdev)) { wil_err(wil, "pci_enable_msi failed, use INTx\n"); _use_msi = false; } if (!_use_msi && msi_only) { wil_err(wil, "Interrupt pin not routed, unable to use INTx\n"); rc = -ENODEV; goto stop_master; } rc = wil6210_init_irq(wil, pdev->irq, _use_msi); if (rc) goto stop_master; /* need reset here to obtain MAC or in case of WMI-only FW, full reset * and fw loading takes place */ mutex_lock(&wil->mutex); rc = wil_reset(wil, wmi_only); mutex_unlock(&wil->mutex); if (rc) goto release_irq; return 0; release_irq: wil6210_fini_irq(wil, pdev->irq); /* safe to call if no MSI */ pci_disable_msi(pdev); stop_master: pci_clear_master(pdev); return rc; }

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Vladimir Kondratiev18487.62%675.00%
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Alexander Gordeev94.29%112.50%
Total210100.00%8100.00%


static int wil_if_pcie_disable(struct wil6210_priv *wil) { struct pci_dev *pdev = wil->pdev; wil_dbg_misc(wil, "if_pcie_disable\n"); pci_clear_master(pdev); /* disable and release IRQ */ wil6210_fini_irq(wil, pdev->irq); /* safe to call if no MSI */ pci_disable_msi(pdev); /* TODO: disable HW */ return 0; }

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Vladimir Kondratiev5198.08%266.67%
Lazar Alexei11.92%133.33%
Total52100.00%3100.00%


static int wil_platform_rop_ramdump(void *wil_handle, void *buf, uint32_t size) { struct wil6210_priv *wil = wil_handle; if (!wil) return -EINVAL; return wil_fw_copy_crash_dump(wil, buf, size); }

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Lior David43100.00%1100.00%
Total43100.00%1100.00%


static int wil_platform_rop_fw_recovery(void *wil_handle) { struct wil6210_priv *wil = wil_handle; if (!wil) return -EINVAL; wil_fw_error_recovery(wil); return 0; }

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Lior David34100.00%1100.00%
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static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct wil6210_priv *wil; struct device *dev = &pdev->dev; int rc; const struct wil_platform_rops rops = { .ramdump = wil_platform_rop_ramdump, .fw_recovery = wil_platform_rop_fw_recovery, }; /* check HW */ dev_info(&pdev->dev, WIL_NAME " device found [%04x:%04x] (rev %x)\n", (int)pdev->vendor, (int)pdev->device, (int)pdev->revision); if (pci_resource_len(pdev, 0) != WIL6210_MEM_SIZE) { dev_err(&pdev->dev, "Not " WIL_NAME "? " "BAR0 size is %lu while expecting %lu\n", (ulong)pci_resource_len(pdev, 0), WIL6210_MEM_SIZE); return -ENODEV; } wil = wil_if_alloc(dev); if (IS_ERR(wil)) { rc = (int)PTR_ERR(wil); dev_err(dev, "wil_if_alloc failed: %d\n", rc); return rc; } wil->pdev = pdev; pci_set_drvdata(pdev, wil); /* rollback to if_free */ wil->platform_handle = wil_platform_init(&pdev->dev, &wil->platform_ops, &rops, wil); if (!wil->platform_handle) { rc = -ENODEV; wil_err(wil, "wil_platform_init failed\n"); goto if_free; } /* rollback to err_plat */ rc = pci_enable_device(pdev); if (rc) { wil_err(wil, "pci_enable_device failed, retry with MSI only\n"); /* Work around for platforms that can't allocate IRQ: * retry with MSI only */ pdev->msi_enabled = 1; rc = pci_enable_device(pdev); } if (rc) { wil_err(wil, "pci_enable_device failed, even with MSI only\n"); goto err_plat; } /* rollback to err_disable_pdev */ rc = pci_request_region(pdev, 0, WIL_NAME); if (rc) { wil_err(wil, "pci_request_region failed\n"); goto err_disable_pdev; } /* rollback to err_release_reg */ wil->csr = pci_ioremap_bar(pdev, 0); if (!wil->csr) { wil_err(wil, "pci_ioremap_bar failed\n"); rc = -ENODEV; goto err_release_reg; } /* rollback to err_iounmap */ wil_info(wil, "CSR at %pR -> 0x%p\n", &pdev->resource[0], wil->csr); wil_set_capabilities(wil); wil6210_clear_irq(wil); /* FW should raise IRQ when ready */ rc = wil_if_pcie_enable(wil); if (rc) { wil_err(wil, "Enable device failed\n"); goto err_iounmap; } /* rollback to bus_disable */ rc = wil_if_add(wil); if (rc) { wil_err(wil, "wil_if_add failed: %d\n", rc); goto bus_disable; } #ifdef CONFIG_PM #ifdef CONFIG_PM_SLEEP wil->pm_notify.notifier_call = wil6210_pm_notify; rc = register_pm_notifier(&wil->pm_notify); if (rc) /* Do not fail the driver initialization, as suspend can * be prevented in a later phase if needed */ wil_err(wil, "register_pm_notifier failed: %d\n", rc); #endif /* CONFIG_PM_SLEEP */ #endif /* CONFIG_PM */ wil6210_debugfs_init(wil); return 0; bus_disable: wil_if_pcie_disable(wil); err_iounmap: pci_iounmap(pdev, wil->csr); err_release_reg: pci_release_region(pdev, 0); err_disable_pdev: pci_disable_device(pdev); err_plat: if (wil->platform_ops.uninit) wil->platform_ops.uninit(wil->platform_handle); if_free: wil_if_free(wil); return rc; }

