Loading...
1/**
2 * Cadence GEM PCI wrapper.
3 *
4 * Copyright (C) 2016 Cadence Design Systems - http://www.cadence.com
5 *
6 * Authors: Rafal Ozieblo <rafalo@cadence.com>
7 * Bartosz Folta <bfolta@cadence.com>
8 *
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 of
11 * the License as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include <linux/clk.h>
23#include <linux/clk-provider.h>
24#include <linux/etherdevice.h>
25#include <linux/module.h>
26#include <linux/pci.h>
27#include <linux/platform_data/macb.h>
28#include <linux/platform_device.h>
29#include "macb.h"
30
31#define PCI_DRIVER_NAME "macb_pci"
32#define PLAT_DRIVER_NAME "macb"
33
34#define CDNS_VENDOR_ID 0x17cd
35#define CDNS_DEVICE_ID 0xe007
36
37#define GEM_PCLK_RATE 50000000
38#define GEM_HCLK_RATE 50000000
39
40static int macb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
41{
42 int err;
43 struct platform_device *plat_dev;
44 struct platform_device_info plat_info;
45 struct macb_platform_data plat_data;
46 struct resource res[2];
47
48 /* enable pci device */
49 err = pcim_enable_device(pdev);
50 if (err < 0) {
51 dev_err(&pdev->dev, "Enabling PCI device has failed: %d", err);
52 return err;
53 }
54
55 pci_set_master(pdev);
56
57 /* set up resources */
58 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
59 res[0].start = pci_resource_start(pdev, 0);
60 res[0].end = pci_resource_end(pdev, 0);
61 res[0].name = PCI_DRIVER_NAME;
62 res[0].flags = IORESOURCE_MEM;
63 res[1].start = pci_irq_vector(pdev, 0);
64 res[1].name = PCI_DRIVER_NAME;
65 res[1].flags = IORESOURCE_IRQ;
66
67 dev_info(&pdev->dev, "EMAC physical base addr: %pa\n",
68 &res[0].start);
69
70 /* set up macb platform data */
71 memset(&plat_data, 0, sizeof(plat_data));
72
73 /* initialize clocks */
74 plat_data.pclk = clk_register_fixed_rate(&pdev->dev, "pclk", NULL, 0,
75 GEM_PCLK_RATE);
76 if (IS_ERR(plat_data.pclk)) {
77 err = PTR_ERR(plat_data.pclk);
78 goto err_pclk_register;
79 }
80
81 plat_data.hclk = clk_register_fixed_rate(&pdev->dev, "hclk", NULL, 0,
82 GEM_HCLK_RATE);
83 if (IS_ERR(plat_data.hclk)) {
84 err = PTR_ERR(plat_data.hclk);
85 goto err_hclk_register;
86 }
87
88 /* set up platform device info */
89 memset(&plat_info, 0, sizeof(plat_info));
90 plat_info.parent = &pdev->dev;
91 plat_info.fwnode = pdev->dev.fwnode;
92 plat_info.name = PLAT_DRIVER_NAME;
93 plat_info.id = pdev->devfn;
94 plat_info.res = res;
95 plat_info.num_res = ARRAY_SIZE(res);
96 plat_info.data = &plat_data;
97 plat_info.size_data = sizeof(plat_data);
98 plat_info.dma_mask = pdev->dma_mask;
99
100 /* register platform device */
101 plat_dev = platform_device_register_full(&plat_info);
102 if (IS_ERR(plat_dev)) {
103 err = PTR_ERR(plat_dev);
104 goto err_plat_dev_register;
105 }
106
107 pci_set_drvdata(pdev, plat_dev);
108
109 return 0;
110
111err_plat_dev_register:
112 clk_unregister(plat_data.hclk);
113
114err_hclk_register:
115 clk_unregister(plat_data.pclk);
116
117err_pclk_register:
118 return err;
119}
120
121static void macb_remove(struct pci_dev *pdev)
122{
123 struct platform_device *plat_dev = pci_get_drvdata(pdev);
124 struct macb_platform_data *plat_data = dev_get_platdata(&plat_dev->dev);
125
126 platform_device_unregister(plat_dev);
127 clk_unregister(plat_data->pclk);
128 clk_unregister(plat_data->hclk);
129}
130
131static struct pci_device_id dev_id_table[] = {
132 { PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), },
133 { 0, }
134};
135
136static struct pci_driver macb_pci_driver = {
137 .name = PCI_DRIVER_NAME,
138 .id_table = dev_id_table,
139 .probe = macb_probe,
140 .remove = macb_remove,
141};
142
143module_pci_driver(macb_pci_driver);
144MODULE_DEVICE_TABLE(pci, dev_id_table);
145MODULE_LICENSE("GPL");
146MODULE_DESCRIPTION("Cadence NIC PCI wrapper");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * DOC: Cadence GEM PCI wrapper.
