1/******************************************************************************
2 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
3 *
4 * Based on the r8180 driver, which is:
5 * Copyright 2004-2005 Andrea Merello <andreamrl@tiscali.it>, et al.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
18 *
19 * The full GNU General Public License is included in this distribution in the
20 * file called LICENSE.
21 *
22 * Contact Information:
23 * wlanfae <wlanfae@realtek.com>
24 *****************************************************************************/
25#include "rtl_pci.h"
26#include "rtl_core.h"
27
28static void rtl8192_parse_pci_configuration(struct pci_dev *pdev,
29					    struct net_device *dev)
30{
31	struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
32
33	u8 tmp;
34	int pos;
35	u8 LinkCtrlReg;
36
37	pos = pci_find_capability(priv->pdev, PCI_CAP_ID_EXP);
38	pci_read_config_byte(priv->pdev, pos + PCI_EXP_LNKCTL, &LinkCtrlReg);
39	priv->NdisAdapter.LinkCtrlReg = LinkCtrlReg;
40
41	RT_TRACE(COMP_INIT, "Link Control Register =%x\n",
42		 priv->NdisAdapter.LinkCtrlReg);
43
44	pci_read_config_byte(pdev, 0x98, &tmp);
45	tmp |= BIT4;
46	pci_write_config_byte(pdev, 0x98, tmp);
47
48	tmp = 0x17;
49	pci_write_config_byte(pdev, 0x70f, tmp);
50}
51
52bool rtl8192_pci_findadapter(struct pci_dev *pdev, struct net_device *dev)
53{
54	struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
55	u16 VenderID;
56	u16 DeviceID;
57	u8  RevisionID;
58	u16 IrqLine;
59
60	VenderID = pdev->vendor;
61	DeviceID = pdev->device;
62	RevisionID = pdev->revision;
63	pci_read_config_word(pdev, 0x3C, &IrqLine);
64
65	priv->card_8192 = priv->ops->nic_type;
66
67	if (DeviceID == 0x8172) {
68		switch (RevisionID) {
69		case HAL_HW_PCI_REVISION_ID_8192PCIE:
70			printk(KERN_INFO "Adapter(8192 PCI-E) is found - "
71			       "DeviceID=%x\n", DeviceID);
72			priv->card_8192 = NIC_8192E;
73			break;
74		case HAL_HW_PCI_REVISION_ID_8192SE:
75			printk(KERN_INFO "Adapter(8192SE) is found - "
76			       "DeviceID=%x\n", DeviceID);
77			priv->card_8192 = NIC_8192SE;
78			break;
79		default:
80			printk(KERN_INFO "UNKNOWN nic type(%4x:%4x)\n",
81			       pdev->vendor, pdev->device);
82			priv->card_8192 = NIC_UNKNOWN;
83			return false;
84		}
85	}
86
87	if (priv->ops->nic_type != priv->card_8192) {
88		printk(KERN_INFO "Detect info(%x) and hardware info(%x) not match!\n",
89				priv->ops->nic_type, priv->card_8192);
90		printk(KERN_INFO "Please select proper driver before install!!!!\n");
91		return false;
92	}
93
94	rtl8192_parse_pci_configuration(pdev, dev);
95
96	return true;
97}
98