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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 PCI_DEVICE_ID_CDNS_MACB 0xe007
23
24#define GEM_PCLK_RATE 50000000
25#define GEM_HCLK_RATE 50000000
26
27static int macb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
28{
29 int err;
30 struct platform_device *plat_dev;
31 struct platform_device_info plat_info;
32 struct macb_platform_data plat_data;
33 struct resource res[2];
34
35 /* enable pci device */
36 err = pcim_enable_device(pdev);
37 if (err < 0) {
38 dev_err(&pdev->dev, "Enabling PCI device has failed: %d", err);
39 return err;
40 }
41
42 pci_set_master(pdev);
43
44 /* set up resources */
45 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
46 res[0].start = pci_resource_start(pdev, 0);
47 res[0].end = pci_resource_end(pdev, 0);
48 res[0].name = PCI_DRIVER_NAME;
49 res[0].flags = IORESOURCE_MEM;
50 res[1].start = pci_irq_vector(pdev, 0);
51 res[1].name = PCI_DRIVER_NAME;
52 res[1].flags = IORESOURCE_IRQ;
53
54 dev_info(&pdev->dev, "EMAC physical base addr: %pa\n",
55 &res[0].start);
56
57 /* set up macb platform data */
58 memset(&plat_data, 0, sizeof(plat_data));
59
60 /* initialize clocks */
61 plat_data.pclk = clk_register_fixed_rate(&pdev->dev, "pclk", NULL, 0,
62 GEM_PCLK_RATE);
63 if (IS_ERR(plat_data.pclk)) {
64 err = PTR_ERR(plat_data.pclk);
65 goto err_pclk_register;
66 }
67
68 plat_data.hclk = clk_register_fixed_rate(&pdev->dev, "hclk", NULL, 0,
69 GEM_HCLK_RATE);
70 if (IS_ERR(plat_data.hclk)) {
71 err = PTR_ERR(plat_data.hclk);
72 goto err_hclk_register;
73 }
74
75 /* set up platform device info */
76 memset(&plat_info, 0, sizeof(plat_info));
77 plat_info.parent = &pdev->dev;
78 plat_info.fwnode = pdev->dev.fwnode;
79 plat_info.name = PLAT_DRIVER_NAME;
80 plat_info.id = pdev->devfn;
81 plat_info.res = res;
82 plat_info.num_res = ARRAY_SIZE(res);
83 plat_info.data = &plat_data;
84 plat_info.size_data = sizeof(plat_data);
85 plat_info.dma_mask = pdev->dma_mask;
86
87 /* register platform device */
88 plat_dev = platform_device_register_full(&plat_info);
89 if (IS_ERR(plat_dev)) {
90 err = PTR_ERR(plat_dev);
91 goto err_plat_dev_register;
92 }
93
94 pci_set_drvdata(pdev, plat_dev);
95
96 return 0;
97
98err_plat_dev_register:
99 clk_unregister(plat_data.hclk);
100
101err_hclk_register:
102 clk_unregister(plat_data.pclk);
103
104err_pclk_register:
105 return err;
106}
107
108static void macb_remove(struct pci_dev *pdev)
109{
110 struct platform_device *plat_dev = pci_get_drvdata(pdev);
111 struct macb_platform_data *plat_data = dev_get_platdata(&plat_dev->dev);
112
113 clk_unregister(plat_data->pclk);
114 clk_unregister(plat_data->hclk);
115 platform_device_unregister(plat_dev);
116}
117
118static const struct pci_device_id dev_id_table[] = {
119 { PCI_VDEVICE(CDNS, PCI_DEVICE_ID_CDNS_MACB) },
120 { 0, }
121};
122
123static struct pci_driver macb_pci_driver = {
124 .name = PCI_DRIVER_NAME,
125 .id_table = dev_id_table,
126 .probe = macb_probe,
127 .remove = macb_remove,
128};
129
130module_pci_driver(macb_pci_driver);
131MODULE_DEVICE_TABLE(pci, dev_id_table);
132MODULE_LICENSE("GPL");
133MODULE_DESCRIPTION("Cadence NIC PCI wrapper");
1// SPDX-License-Identifier: GPL-2.0-only
2/**
3 * Cadence GEM PCI wrapper.
