/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, * USA * * The full GNU General Public License is included in this distribution * in the file called LICENSE.GPL. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *****************************************************************************/ #include #include #include "iwl-pci.h" #include "iwl-agn.h" #include "iwl-core.h" #include "iwl-io.h" /* PCI registers */ #define PCI_CFG_RETRY_TIMEOUT 0x041 #define PCI_CFG_LINK_CTRL_VAL_L0S_EN 0x01 #define PCI_CFG_LINK_CTRL_VAL_L1_EN 0x02 struct iwl_pci_bus { /* basic pci-network driver stuff */ struct pci_dev *pci_dev; /* pci hardware address support */ void __iomem *hw_base; }; #define IWL_BUS_GET_PCI_BUS(_iwl_bus) \ ((struct iwl_pci_bus *) ((_iwl_bus)->bus_specific)) #define IWL_BUS_GET_PCI_DEV(_iwl_bus) \ ((IWL_BUS_GET_PCI_BUS(_iwl_bus))->pci_dev) static u16 iwl_pciexp_link_ctrl(struct iwl_bus *bus) { int pos; u16 pci_lnk_ctl; struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus); pos = pci_find_capability(pci_dev, PCI_CAP_ID_EXP); pci_read_config_word(pci_dev, pos + PCI_EXP_LNKCTL, &pci_lnk_ctl); return pci_lnk_ctl; } static bool iwl_pci_is_pm_supported(struct iwl_bus *bus) { u16 lctl = iwl_pciexp_link_ctrl(bus); return !(lctl & PCI_CFG_LINK_CTRL_VAL_L0S_EN); } static void iwl_pci_apm_config(struct iwl_bus *bus) { /* * HW bug W/A for instability in PCIe bus L0S->L1 transition. * Check if BIOS (or OS) enabled L1-ASPM on this device. * If so (likely), disable L0S, so device moves directly L0->L1; * costs negligible amount of power savings. * If not (unlikely), enable L0S, so there is at least some * power savings, even without L1. */ u16 lctl = iwl_pciexp_link_ctrl(bus); if ((lctl & PCI_CFG_LINK_CTRL_VAL_L1_EN) == PCI_CFG_LINK_CTRL_VAL_L1_EN) { /* L1-ASPM enabled; disable(!) L0S */ iwl_set_bit(bus->priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); IWL_DEBUG_POWER(bus->priv, "L1 Enabled; Disabling L0S\n"); } else { /* L1-ASPM disabled; enable(!) L0S */ iwl_clear_bit(bus->priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); IWL_DEBUG_POWER(bus->priv, "L1 Disabled; Enabling L0S\n"); } } static void iwl_pci_set_drv_data(struct iwl_bus *bus, void *drv_priv) { pci_set_drvdata(IWL_BUS_GET_PCI_DEV(bus), drv_priv); } static struct device *iwl_pci_get_dev(const struct iwl_bus *bus) { return &(IWL_BUS_GET_PCI_DEV(bus)->dev); } static unsigned int iwl_pci_get_irq(const struct iwl_bus *bus) { return IWL_BUS_GET_PCI_DEV(bus)->irq; } static void iwl_pci_get_hw_id(struct iwl_bus *bus, char buf[], int buf_len) { struct pci_dev *pci_dev = IWL_BUS_GET_PCI_DEV(bus); snprintf(buf, buf_len, "PCI ID: 0x%04X:0x%04X", pci_dev->device, pci_dev->subsystem_device); } static void iwl_pci_write8(struct iwl_bus *bus, u32 ofs, u8 val) { iowrite8(val, IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs); } static void iwl_pci_write32(struct iwl_bus *bus, u32 ofs, u32 val) { iowrite32(val, IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs); } static u32 iwl_pci_read32(struct iwl_bus *bus, u32 ofs) { u32 val = ioread32(IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs); return val; } static struct iwl_bus_ops pci_ops = { .get_pm_support = iwl_pci_is_pm_supported, .apm_config = iwl_pci_apm_config, .set_drv_data = iwl_pci_set_drv_data, .get_dev = iwl_pci_get_dev, .get_irq = iwl_pci_get_irq, .get_hw_id = iwl_pci_get_hw_id, .write8 = iwl_pci_write8, .write32 = iwl_pci_write32, .read32 = iwl_pci_read32, }; #define IWL_PCI_DEVICE(dev, subdev, cfg) \ .vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \ .subvendor = PCI_ANY_ID, .subdevice = (subdev), \ .driver_data = (kernel_ulong_t)&(cfg) /* Hardware specific file defines the PCI IDs table for that hardware module */ static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = { {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */ /* 5300 Series WiFi */ {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */ /* 5350 Series WiFi/WiMax */ {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */ /* 5150 Series Wifi/WiMax */ {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */ {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */ {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */ /* 6x00 Series */ {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)}, {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)}, {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)}, {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)}, {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)}, {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)}, {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)}, {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)}, {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)}, {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)}, /* 