| /* |
| * Copyright (c) 2012 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 "wil6210.h" |
| |
| static int use_msi = 1; |
| module_param(use_msi, int, S_IRUGO); |
| MODULE_PARM_DESC(use_msi, |
| " Use MSI interrupt: " |
| "0 - don't, 1 - (default) - single, or 3"); |
| |
| static bool debug_fw; /* = false; */ |
| module_param(debug_fw, bool, S_IRUGO); |
| MODULE_PARM_DESC(debug_fw, " load driver if FW not ready. For FW debug"); |
| |
| /* 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; |
| |
| pdev->msi_enabled = 0; |
| |
| pci_set_master(pdev); |
| |
| /* |
| * how many MSI interrupts to request? |
| */ |
| switch (use_msi) { |
| case 3: |
| case 1: |
| wil_dbg_misc(wil, "Setup %d MSI interrupts\n", use_msi); |
| break; |
| case 0: |
| wil_dbg_misc(wil, "MSI interrupts disabled, use INTx\n"); |
| break; |
| default: |
| wil_err(wil, "Invalid use_msi=%d, default to 1\n", use_msi); |
| use_msi = 1; |
| } |
| |
| if (use_msi == 3 && pci_enable_msi_range(pdev, 3, 3) < 0) { |
| wil_err(wil, "3 MSI mode failed, try 1 MSI\n"); |
| use_msi = 1; |
| } |
| |
| if (use_msi == 1 && pci_enable_msi(pdev)) { |
| wil_err(wil, "pci_enable_msi failed, use INTx\n"); |
| use_msi = 0; |
| } |
| |
| wil->n_msi = use_msi; |
| |
| if ((wil->n_msi == 0) && 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); |
| if (rc) |
| goto stop_master; |
| |
| /* need reset here to obtain MAC */ |
| mutex_lock(&wil->mutex); |
| rc = wil_reset(wil); |
| mutex_unlock(&wil->mutex); |
| if (debug_fw) |
| rc = 0; |
| 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; |
| } |
| |
| static int wil_if_pcie_disable(struct wil6210_priv *wil) |
| { |
| struct pci_dev *pdev = wil->pdev; |
| |
| 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; |
| } |
| |
| static int wil_pcie_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| { |
| struct wil6210_priv *wil; |
| struct device *dev = &pdev->dev; |
| void __iomem *csr; |
| struct wil_board *board = (struct wil_board *)id->driver_data; |
| int rc; |
| |
| /* check HW */ |
| dev_info(&pdev->dev, WIL_NAME |
| " \"%s\" device found [%04x:%04x] (rev %x)\n", board->name, |
| (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; |
| } |
| |
| rc = pci_enable_device(pdev); |
| if (rc) { |
| dev_err(&pdev->dev, |
| "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) |
| return -ENODEV; |
| /* rollback to err_disable_pdev */ |
| |
| rc = pci_request_region(pdev, 0, WIL_NAME); |
| if (rc) { |
| dev_err(&pdev->dev, "pci_request_region failed\n"); |
| goto err_disable_pdev; |
| } |
| /* rollback to err_release_reg */ |
| |
| csr = pci_ioremap_bar(pdev, 0); |
| if (!csr) { |
| dev_err(&pdev->dev, "pci_ioremap_bar failed\n"); |
| rc = -ENODEV; |
| goto err_release_reg; |
| } |
| /* rollback to err_iounmap */ |
| dev_info(&pdev->dev, "CSR at %pR -> 0x%p\n", &pdev->resource[0], csr); |
| |
| wil = wil_if_alloc(dev, csr); |
| if (IS_ERR(wil)) { |
| rc = (int)PTR_ERR(wil); |
| dev_err(dev, "wil_if_alloc failed: %d\n", rc); |
| goto err_iounmap; |
| } |
| /* rollback to if_free */ |
| |
| pci_set_drvdata(pdev, wil); |
| wil->pdev = pdev; |
| wil->board = board; |
| |
| 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 if_free; |
| } |
| /* rollback to bus_disable */ |
| |
| rc = wil_if_add(wil); |
| if (rc) { |
| wil_err(wil, "wil_if_add failed: %d\n", rc); |
| goto bus_disable; |
| } |
| |
| wil6210_debugfs_init(wil); |
| |
| /* check FW is alive */ |
| wmi_echo(wil); |
| |
| return 0; |
| |
| bus_disable: |
| wil_if_pcie_disable(wil); |
| if_free: |
| wil_if_free(wil); |
| err_iounmap: |
| pci_iounmap(pdev, csr); |
| err_release_reg: |
| pci_release_region(pdev, 0); |
| err_disable_pdev: |
| pci_disable_device(pdev); |
| |
| return rc; |
| } |
| |
| static void wil_pcie_remove(struct pci_dev *pdev) |
| { |
| struct wil6210_priv *wil = pci_get_drvdata(pdev); |
| |
| wil6210_debugfs_remove(wil); |
| wil_if_pcie_disable(wil); |
| wil_if_remove(wil); |
| wil_if_free(wil); |
| pci_iounmap(pdev, wil->csr); |
| pci_release_region(pdev, 0); |
| pci_disable_device(pdev); |
| } |
| |
| static const struct wil_board wil_board_marlon = { |
| .board = WIL_BOARD_MARLON, |
| .name = "marlon", |
| }; |
| |
| static const struct wil_board wil_board_sparrow = { |
| .board = WIL_BOARD_SPARROW, |
| .name = "sparrow", |
| }; |
| |
| static const struct pci_device_id wil6210_pcie_ids[] = { |
| { PCI_DEVICE(0x1ae9, 0x0301), |
| .driver_data = (kernel_ulong_t)&wil_board_marlon }, |
| { PCI_DEVICE(0x1ae9, 0x0310), |
| .driver_data = (kernel_ulong_t)&wil_board_sparrow }, |
| { /* end: all zeroes */ }, |
| }; |
| MODULE_DEVICE_TABLE(pci, wil6210_pcie_ids); |
| |
| static struct pci_driver wil6210_driver = { |
| .probe = wil_pcie_probe, |
| .remove = wil_pcie_remove, |
| .id_table = wil6210_pcie_ids, |
| .name = WIL_NAME, |
| }; |
| |
| module_pci_driver(wil6210_driver); |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_AUTHOR("Qualcomm Atheros <wil6210@qca.qualcomm.com>"); |
| MODULE_DESCRIPTION("Driver for 60g WiFi WIL6210 card"); |