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Vladimir Kondratiev47187.71%777.78%
Maya Erez448.19%111.11%
Lior David224.10%111.11%
Total537100.00%9100.00%


static void wil_pcie_remove(struct pci_dev *pdev) { struct wil6210_priv *wil = pci_get_drvdata(pdev); void __iomem *csr = wil->csr; wil_dbg_misc(wil, "pcie_remove\n"); #ifdef CONFIG_PM #ifdef CONFIG_PM_SLEEP unregister_pm_notifier(&wil->pm_notify); #endif /* CONFIG_PM_SLEEP */ #endif /* CONFIG_PM */ wil6210_debugfs_remove(wil); rtnl_lock(); wil_p2p_wdev_free(wil); rtnl_unlock(); wil_if_remove(wil); wil_if_pcie_disable(wil); pci_iounmap(pdev, csr); pci_release_region(pdev, 0); pci_disable_device(pdev); if (wil->platform_ops.uninit) wil->platform_ops.uninit(wil->platform_handle); wil_if_free(wil); }

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Vladimir Kondratiev9273.02%555.56%
Maya Erez3124.60%222.22%
Dedy Lansky21.59%111.11%
Lazar Alexei10.79%111.11%
Total126100.00%9100.00%

static const struct pci_device_id wil6210_pcie_ids[] = { { PCI_DEVICE(0x1ae9, 0x0310) }, { PCI_DEVICE(0x1ae9, 0x0302) }, /* same as above, firmware broken */ { /* end: all zeroes */ }, }; MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids); #ifdef CONFIG_PM #ifdef CONFIG_PM_SLEEP
static int wil6210_suspend(struct device *dev, bool is_runtime) { int rc = 0; struct pci_dev *pdev = to_pci_dev(dev); struct wil6210_priv *wil = pci_get_drvdata(pdev); wil_dbg_pm(wil, "suspend: %s\n", is_runtime ? "runtime" : "system"); rc = wil_can_suspend(wil, is_runtime); if (rc) goto out; rc = wil_suspend(wil, is_runtime); if (rc) goto out; /* TODO: how do I bring card in low power state? */ /* disable bus mastering */ pci_clear_master(pdev); /* PCI will call pci_save_state(pdev) and pci_prepare_to_sleep(pdev) */ out: return rc; }