6x05 Series */ {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)}, {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)}, {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)}, {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)}, {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)}, {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)}, {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)}, /* 6x30 Series */ {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)}, {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)}, {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)}, {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)}, {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)}, {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)}, {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)}, {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)}, {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)}, {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)}, {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)}, {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)}, {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)}, /* 6x50 WiFi/WiMax Series */ {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)}, {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)}, {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)}, {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)}, {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)}, {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)}, /* 6150 WiFi/WiMax Series */ {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)}, {IWL_PCI_DEVICE(0x0885, 0x1307, iwl6150_bg_cfg)}, {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)}, {IWL_PCI_DEVICE(0x0885, 0x1327, iwl6150_bg_cfg)}, {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)}, {IWL_PCI_DEVICE(0x0886, 0x1317, iwl6150_bg_cfg)}, /* 1000 Series WiFi */ {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)}, {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)}, {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)}, {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)}, {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)}, {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)}, {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)}, {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)}, {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)}, {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)}, {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)}, {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)}, /* 100 Series WiFi */ {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)}, {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)}, {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)}, {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)}, {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)}, {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)}, /* 130 Series WiFi */ {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)}, {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)}, {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)}, {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)}, {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)}, {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)}, /* 2x00 Series */ {IWL_PCI_DEVICE(0x0890, 0x4022, iwl2000_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0891, 0x4222, iwl2000_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0890, 0x4422, iwl2000_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0890, 0x4026, iwl2000_2bg_cfg)}, {IWL_PCI_DEVICE(0x0891, 0x4226, iwl2000_2bg_cfg)}, {IWL_PCI_DEVICE(0x0890, 0x4426, iwl2000_2bg_cfg)}, /* 2x30 Series */ {IWL_PCI_DEVICE(0x0887, 0x4062, iwl2030_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0888, 0x4262, iwl2030_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0887, 0x4462, iwl2030_2bgn_cfg)}, {IWL_PCI_DEVICE(0x0887, 0x4066, iwl2030_2bg_cfg)}, {IWL_PCI_DEVICE(0x0888, 0x4266, iwl2030_2bg_cfg)}, {IWL_PCI_DEVICE(0x0887, 0x4466, iwl2030_2bg_cfg)}, /* 6x35 Series */ {IWL_PCI_DEVICE(0x088E, 0x4060, iwl6035_2agn_cfg)}, {IWL_PCI_DEVICE(0x088F, 0x4260, iwl6035_2agn_cfg)}, {IWL_PCI_DEVICE(0x088E, 0x4460, iwl6035_2agn_cfg)}, {IWL_PCI_DEVICE(0x088E, 0x4064, iwl6035_2abg_cfg)}, {IWL_PCI_DEVICE(0x088F, 0x4264, iwl6035_2abg_cfg)}, {IWL_PCI_DEVICE(0x088E, 0x4464, iwl6035_2abg_cfg)}, {IWL_PCI_DEVICE(0x088E, 