4 *
5 * Copyright (C) 2016 Cadence Design Systems - http://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_data/macb.h>
17#include <linux/platform_device.h>
18#include "macb.h"
19
20#define PCI_DRIVER_NAME "macb_pci"
21#define PLAT_DRIVER_NAME "macb"
22
23#define CDNS_VENDOR_ID 0x17cd
24#define CDNS_DEVICE_ID 0xe007
25
26#define GEM_PCLK_RATE 50000000
27#define GEM_HCLK_RATE 50000000
28
29static int macb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
30{
31 int err;
32 struct platform_device *plat_dev;
33 struct platform_device_info plat_info;
34 struct macb_platform_data plat_data;
35 struct resource res[2];
36
37 /* enable pci device */
38 err = pcim_enable_device(pdev);
39 if (err < 0) {
40 dev_err(&pdev->dev, "Enabling PCI device has failed: %d", err);
41 return err;
42 }
43
44 pci_set_master(pdev);
45
46 /* set up resources */
47 memset(res, 0x00, sizeof(struct resource) * ARRAY_SIZE(res));
48 res[0].start = pci_resource_start(pdev, 0);
49 res[0].end = pci_resource_end(pdev, 0);
50 res[0].name = PCI_DRIVER_NAME;
51 res[0].flags = IORESOURCE_MEM;
52 res[1].start = pci_irq_vector(pdev, 0);
53 res[1].name = PCI_DRIVER_NAME;
54 res[1].flags = IORESOURCE_IRQ;
55
56 dev_info(&pdev->dev, "EMAC physical base addr: %pa\n",
57 &res[0].start);
58
59 /* set up macb platform data */
60 memset(&plat_data, 0, sizeof(plat_data));
61
62 /* initialize clocks */
63 plat_data.pclk = clk_register_fixed_rate(&pdev->dev, "pclk", NULL, 0,
64 GEM_PCLK_RATE);
65 if (IS_ERR(plat_data.pclk)) {
66 err = PTR_ERR(plat_data.pclk);
67 goto err_pclk_register;
68 }
69
70 plat_data.hclk = clk_register_fixed_rate(&pdev->dev, "hclk", NULL, 0,
71 GEM_HCLK_RATE);
72 if (IS_ERR(plat_data.hclk)) {
73 err = PTR_ERR(plat_data.hclk);
74 goto err_hclk_register;
75 }
76
77 /* set up platform device info */
78 memset(&plat_info, 0, sizeof(plat_info));
79 plat_info.parent = &pdev->dev;
80 plat_info.fwnode = pdev->dev.fwnode;
81 plat_info.name = PLAT_DRIVER_NAME;
82 plat_info.id = pdev->devfn;
83 plat_info.res = res;
84 plat_info.num_res = ARRAY_SIZE(res);
85 plat_info.data = &plat_data;
86 plat_info.size_data = sizeof(plat_data);
87 plat_info.dma_mask = pdev->dma_mask;
88
89 /* register platform device */
90 plat_dev = platform_device_register_full(&plat_info);
91 if (IS_ERR(plat_dev)) {
92 err = PTR_ERR(plat_dev);
93 goto err_plat_dev_register;
94 }
95
96 pci_set_drvdata(pdev, plat_dev);
97
98 return 0;
99
100err_plat_dev_register:
101 clk_unregister(plat_data.hclk);
102
103err_hclk_register:
104 clk_unregister(plat_data.pclk);
105
106err_pclk_register:
107 return err;
108}
109
110static void macb_remove(struct pci_dev *pdev)
111{
112 struct platform_device *plat_dev = pci_get_drvdata(pdev);
113 struct macb_platform_data *plat_data = dev_get_platdata(&plat_dev->dev);
114
115 platform_device_unregister(plat_dev);
116 clk_unregister(plat_data->pclk);
117 clk_unregister(plat_data->hclk);
118}
119
120static const struct pci_device_id dev_id_table[] = {
121 { PCI_DEVICE(CDNS_VENDOR_ID, CDNS_DEVICE_ID), },
122 { 0, }
123};
124
125static struct pci_driver macb_pci_driver = {
126 .name = PCI_DRIVER_NAME,
127 .id_table = dev_id_table,
128 .probe = macb_probe,
129 .remove = macb_remove,
130};
131
132module_pci_driver(macb_pci_driver);
133MODULE_DEVICE_TABLE(pci, dev_id_table);
134MODULE_LICENSE("GPL");
135MODULE_DESCRIPTION("Cadence NIC PCI wrapper");