4 *
5 * Copyright (C) 2016 Cadence Design Systems - https://www.cadence.com
6 *
7 * Authors: Rafal Ozieblo <rafalo@cadence.com>
8 * Bartosz Folta <bfolta@cadence.com>
9 */
10
11#include <linux/clk.h>
12#include <linux/clk-provider.h>
13#include <linux/etherdevice.h>
14#include <linux/module.h>
15#include <linux/pci.h>
16#include <linux/platform_device.h>
17#include "macb.h"
18
19#define PCI_DRIVER_NAME "macb_pci"
20#define PLAT_DRIVER_NAME "macb"
21
22#define CDNS_VENDOR_ID 0x17cd
23#define CDNS_DEVICE_ID 0xe007
24
25#define GEM_PCLK_RATE 50000000
26#define GEM_HCLK_RATE 50000000
27
28static int macb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
29{
30 int err;
31 struct platform_device *plat_dev;
32 struct platform_device_info plat_info;
33 struct macb_platform_data plat_data;
34 struct resource res[2];
35
36 /* enable pci device */
37 err = pcim_enable_device(pdev);
38 if (err < 0) {
39 dev_err(&pdev->dev, "Enabling PCI device has failed: %d", err);
40 return err;
41 }
42
43 pci_set_master(pdev);
44
45 /* set up resources */
46 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
47 res[0].start = pci_resource_start(pdev, 0);
48 res[0].end = pci_resource_end(pdev, 0);
49 res[0].name = PCI_DRIVER_NAME;
50 res[0].flags = IORESOURCE_MEM;
51 res[1].start = pci_irq_vector(pdev, 0);
52 res[1].name = PCI_DRIVER_NAME;
53 res[1].flags = IORESOURCE_IRQ;
54
55 dev_info(&pdev->dev, "EMAC physical base addr: %pa\n",
56 &res[0].start);
57
58 /* set up macb platform data */
59 memset(&plat_data, 0, sizeof(plat_data));
60
61 /* initialize clocks */
62 plat_data.pclk = clk_register_fixed_rate(&pdev->dev, "pclk", NULL, 0,
63 GEM_PCLK_RATE);
64 if (IS_ERR(plat_data.pclk)) {
65 err = PTR_ERR(plat_data.pclk);
66 goto err_pclk_register;
67 }
68
69 plat_data.hclk = clk_register_fixed_rate(&pdev->dev, "hclk", NULL, 0,
70 GEM_HCLK_RATE);
71 if (IS_ERR(plat_data.hclk)) {
72 err = PTR_ERR(plat_data.hclk);
73 goto err_hclk_register;
74 }
75
76 /* set up platform device info */
77 memset(&plat_info, 0, sizeof(plat_info));
78 plat_info.parent = &pdev->dev;
79 plat_info.fwnode = pdev->dev.fwnode;
80 plat_info.name = PLAT_DRIVER_NAME;
81 plat_info.id = pdev->devfn;
82 plat_info.res = res;
83 plat_info.num_res = ARRAY_SIZE(res);
84 plat_info.data = &plat_data;
85 plat_info.size_data = sizeof(plat_data);
86 plat_info.dma_mask = pdev->dma_mask;
87
88 /* register platform device */
89 plat_dev = platform_device_register_full(&plat_info);
90 if (IS_ERR(plat_dev)) {
91 err = PTR_ERR(plat_dev);
92 goto err_plat_dev_register;
93 }
94
95 pci_set_drvdata(pdev, plat_dev);
96
97 return 0;
98
99err_plat_dev_register:
100 clk_unregister(plat_data.hclk);
101
102err_hclk_register:
103 clk_unregister(plat_data.pclk);
104
105err_pclk_register:
106 return err;
107}
108
109static void macb_remove(struct pci_dev *pdev)
110{
111 struct platform_device *plat_dev = pci_get_drvdata(pdev);
112 struct macb_platform_data *plat_data = dev_get_platdata(&plat_dev->dev);
113
114 clk_unregister(plat_data->pclk);
115 clk_unregister(plat_data->hclk);
116 platform_device_unregister(plat_dev);
117}
118
119static const struct pci_device_id dev_id_table[] = {
120 { PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), },
121 { 0, }
122};
123
124static struct pci_driver macb_pci_driver = {
125 .name = PCI_DRIVER_NAME,
126 .id_table = dev_id_table,
127 .probe = macb_probe,
128 .remove = macb_remove,
129};
130
131module_pci_driver(macb_pci_driver);
132MODULE_DEVICE_TABLE(pci, dev_id_table);
133MODULE_LICENSE("GPL");
134MODULE_DESCRIPTION("Cadence NIC PCI wrapper");