1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
4 *
5 * Based on the r8180 driver, which is:
6 * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
7 *
8 * Contact Information: wlanfae <wlanfae@realtek.com>
9 */
10#include "rtl_pci.h"
11#include "rtl_core.h"
12
13static void _rtl92e_parse_pci_configuration(struct pci_dev *pdev,
14 struct net_device *dev)
15{
16 struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
17
18 u8 tmp;
19 u16 link_ctrl_reg;
20
21 pcie_capability_read_word(dev: priv->pdev, PCI_EXP_LNKCTL, val: &link_ctrl_reg);
22
23 pci_read_config_byte(dev: pdev, where: 0x98, val: &tmp);
24 tmp |= BIT(4);
25 pci_write_config_byte(dev: pdev, where: 0x98, val: tmp);
26
27 tmp = 0x17;
28 pci_write_config_byte(dev: pdev, where: 0x70f, val: tmp);
29}
30
31bool rtl92e_check_adapter(struct pci_dev *pdev, struct net_device *dev)
32{
33 struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
34 u16 device_id;
35 u8 revision_id;
36 u16 irq_line;
37
38 device_id = pdev->device;
39 revision_id = pdev->revision;
40 pci_read_config_word(dev: pdev, where: 0x3C, val: &irq_line);
41
42 priv->card_8192 = NIC_8192E;
43
44 if (device_id == 0x8192) {
45 switch (revision_id) {
46 case HAL_HW_PCI_REVISION_ID_8192PCIE:
47 dev_info(&pdev->dev,
48 "Adapter(8192 PCI-E) is found - DeviceID=%x\n",
49 device_id);
50 priv->card_8192 = NIC_8192E;
51 break;
52 case HAL_HW_PCI_REVISION_ID_8192SE:
53 dev_info(&pdev->dev,
54 "Adapter(8192SE) is found - DeviceID=%x\n",
55 device_id);
56 priv->card_8192 = NIC_8192SE;
57 break;
58 default:
59 dev_info(&pdev->dev,
60 "UNKNOWN nic type(%4x:%4x)\n",
61 pdev->vendor, pdev->device);
62 priv->card_8192 = NIC_UNKNOWN;
63 return false;
64 }
65 }
66
67 if (priv->card_8192 != NIC_8192E) {
68 dev_info(&pdev->dev,
69 "Detect info(%x) and hardware info(%x) not match!\n",
70 NIC_8192E, priv->card_8192);
71 dev_info(&pdev->dev,
72 "Please select proper driver before install!!!!\n");
73 return false;
74 }
75
76 _rtl92e_parse_pci_configuration(pdev, dev);
77
78 return true;
79}
80

source code of linux/drivers/staging/rtl8192e/rtl8192e/rtl_pci.c