0x4066, iwl6035_2bg_cfg)}, {IWL_PCI_DEVICE(0x088F, 0x4266, iwl6035_2bg_cfg)}, {IWL_PCI_DEVICE(0x088E, 0x4466, iwl6035_2bg_cfg)}, /* 105 Series */ {IWL_PCI_DEVICE(0x0894, 0x0022, iwl105_bgn_cfg)}, {IWL_PCI_DEVICE(0x0895, 0x0222, iwl105_bgn_cfg)}, {IWL_PCI_DEVICE(0x0894, 0x0422, iwl105_bgn_cfg)}, {IWL_PCI_DEVICE(0x0894, 0x0026, iwl105_bg_cfg)}, {IWL_PCI_DEVICE(0x0895, 0x0226, iwl105_bg_cfg)}, {IWL_PCI_DEVICE(0x0894, 0x0426, iwl105_bg_cfg)}, /* 135 Series */ {IWL_PCI_DEVICE(0x0892, 0x0062, iwl135_bgn_cfg)}, {IWL_PCI_DEVICE(0x0893, 0x0262, iwl135_bgn_cfg)}, {IWL_PCI_DEVICE(0x0892, 0x0462, iwl135_bgn_cfg)}, {IWL_PCI_DEVICE(0x0892, 0x0066, iwl135_bg_cfg)}, {IWL_PCI_DEVICE(0x0893, 0x0266, iwl135_bg_cfg)}, {IWL_PCI_DEVICE(0x0892, 0x0466, iwl135_bg_cfg)}, {0} }; MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids); static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data); struct iwl_pci_bus *bus; u16 pci_cmd; int err; bus = kzalloc(sizeof(*bus), GFP_KERNEL); if (!bus) { pr_err("Couldn't allocate iwl_pci_bus"); err = -ENOMEM; goto out_no_pci; } bus->pci_dev = pdev; /* W/A - seems to solve weird behavior. We need to remove this if we * don't want to stay in L1 all the time. This wastes a lot of power */ pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); if (pci_enable_device(pdev)) { err = -ENODEV; goto out_no_pci; } pci_set_master(pdev); err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36)); if (!err) err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36)); if (err) { err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (!err) err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); /* both attempts failed: */ if (err) { pr_err("No suitable DMA available.\n"); goto out_pci_disable_device; } } err = pci_request_regions(pdev, DRV_NAME); if (err) { pr_err("pci_request_regions failed"); goto out_pci_disable_device; } bus->hw_base = pci_iomap(pdev, 0, 0); if (!bus->hw_base) { pr_err("pci_iomap failed"); err = -ENODEV; goto out_pci_release_regions; } pr_info("pci_resource_len = 0x%08llx\n", (unsigned long long) pci_resource_len(pdev, 0)); pr_info("pci_resource_base = %p\n", bus->hw_base); pr_info("HW Revision ID = 0x%X\n", pdev->revision); /* We disable the RETRY_TIMEOUT register (0x41) to keep * PCI Tx retries from interfering with C3 CPU state */ pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); err = pci_enable_msi(pdev); if (err) { pr_err("pci_enable_msi failed"); goto out_iounmap; } /* TODO: Move this away, not needed if not MSI */ /* enable rfkill interrupt: hw bug w/a */ pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd); if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; pci_write_config_word(pdev, PCI_COMMAND, pci_cmd); } err = iwl_probe((void *) bus, &pci_ops, cfg); if (err) goto out_disable_msi; return 0; out_disable_msi: pci_disable_msi(pdev); out_iounmap: pci_iounmap(pdev, bus->hw_base); out_pci_release_regions: pci_set_drvdata(pdev, NULL); pci_release_regions(pdev); out_pci_disable_device: pci_disable_device(pdev); out_no_pci: kfree(bus); return err; } static void iwl_pci_down(void *bus) { struct iwl_pci_bus *pci_bus = (struct iwl_pci_bus *) bus; pci_disable_msi(pci_bus->pci_dev); pci_iounmap(pci_bus->pci_dev, pci_bus->hw_base); pci_release_regions(pci_bus->pci_dev); pci_disable_device(pci_bus->pci_dev); pci_set_drvdata(pci_bus->pci_dev, NULL); kfree(pci_bus); } static void __devexit iwl_pci_remove(struct pci_dev *pdev) { struct iwl_priv *priv = pci_get_drvdata(pdev); void *bus_specific = priv->bus.bus_specific; iwl_remove(priv); iwl_pci_down(bus_specific); } #ifdef CONFIG_PM static int iwl_pci_suspend(struct device *device) { struct pci_dev *pdev = to_pci_dev(device); struct iwl_priv *priv = pci_get_drvdata(pdev); return iwl_suspend(priv); } static int iwl_pci_resume(struct device *device) { struct pci_dev *pdev = to_pci_dev(device); struct iwl_priv *priv = pci_get_drvdata(pdev); /* * We disable the RETRY_TIMEOUT register (0x41) to keep * PCI Tx retries from interfering with C3 CPU state. */ pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); return iwl_resume(priv); } static SIMPLE_DEV_PM_OPS(iwl_dev_pm_ops, iwl_pci_suspend, iwl_pci_resume); #define IWL_PM_OPS (&iwl_dev_pm_ops) #else #define IWL_PM_OPS NULL #endif static struct pci_driver iwl_pci_driver = { .name = DRV_NAME, .id_table = iwl_hw_card_ids, .probe = iwl_pci_probe, .remove = __devexit_p(iwl_pci_remove), .driver.pm = IWL_PM_OPS, }; int __must_check iwl_pci_register_driver(void) { int ret; ret = pci_register_driver(&iwl_pci_driver); if (ret) pr_err("Unable to initialize PCI module\n"); return ret; } void iwl_pci_unregister_driver(void) { pci_unregister_driver(&iwl_pci_driver); }