iwl-pci.c 20.1 KB
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/******************************************************************************
 *
 * 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 <ilw@linux.intel.com>
 * 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 <linux/pci.h>
#include <linux/pci-aspm.h>

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#include "iwl-bus.h"
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#include "iwl-shared.h"
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#include "iwl-agn.h"
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#include "iwl-trans.h"
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/* TODO: iwl_set_bit and friends should be implemented in bus layer
 * this would allow us not to include iwl-io.h here */
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#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
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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)

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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);

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	pos = pci_pcie_cap(pci_dev);
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	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 */
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		iwl_set_bit(bus, CSR_GIO_REG,
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				CSR_GIO_REG_VAL_L0S_ENABLED);
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		dev_printk(KERN_INFO, bus->dev, "L1 Enabled; Disabling L0S\n");
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	} else {
		/* L1-ASPM disabled; enable(!) L0S */
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		iwl_clear_bit(bus, CSR_GIO_REG,
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				CSR_GIO_REG_VAL_L0S_ENABLED);
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		dev_printk(KERN_INFO, bus->dev, "L1 Disabled; Enabling L0S\n");
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	}
}

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static void iwl_pci_set_drv_data(struct iwl_bus *bus, struct iwl_shared *shrd)
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{
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	bus->shrd = shrd;
	pci_set_drvdata(IWL_BUS_GET_PCI_DEV(bus), shrd);
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}

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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);
}

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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;
}

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static const struct iwl_bus_ops bus_ops_pci = {
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	.get_pm_support = iwl_pci_is_pm_supported,
	.apm_config = iwl_pci_apm_config,
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	.set_drv_data = iwl_pci_set_drv_data,
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	.get_hw_id = iwl_pci_get_hw_id,
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	.write8 = iwl_pci_write8,
	.write32 = iwl_pci_write32,
	.read32 = iwl_pci_read32,
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};

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#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)},
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	{IWL_PCI_DEVICE(0x0082, 0xC020, iwl6005_2agn_sff_cfg)},
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/* 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);
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	struct iwl_bus *bus;
	struct iwl_pci_bus *pci_bus;
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	u16 pci_cmd;
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	int err;

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	bus = kzalloc(sizeof(*bus) + sizeof(*pci_bus), GFP_KERNEL);
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	if (!bus) {
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		dev_printk(KERN_ERR, &pdev->dev,
			   "Couldn't allocate iwl_pci_bus");
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		err = -ENOMEM;
		goto out_no_pci;
	}

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	pci_bus = IWL_BUS_GET_PCI_BUS(bus);
	pci_bus->pci_dev = pdev;
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	/* 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) {
417 418
			dev_printk(KERN_ERR, bus->dev,
				   "No suitable DMA available.\n");
419 420 421 422 423 424
			goto out_pci_disable_device;
		}
	}

	err = pci_request_regions(pdev, DRV_NAME);
	if (err) {
425
		dev_printk(KERN_ERR, bus->dev, "pci_request_regions failed");
426 427 428
		goto out_pci_disable_device;
	}

429 430
	pci_bus->hw_base = pci_iomap(pdev, 0, 0);
	if (!pci_bus->hw_base) {
431
		dev_printk(KERN_ERR, bus->dev, "pci_iomap failed");
432 433 434 435
		err = -ENODEV;
		goto out_pci_release_regions;
	}

436 437
	dev_printk(KERN_INFO, &pdev->dev,
		"pci_resource_len = 0x%08llx\n",
438
		(unsigned long long) pci_resource_len(pdev, 0));
439 440
	dev_printk(KERN_INFO, &pdev->dev,
		"pci_resource_base = %p\n", pci_bus->hw_base);
441

442 443
	dev_printk(KERN_INFO, &pdev->dev,
		"HW Revision ID = 0x%X\n", pdev->revision);
444 445 446 447 448 449 450

	/* 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) {
451
		dev_printk(KERN_ERR, &pdev->dev, "pci_enable_msi failed");
452 453 454 455 456 457 458 459 460 461 462
		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);
	}

463 464
	bus->dev = &pdev->dev;
	bus->irq = pdev->irq;
465
	bus->ops = &bus_ops_pci;
466

467
	err = iwl_probe(bus, &trans_ops_pcie, cfg);
468
	if (err)
469
		goto out_disable_msi;
470 471
	return 0;

472 473 474
out_disable_msi:
	pci_disable_msi(pdev);
out_iounmap:
475
	pci_iounmap(pdev, pci_bus->hw_base);
476 477 478 479 480
out_pci_release_regions:
	pci_set_drvdata(pdev, NULL);
	pci_release_regions(pdev);
out_pci_disable_device:
	pci_disable_device(pdev);
481 482 483
out_no_pci:
	kfree(bus);
	return err;
484 485
}

486
static void iwl_pci_down(struct iwl_bus *bus)
487
{
488
	struct iwl_pci_bus *pci_bus = (struct iwl_pci_bus *) bus->bus_specific;
489 490 491 492 493 494 495

	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);

496
	kfree(bus);
497 498
}

499 500
static void __devexit iwl_pci_remove(struct pci_dev *pdev)
{
501 502
	struct iwl_shared *shrd = pci_get_drvdata(pdev);
	struct iwl_bus *bus = shrd->bus;
503

504
	iwl_remove(shrd->priv);
505

506
	iwl_pci_down(bus);
507 508 509 510 511 512 513
}

#ifdef CONFIG_PM

static int iwl_pci_suspend(struct device *device)
{
	struct pci_dev *pdev = to_pci_dev(device);
514
	struct iwl_shared *shrd = pci_get_drvdata(pdev);
515

516 517 518 519 520
	/* Before you put code here, think about WoWLAN. You cannot check here
	 * whether WoWLAN is enabled or not, and your code will run even if
	 * WoWLAN is enabled - don't kill the NIC, someone may need it in Sx.
	 */

521
	return iwl_trans_suspend(shrd->trans);
522 523 524 525 526
}

static int iwl_pci_resume(struct device *device)
{
	struct pci_dev *pdev = to_pci_dev(device);
527
	struct iwl_shared *shrd = pci_get_drvdata(pdev);
528

529 530 531 532 533
	/* Before you put code here, think about WoWLAN. You cannot check here
	 * whether WoWLAN is enabled or not, and your code will run even if
	 * WoWLAN is enabled - the NIC may be alive.
	 */

534 535 536 537 538 539
	/*
	 * 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);

540
	return iwl_trans_resume(shrd->trans);
541 542
}

J
Johannes Berg 已提交
543
static SIMPLE_DEV_PM_OPS(iwl_dev_pm_ops, iwl_pci_suspend, iwl_pci_resume);
544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574

#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);
}