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Vladimir Kondratiev9698.97%150.00%
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static int wil6210_resume(struct device *dev, bool is_runtime) { int rc = 0; struct pci_dev *pdev = to_pci_dev(dev); struct wil6210_priv *wil = pci_get_drvdata(pdev); wil_dbg_pm(wil, "resume: %s\n", is_runtime ? "runtime" : "system"); /* allow master */ pci_set_master(pdev); rc = wil_resume(wil, is_runtime); if (rc) pci_clear_master(pdev); return rc; }

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Vladimir Kondratiev7898.73%150.00%
Lazar Alexei11.27%150.00%
Total79100.00%2100.00%


static int wil6210_pm_notify(struct notifier_block *notify_block, unsigned long mode, void *unused) { struct wil6210_priv *wil = container_of( notify_block, struct wil6210_priv, pm_notify); int rc = 0; enum wil_platform_event evt; wil_dbg_pm(wil, "pm_notify: mode (%ld)\n", mode); switch (mode) { case PM_HIBERNATION_PREPARE: case PM_SUSPEND_PREPARE: case PM_RESTORE_PREPARE: rc = wil_can_suspend(wil, false); if (rc) break; evt = WIL_PLATFORM_EVT_PRE_SUSPEND; if (wil->platform_ops.notify) rc = wil->platform_ops.notify(wil->platform_handle, evt); break; case PM_POST_SUSPEND: case PM_POST_HIBERNATION: case PM_POST_RESTORE: evt = WIL_PLATFORM_EVT_POST_SUSPEND; if (wil->platform_ops.notify) rc = wil->platform_ops.notify(wil->platform_handle, evt); break; default: wil_dbg_pm(wil, "unhandled notify mode %ld\n", mode); break; } wil_dbg_pm(wil, "notification mode %ld: rc (%d)\n", mode, rc); return rc; }

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Maya Erez17099.42%150.00%
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static int wil6210_pm_suspend(struct device *dev) { return wil6210_suspend(dev, false); }

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Vladimir Kondratiev19100.00%1100.00%
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static int wil6210_pm_resume(struct device *dev) { return wil6210_resume(dev, false); }

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Vladimir Kondratiev19100.00%1100.00%
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#endif /* CONFIG_PM_SLEEP */ #endif /* CONFIG_PM */ static const struct dev_pm_ops wil6210_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(wil6210_pm_suspend, wil6210_pm_resume) }; static struct pci_driver wil6210_driver = { .probe = wil_pcie_probe, .remove = wil_pcie_remove, .id_table = wil6210_pcie_ids, .name = WIL_NAME, .driver = { .pm = &wil6210_pm_ops, }, };
static int __init wil6210_driver_init(void) { int rc; rc = wil_platform_modinit(); if (rc) return rc; rc = pci_register_driver(&wil6210_driver); if (rc) wil_platform_modexit(); return rc; }

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Vladimir Kondratiev42100.00%1100.00%
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module_init(wil6210_driver_init);
static void __exit wil6210_driver_exit(void) { pci_unregister_driver(&wil6210_driver); wil_platform_modexit(); }

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module_exit(wil6210_driver_exit); MODULE_LICENSE("Dual BSD/GPL"); MODULE_AUTHOR("Qualcomm Atheros <wil6210@qca.qualcomm.com>"); MODULE_DESCRIPTION("Driver for 60g WiFi WIL6210 card");

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Vladimir Kondratiev135472.10%2066.67%
Maya Erez28315.07%310.00%
Lior David1176.23%26.67%
Lazar Alexei965.11%26.67%
Dedy Lansky191.01%26.67%
Alexander Gordeev90.48%13.33%
Total1878100.00%30100.00%
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